Data Package Metadata View Summary

The Extended Global Lake area, Climate, and Population Dataset (GLCP)

General Information

Data Package:

Local Identifier:

edi.394.7

Title:

The Extended Global Lake area, Climate, and Population Dataset (GLCP)

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

A changing climate and increasing human population necessitate understanding global freshwater availability and temporal variability. To examine lake freshwater availability from local-to-global and monthly-to-decadal scales, we created the Global Lake area, Climate, and Population (GLCP) dataset, which contains annual lake surface area for 1.42 million lakes with paired annual basin-level climate and population data. Building off an existing data product infrastructure, the next generation of the GLCP includes monthly lake ice area, snow basin area, and more climate variables including specific humidity, longwave and shortwave radiation, as well as cloud cover. The new generation of the GLCP continues previous FAIR data efforts by expanding its scripting repository and maintaining unique relational keys for merging with external data products. Compared to the original version, the new GLCP contains an even richer suite of variables capable of addressing disparate analyses of lake water trends at wide spatial and temporal scales.

Publication Date:

2024-02-21

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

1995

End:

2020

People and Organizations
Contact:	Meyer, Michael F (U.S. Geological Survey) [ email ]
Creator:	Meyer, Michael F (U.S. Geological Survey)
Creator:	Brousil, Matthew R (Colorado State University)
Creator:	Das, Pratyush K (Asian Institute of Technology)
Creator:	Virdis, Salvatore GP (Asian Institute of Technology)
Creator:	Yang, Xiao (Southern Methodist University)
Creator:	Cramer, Alli N (University of Washington)
Creator:	McClure, Ryan P (Carnegie Institutes for Science)
Creator:	Katz, Stephen L (Sharper Informatics Solutions)
Creator:	Hampton, Stephanie E (Carnegie Institution for Science)

Data Entities
Data Table Name:	Africa_glcp_extended
Description:	Extended GLCP lakes that are contained within the African continent, as defined in Hydrolakes.
Data Table Name:	Asia_glcp_extended
Description:	Extended GLCP lakes that are contained within the Asian continent, as defined in Hydrolakes.
Data Table Name:	Canada_1_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_2_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_3_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_4_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_5_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_6_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_7_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Canada_8_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Data Table Name:	Europe_glcp_extended
Description:	Extended GLCP lakes that are contained within the European continent, as defined in Hydrolakes.
Data Table Name:	North_America_wo_Canada_glcp_extended
Description:	Extended GLCP lakes that are contained within the North American continent, as defined in Hydrolakes. Lake within Canada are divided in separate CSVs.
Data Table Name:	Oceania_glcp_extended
Description:	Extended GLCP lakes that are contained within the Oceanic continent, as defined in Hydrolakes.
Data Table Name:	South_America_glcp_extended
Description:	Extended GLCP lakes that are contained within the South American continent, as defined in Hydrolakes.
Data Table Name:	hydrolakes_by_file
Description:	Combined unique Hylak_ids with corresponding file that contains data on those lakes.
Other Name:	gee_scripts
Description:	Compressed folder containing all Google Earth Engine scripts necessary for producing the extended GLCP dataset.
Other Name:	R_scripts
Description:	Compressed folder containing all R Scripts necessary to produce the extended GLCP dataset.
Other Name:	python_scripts
Description:	Compressed folder containing all python scripts and directions for setting up computational environment for snow aggregation.
Other Name:	README
Description:	README file explaining software and programmatic requirements for reproducing the GLCP.

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/e5469d83258b1df577055a434ef31408
Name:	Africa_glcp_extended
Description:	Extended GLCP lakes that are contained within the African continent, as defined in Hydrolakes.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Africa_glcp_extended.csv

Size:

2660 byte

Authentication:

1bfcc4f575b3e62962248cb92baf471d Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual seasonal lake surface area. Seasonal surface area is defined as the sum of pixels identified as water for at least one month within one calendar year but not for all observable months in a calendar year.

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Number of people living within a basin. Because fractional areas are considered when aggregating pixels within a basin, values for the number of people living within a basin can have floating decimals.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/6af66f8c6675cf72e785e7dec57014cf
Name:	Asia_glcp_extended
Description:	Extended GLCP lakes that are contained within the Asian continent, as defined in Hydrolakes.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Asia_glcp_extended.csv

Size:

2745 byte

Authentication:

ab6a6302f0f4c4e23da4659e218d93cd Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/4973e353caef9b6867305c3b20501730
Name:	Canada_1_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_1_glcp_extended.csv

Size:

3022 byte

Authentication:

6020fe1252c2f5ab4675d2f27c6b78d5 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/c5a83210e2ac7aa61c5bdc6260159763
Name:	Canada_2_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_2_glcp_extended.csv

Size:

3037 byte

Authentication:

5683f64470670be9bd7b5b9c54346317 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/0535450bbd01a1ed188d2014fc8300e9
Name:	Canada_3_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_3_glcp_extended.csv

Size:

3049 byte

Authentication:

0983cd7e4c988000c9ff7cef475b3d22 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/b1ccfe8badf4fd86792e4acfc1725c5c
Name:	Canada_4_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_4_glcp_extended.csv

Size:

3067 byte

Authentication:

aa976d672a74162a4d3743d1a6d01b25 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/6d44fc8664eb92a12ef667b919a9d9b3
Name:	Canada_5_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_5_glcp_extended.csv

Size:

3040 byte

Authentication:

4ca3660a01a4c9aa7fb5148be1524564 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/03bbd451421f4d8aad9c44dc2a12ea2f
Name:	Canada_6_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_6_glcp_extended.csv

Size:

3051 byte

Authentication:

0d7040f29af68af9eb57aa8ee99228b2 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/16b0ec4ede099ffaa018a76b10f45ac0
Name:	Canada_7_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_7_glcp_extended.csv

Size:

3052 byte

Authentication:

4b72401c3730ec1962a46403664564a5 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/51a8442789bd596e05ed41557806947f
Name:	Canada_8_glcp_extended
Description:	Subset of Canadian lakes for the extended GLCP.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Canada_8_glcp_extended.csv

Size:

3044 byte

Authentication:

b26e5bc4db9c70dfdbc21aeeb1c873d6 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/c312e822013a2cfac471a644d042d60c
Name:	Europe_glcp_extended
Description:	Extended GLCP lakes that are contained within the European continent, as defined in Hydrolakes.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Europe_glcp_extended.csv

Size:

2982 byte

Authentication:

c151e3004f2559f30f0ae533d530ae84 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/4e35b70710a2a7e715e7eda4acff570a
Name:	North_America_wo_Canada_glcp_extended
Description:	Extended GLCP lakes that are contained within the North American continent, as defined in Hydrolakes. Lake within Canada are divided in separate CSVs.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

North_America_wo_Canada_glcp_extended.csv

Size:

2685 byte

Authentication:

721904700c6f9558d4b565854552e3f9 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

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text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/88535b3bf98ef8a74eb54b6b3e3f2b38
Name:	Oceania_glcp_extended
Description:	Extended GLCP lakes that are contained within the Oceanic continent, as defined in Hydrolakes.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

Oceania_glcp_extended.csv

Size:

3033 byte

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Number of Header Lines:

Record Delimiter:

\r\n

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column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/b00b4d9ff8f11ab5a2eca67476910775
Name:	South_America_glcp_extended
Description:	Extended GLCP lakes that are contained within the South American continent, as defined in Hydrolakes.
Number of Records:	10
Number of Columns:	33

Table Structure

Object Name:

South_America_glcp_extended.csv

Size:

2643 byte

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Text Format:

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Record Delimiter:

\r\n

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column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area

Column Name:

HYBAS_ID

year

Hylak_id

month

seasonal_km2

permanent_km2

Country

Continent

Center_Lat

Center_Lon

mean_spec_humidity

mean_precip_mm

mean_temp_k

mean_totcloud_pct

mean_sw_wm2

mean_lw_wm2

monthly_water_area_km2

pop_sum

ice_cover_min

ice_cover_max

ice_cover_mean

ice_cover_median

ice_cover_binary_min

ice_cover_binary_max

ice_cover_binary_mean

ice_cover_binary_median

ice_cover_count

snow_min

snow_mean

snow_max

snow_valid_count

snow_invalid_count

snow_area_km2

Definition:

Unique basin identifier from Hydrobasins.

Year of observation

Unique lake identifier from Hydrolakes.

Numerical month of observation

Annual permanent lake surface area. Permanent surface area is defined as the sum of pixels identified as water for all observable months in a calendar year.

Country in which a lake is located, as defined by Hydrolakes.

Continent in which a lake is located, as defined by Hydrolakes.

Lake centroid latitude

Lake centroid longitude

Mean basin-level specific humidity, in grams of water per grams of air.

Mean basin-level precipitation, in millimeters.

Mean basin-level temperature, in Kelvin.

Mean basin-level cloud cover, expressed as a proportion of the lake’s basin.

Mean basin-level shortwave radiation, in Watts per square meter.

Mean basin-level longwave radiation, in Watts per square meter.

Surface area measurement for a given lake in a specific month-year combination, in square kilometers.

Minimum percentage of lake ice cover within a month.

Maximum percentage of lake ice cover within a month.

Mean percentage of lake ice cover within a month.

Median percentage of lake ice cover within a month.

Minimum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Maximum percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Mean percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Median percentage of lake ice cover within a month, where pixels with less than 15% cover are removed. This data clearing step is meant to eliminate potentially spurious pixels before aggregation.

Number of images within a month for estimating lake ice cover.

Minimum percentage of basin snow area cover.

Mean percentage of basin snow area cover.

Maximum percentage of basin snow area cover.

Number of valid snow observations in a month.

Number of invalid snow observations in a month.

Area of a basin covered with snow, based on the mean snow fractional snow area.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

text

Format	YYYY
Precision

Definition

text

Definition

text

Unit	kilometerSquared
Type	real

Unit	kilometerSquared
Type	real

Definition

text

Definition

text

Unit	degree
Type	real

Unit	degree
Type	real

Unit	gramPerGram
Type	real

Unit	millimeter
Type	real

Unit	kelvin
Type	real

Unit	dimensionless
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	wattPerMeterSquared
Type	real

Unit	kilometerSquared
Type	real

Unit	Persons
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of images
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	percent
Type	real

Unit	number of observations
Type	real

Unit	Number of observations
Type	real

Unit	kilometerSquared
Type	real

Missing Value Code:

Code	NA
Expl	Data missing for a specific lake, year, month combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for a specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data Missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-lake-year combination

Code	NA
Expl	Data missing for a specific month-lake-year combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for specific month-year-lake combination

Code	NA
Expl	Data missing for a given month-year-lake combination

Code	NA
Expl	Data missing for a particular month-lake-year combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for a particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Code	NA
Expl	Data missing for particular month-year-lake combination

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/394/7/b5beb1e0cd17537c42f0d794c6b013d1
Name:	hydrolakes_by_file
Description:	Combined unique Hylak_ids with corresponding file that contains data on those lakes.
Number of Records:	1422499
Number of Columns:	2

Table Structure

Object Name:

hydrolakes_by_file.csv

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Table Column Descriptions

Hylak_id

file

Column Name:

Hylak_id

file

Definition:

Unique lakes identifier from Hydrolakes.

Filenames contained within the extended data product

Storage Type:

string

Measurement Type:

nominal

Measurement Values Domain:

Definition

text

Definition

text

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Non-Categorized Data Resource

Name:

gee_scripts

Entity Type:

application/zip

Description:

Compressed folder containing all Google Earth Engine scripts necessary for producing the extended GLCP dataset.

Physical Structure Description:

Object Name:

gee_scripts.zip

Size:

100794 byte

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Data:

https://pasta-s.lternet.edu/package/data/eml/edi/394/7/3040c3433ab6ee0e71ca880bf530914f

Non-Categorized Data Resource

Name:

R_scripts

Entity Type:

application/zip

Description:

Compressed folder containing all R Scripts necessary to produce the extended GLCP dataset.

Physical Structure Description:

Object Name:

R_scripts.zip

Size:

26662 byte

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application/zip

Data:

https://pasta-s.lternet.edu/package/data/eml/edi/394/7/c0152d9a8a80a1f2955292632cbe9357

Non-Categorized Data Resource

Name:

python_scripts

Entity Type:

application/zip

Description:

Compressed folder containing all python scripts and directions for setting up computational environment for snow aggregation.

Physical Structure Description:

Object Name:

python_scripts.zip

Size:

736820 byte

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Format Name:

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Data:

https://pasta-s.lternet.edu/package/data/eml/edi/394/7/94560407281d19b2797246d60defaffc

Non-Categorized Data Resource

Name:

README

Entity Type:

application/pdf

Description:

README file explaining software and programmatic requirements for reproducing the GLCP.

Physical Structure Description:

Object Name:

README.pdf

Size:

134231 byte

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Format Name:

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Data:

https://pasta-s.lternet.edu/package/data/eml/edi/394/7/c47c7c7383225ab55ff591cb59c41e6b

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
(No thesaurus)	human population
LTER Controlled Vocabulary	lakes, remote sensing, climate, limnology

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

Step 1: Calculate lake-level annual seasonal, annual permanent, and monthly water area

Lake area estimates are derived by extracting seasonal and permanent water area from the JRC Global Surface water dataset (Pekel et al., 2016) located within 90 m of predefined HydroLAKES shapefiles (Messager et al., 2016). Permanent water is defined as water being present within a pixel for all months with valid observations, whereas seasonal water is defined as water that is present for at least one month but not all months with valid observations. Owing to increased temporal resolution of the JRC Global Surface Water dataset, we also extracted monthly area estimates within HydroLAKES shapefiles. Because water classification algorithms only identify liquid water, ice is not considered water, and therefore permanently frozen lakes are coded as having zero area, whereas seasonally frozen lakes will have seasonal surface areas that partly reflect external inputs and freeze-thaw cycles.

Description:

Step 2: Calculate lake-level fractional ice area cover

We estimated monthly lake ice coverage using MODIS daily snow cover produce and HydroLakes database. We used MODIS daily snow cover product (band name NDSI_Snow_Cover from MOD10A1.006, 500m spatial resolution) to estimate lake ice monthly status. Each daily snow cover image quantifies snow covered areal percentage into values from 0% to 100%, with values masked out for areas of missing data, low light condition, and cloud cover etc. For each day, daily snow cover images were used to estimate ice areal percent coverage for each lake using the following steps:

Daily snow cover image was first converted to a binary image of ice(1) and non-ice (0) using 15% as the threshold. Pixels with values ≥ 15% were assumed to be ice cover. The resulting binary ice image was then appended to the original snow cover fraction image as an additional band;

Lake ice fraction and missing data fraction were estimated by calculating fractional cover of ice pixels (or snow cover percentage pixels) and missing data pixels over the entire lake polygon region;

If the missing data fraction for a given day exceeded 20%, the observation was discarded from further aggregation;

Once we obtained the daily lake ice fractions (from both the binary ice image and the snow cover image) and removed the observations that contained substantial missing data (>20%) over the lake surface, we used month as the temporal unit to aggregate these values. To estimate monthly lake ice fraction for a given lake, we calculated minimum, maximum, mean, median, and observation count (i.e. no. of daily observations) for the month. All the metrics were carried out for both the daily mean snow cover value and the daily mean (binary) ice cover values.

When implementing the above steps in Google Earth Engine, we encountered memory limitation issues for some of the largest lakes, possibly due to the large spatial extent they cover. To resolve this, we reduced the resolution of the image for the lakes with surface area greater than 64 km2 before calculating the daily lake ice fractions. The resolution used in the calculation for the big lakes was implemented so that it scaled with the size of the lake surface.

Description:

Step 3: Calculate basin-level climate estimates

Expanding on the existing data available in the GLCP, additional climatological variables were obtained from the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) (CITE). Downloaded MERRA datasets were hourly aggregates with original spatial resolution of 0.5×0.625 decimal degrees. From these broader datasets, we extracted variables for Humidity (2-meter specific humidity kg kg-1, QV2M), Cloud Cover (cloud area fraction for total clouds "1", CLDTOT), Radiation (net longwave flux LWGN, net shortwave flux SWGNT), and Monthly Precipitation (total precipitation land, bias corrected in kg m−2 s−1, or volumetrically, mm s−1, PRECTOTCORRLAND) and Temperature (2-meter air temperature in K, T2MMEAN). These subsets were exported from NASA Goddard Earth Sciences (GES) and Data Information Services Center (DISC) in a netCDF format for local analysis.

Monthly climate values for each basin in the GLCP were calculated following the procedure outlined in Meyer et al (2020). Rather than aggregating the hourly data into annual values data were converted into monthly values by averaging or adding the values as appropriate. With the exception of the temporal window, the data aggregation workflow was the same as that found in Meyer et al (2020) and aggregated rasters were resampled at 1/10th cell size through a bilinear interpolation. Resampled rasters were then exported to Google Earth Engine to be spatially paired with basins and basin level climatological values were extracted.

Description:

Step 4: Calculate basin-level human population estimates

As with climate data, human population was summed within each lake’s basin for each year of the GPW. Rasters were downscaled with a bilinear interpolation, where final population rasters had a resolution of 0.05x0.05 decimal degrees. Resampled rasters were then exported to Google Earth Engine to be reduced to basin-level summations.

Description:

Step 5: Calculate basin-level snow area cover

Monthly average snow cover estimations have been extracted from the MODIS global Level-3 (L3) data set within 0.05° (approx. 5 km) Climate Modeling Grid (CMG) cells (Hall ad Riggs, 2021). MODIS dataset was firstly reclassified keeping only information about snow coverage ranging from 0 to 100%. Other unnecessary 8-bit coded information such as cloud, uncertain and water pixels were masked out.

Basins from HydroBasin dataset have been used as zonal extraction input features after being rasterized and snapped to the MODIS dataset. The selection of a 0.05° resolution ensured a zonal information spatially consistent with MODIS raster datasets. Furthermore, smaller basin than 25 km2 have been automatically filtered out. The zonal statistics have been finally implemented for all 12 level of HydroBasin dataset for a period of 18 years from 2002 to 2020.

Description:

Step 6: Merge lake- and basin-level data products

All resulting derived products were merged into a single CSV. Due to large file sizes, each continent is contained within its own CSV, with the exception of North America. For lakes in North America, lake in Canada were split into 8 separate CSV files, and all remaining lakes in North America are contained in a separate CSV.

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@edirepository.org

Web Address:

https://edirepository.org

Id:

https://ror.org/0330j0z60

Creators:

Individual:

Dr Michael F Meyer

Organization:

U.S. Geological Survey

Email Address:

mfmeyer@usgs.gov

Id:

https://orcid.org/0000-0002-8034-9434

Individual:

Mr. Matthew R Brousil

Organization:

Colorado State University

Email Address:

matthew.brousil@colostate.edu

Id:

https://orcid.org/0000-0001-8229-9445

Individual:

Pratyush K Das

Organization:

Asian Institute of Technology

Email Address:

dpratyush.k@gmail.com

Individual:

Dr. Salvatore GP Virdis

Organization:

Asian Institute of Technology

Email Address:

virdis@ait.ac.th

Id:

https://orcid.org/0000-0003-3927-9494

Individual:

Dr Xiao Yang

Organization:

Southern Methodist University

Email Address:

xnayang@smu.edu

Id:

https://orcid.org/0000-0002-0046-832X

Individual:

Dr Alli N Cramer

Organization:

University of Washington

Email Address:

ancramer@uw.edu

Id:

https://orcid.org/0000-0002-0356-5782

Individual:

Dr Ryan P McClure

Organization:

Carnegie Institutes for Science

Email Address:

rmcclure@carnegiescience.edu

Id:

https://orcid.org/0000-0001-6370-3852

Individual:

Dr Stephen L Katz

Organization:

Sharper Informatics Solutions

Email Address:

katz@powerindata.org

Individual:

Dr Stephanie E Hampton

Organization:

Carnegie Institution for Science

Email Address:

shampton@carnegiescience.edu

Id:

https://orcid.org/0000-0003-2389-4249

Contacts:

Individual:

Dr Michael F Meyer

Organization:

U.S. Geological Survey

Address:

1 Gifford Pinchot Drive,

Madison, Wisconsin 53726 USA

Email Address:

mfmeyer@usgs.gov

Web Address:

https://www.usgs.gov/staff-profiles/michael-f-meyer

Id:

https://orcid.org/0000-0002-8034-9434

Metadata Providers:

Individual:

Dr Michael F Meyer

Organization:

U.S. Geological Survey

Address:

1 Gifford Pinchot Drive,

Madison, Wisconsin 53726 USA

Email Address:

mfmeyer@usgs.gov

Web Address:

https://www.usgs.gov/staff-profiles/michael-f-meyer

Id:

https://orcid.org/0000-0002-8034-9434

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1995

End:

2020

Geographic Region:

Description:

Worldwide

Bounding Coordinates:

Northern:	78.0	Southern:	-78.0
Western:	-180.0	Eastern:	180.0

Project

Parent Project Information:

Title:

The Saline Lakes Remote Sensing Project

Personnel:

Individual:

Dr Michael F Meyer

Organization:

U.S. Geological Survey

Position:

Geographer

Address:

1 Gifford Pinchot Dr,

Madison, Wisconsin 53726 USA

Email Address:

mfmeyer@usgs.gov

Web Address:

https://www.usgs.gov/staff-profiles/michael-f-meyer

Id:

https://orcid.org/0000-0002-8034-9434

Role:

Project Lead and Coordinators

Additional Award Information:

Funder:	U.S. Geological Survey
Title:	The Saline Lakes Proejct

Additional Award Information:

Funder:	U.S. Geological Survey
Title:	Mendenhall Fellowship

Additional Award Information:

Funder:	National Science Foundation
Number:	DGE-1347973
Title:	Graduate Research Fellowship

Maintenance

Maintenance:

Description:	This dataset is not currently intended for continual update but could be by implementing the corresponding scripts.
Frequency:	asNeeded

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'unitList'
        |     |     |___text '\n            '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'Persons'
        |     |     |     |  \___attribute 'name' = 'Persons'
        |     |     |     |___text '\n               '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'Number of people'
        |     |     |     |___text '\n            '
        |     |     |___text '\n            '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number of images'
        |     |     |     |  \___attribute 'name' = 'number of images'
        |     |     |     |___text '\n               '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n            '
        |     |     |___text '\n            '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number of observations'
        |     |     |     |  \___attribute 'name' = 'number of observations'
        |     |     |     |___text '\n               '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n            '
        |     |     |___text '\n            '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'Number of observations'
        |     |     |     |  \___attribute 'name' = 'Number of observations'
        |     |     |     |___text '\n               '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n            '
        |     |     |___text '\n         '
        |     |___text '\n      '
        |___text '\n   '

Additional Metadata

additionalMetadata
        |___text '\n      '
        |___element 'metadata'
        |     |___text '\n         '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2024.02.07'
        |     |___text '\n      '
        |___text '\n   '

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

The Extended Global Lake area, Climate, and Population Dataset (GLCP)

Data Entities

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

Additional Metadata

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

The Extended Global Lake area, Climate, and Population Dataset (GLCP)

+/- Data Entities

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

Non-Categorized Data Resource

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

+/- Additional Metadata

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata

Additional Metadata