Data Package Metadata View Summary

North-Temperate and Boreal annual median TP concentrations and seasonal climate means from 389 lakes, 1998-2017

General Information

Data Package:

Local Identifier:

edi.1283.2

Title:

North-Temperate and Boreal annual median TP concentrations and seasonal climate means from 389 lakes, 1998-2017

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

This dataset accompanies a paper submitted for publication to Limnology and Oceanography Letters, expected publication year 2023, by Isles et al., entitled "Widespread synchrony in phosphorus concentrations in northern lakes linked to winter temperature and summer precipitation." This dataset comprises April-November median TP concentrations for 389 lakes in Fennoscandia, the north-central and northeastern USA, and central to eastern Canada, between 1998 and. 2017. The dataset also includes seasonal means for climate variables divided into winter (DJF), spring (MAM), summer (JJA), and fall (SON) means of air temperature, wind speed, and precipitation. The data all originate with publicly collected datasets, and many data source have data from additional time periods or for additional variables collected over longer time periods available from websites or through contact forms.

Publication Date:

2023-01-26

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

1998

End:

2017

People and Organizations
Contact:	Isles, Peter (Vermont Department of Environmental Conservation) [ email ]
Creator:	Isles, Peter (Vermont Departmment of Environmental Conservation)
Creator:	Creed, Irena
Creator:	Hessen, Dag (Norwegian Institute of Water Research)
Creator:	Kortelainen, Pirkko
Creator:	Paterson, Michael (IISD Experimental Lakes Area)
Creator:	Pomati, Francesco
Creator:	Rusak, James
Creator:	Vuorenmaa, Jussi (SKYE (Finnish Environment Institute))
Creator:	Bergström, Ann-Kristin

Data Entities
Data Table Name:	Annual TP Concentrations in Northern Lakes with ERA5 seasonal climate means
Description:	This table contains total phosphorus (TP) data (µg/L) from 389 lakes, collected from several long-term monitoring programs throughout central and eastern Canada, the eastern United States, Sweden, Finland, and Norway. All TP data are presented as annual median values of samples collected from April to November, with medians representing as many as 23 or as few as 1 samples per year.

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1283/2/19ef38d98ff9ee63a181364b75abc5e8
Name:	Annual TP Concentrations in Northern Lakes with ERA5 seasonal climate means
Description:	This table contains total phosphorus (TP) data (µg/L) from 389 lakes, collected from several long-term monitoring programs throughout central and eastern Canada, the eastern United States, Sweden, Finland, and Norway. All TP data are presented as annual median values of samples collected from April to November, with medians representing as many as 23 or as few as 1 samples per year.
Number of Records:	5333
Number of Columns:	21

Table Structure

Object Name:

Annual TP Concentrations in Northern Lakes with ERA5 seasonal climate means.csv

Size:

1342186 byte

Authentication:

ebd819e39833e384809c0ae3cd9f01b0 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Station

Latitude

Longitude

Dataset

Region

TP_ugL

Year

TP_zscore

temp_djf

temp_mam

temp_jja

temp_son

precip_djf

precip_mam

precip_jja

precip_son

windspeed_djf

windspeed_mam

windspeed_jja

windspeed_son

Column Name:

Station

Latitude

Longitude

Dataset

Region

TP_ugL

Year

TP_zscore

temp_djf

temp_mam

temp_jja

temp_son

precip_djf

precip_mam

precip_jja

precip_son

windspeed_djf

windspeed_mam

windspeed_jja

windspeed_son

Definition:

This is a column of unique station identifiers. Station IDs are inherited from the original data source where available. Where only station names were available from the original source, unique IDs were created.

Sampling site name, inherited from the original data sources.

Latitude, in decimal degrees

Longitude, in decimal degrees

This is a code for the source of the monitoring data, assigned by the authors. For sites in Nova Scotia and New Brunswick, dataset is coded as the url of the data source.

"Region" values are assigned in this study based on a combination of geographic proximity and sampling authority (see associated manuscript by Isles et al. for more details). Region was used as a grouping variable in some analyses.

Total Phosphorus concentrations (annual medians) expressed in micrograms per liter (µg/L).

Calendar year

Total Phosphorus concentrations transformed to z-scores for each lake.

Mean temperature in December, January, and February of each year. December temperatures are from the previous calendar year.

Mean Temperature (degrees C) in March, April, and May of each year

Mean Temperature (˚C) for June, July, and August of each year

Temperature (˚C) averaged across September, October, and November of each year

Precipitation in meters/day averaged across December, January, and February for each year

Precipitation in meters per day averaged across March, April, and May for each year

Precipitation in meters per day averaged across June, July, and August for each year

Precipitation in meters per day averaged across September, October, and November for each year

Wind speed averaged across December, January, and February for each year

Windspeed in meters/second averaged across March, April, and May of each year

Wind speed in meters/second averaged across June, July, and August of each year

Wind speed in meters/second averaged across September, October, and November of each year

Storage Type:

string

float

string

float

Measurement Type:

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

Sampling site name, inherited from the original data sources.

Unit	decimal degrees
Type	real

Unit	decimal degrees
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Adirondacks
Definition	This dataset comes from the Adirondacks Lake Survey Corporation (http://www.adirondacklakessurvey.org/index.shtml).
Source

Code Definition

Code	DorsetLakes
Definition	This dataset comes from the Dorset Lakes research area in Ontario, Canada
Source

Code Definition

Code	Finland
Definition	Data contributed by Finnish collaborators (See data creators for more details)
Source

Code Definition

Code	http://data.ec.gc.ca/data/substances/monitor/national-long-term-water-quality-monitoring-data/maritime-coastal-basin-long-term-water-quality-monitoring-data/
Definition	Data source for New Brunswick and Nova Scotia data. See creators section for more details
Source

Code Definition

Code	IISD_ELA
Definition	This dataset comes from the IISD Experimental Lakes Area in Ontario, Canada (https://www.iisd.org/ela/).
Source

Code Definition

Code	Maine
Definition	This dataset was collected by the Maine Department of Environmental Protection (https://www.maine.gov/dep/water/monitoring/lake/lakedata.htm).
Source

Code Definition

Code	Norway
Definition	Data contribute by Norwegian collaborators. See "data creators" section for more details
Source

Code Definition

Code	Sweden
Definition	This dataset was collected by the Swedish government and maintained by the Swedish University of Agricultural Sciences (SLU) (https://miljodata.slu.se/MVM/).
Source

Code Definition

Code	Turkey Lakes Watershed
Definition	Data collected at the Turkey Lakes Watershed research station. See "data creators" section for more details.
Source

Code Definition

Code	Vermont
Definition	This dataset was collected by the Vermont Department of Environmental Conservation (https://dec.vermont.gov/watershed/lakes-ponds/monitor/lay-monitoring#View%20and%20Export%20Lay%20Monitoring%20Data).
Source

Code Definition

Code	WI_LTER_NUTRIENTS
Definition	This dataset was collected as part of the North Temperate Lakes Long-term Ecological Research Station (https://lternet.edu/site/north-temperate-lakes-lter/).
Source

Definition

Unit	microgramPerLiter
Type	real

Unit	Calendar year
Type	integer

Unit	Z-score
Type	real

Unit	Degrees C
Type	real

Unit	Degrees C
Type	real

Unit	Degrees C
Type	real

Unit	Degrees C
Type	real

Unit	meterPerDay
Type	real

Unit	meterPerDay
Type	real

Unit	meterPerDay
Type	real

Unit	meterPerDay
Type	real

Unit	meterPerSecond
Type	real

Unit	meterPerSecond
Type	real

Unit	meterPerSecond
Type	real

Unit	meterPerSecond
Type	real

Missing Value Code:

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Code	NA
Expl	For several sites close to shorelines, meteorological data were not available because due to grid size of the ERA5 Land data product, sites were assigned to oceans, which were masked

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

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:
LTER Controlled Vocabulary	lakes, phosphorus, climate
(No thesaurus)	Boreal lakes

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:

All total phosphorus data were collected from lake surface, from lake epilimnia, or from integrated samples during fall overturn (in the case of Norwegian lakes). We kept data from lakes where there were a minimum of 8 years with observations from 1998-2017, and where median TP over that period was less than 24 µg/L. All total phosphorus data were analyzed using standard methods, but data collection strategies differed. A brief description of each sampling program is included below.

___________________________________

Finnish Environment Institute (SKYE):

Regular monitoring of air pollution and climate change impacts on reference lakes in Finland started in 1990. The monitoring program has been carried out by Finnish Environment Institute (Syke) including 26 small headwater lakes. All the lakes are located in forested or arctic hill areas distributing throughout the whole country from South to North Finland and have no or only a little direct human disturbance. Most of the lakes belong to international monitoring programs (UNECE ICP Waters, UNECE Integrated Monitoring, EU National Emission Ceilings, LTER Finland). Water samples were taken from the deepest point of each lake during the winter, spring, summer and autumn. As part of the basic monitoring programme for the lakes one sample during thermal winter stratification (March in South, April in North Finland), 1-2 samples during the spring flows (spring thermal overturn) (April–May in South, May–June in North), 1-2 samples during thermal summer stratification (June-August) and two samples during the autumn thermal overturn (September–November) were taken. The chemical analyses were performed by the laboratories of Environmental Administration according to standard methods.

______________________________________

Turkey Lakes, Ontario

The Turkey Lakes Watershed (TLW) is 1 of 5 hydrologically "calibrated" basins in eastern Canada that were originally devoted to process-oriented research into "acid rain" effects. They were selected to cover a wide range of climatic and hydrological conditions, deposition magnitudes, and terrain characteristics. Batchawana Lake is the headwater (highest elevation) lake in the TLW. It has two distinct basins, north and south (L1 and L2). Norberg Creek flows out of Batchawana Lake South and traverses a large change in elevation (497-388 meters above mean sea level) prior to entering Wishart Lake (L3). Norberg Creek then continues through Little Turkey Lake (L4) and Turkey Lake (L5) and finally discharges into the Batchawana River and ultimately Lake Superior. The data associated to this page are separated into archival data from 1980 to 2006, and then data from 2006 to 2019.

The lakes range from 5.9 hectares (Batchawana North), 5.8 hectares (Batchawana South), 19.2 hectares (Wishart), 19.2 hectares (Little Turkey), to 52 hectares (Turkey) in area, and from 4.5 m (Wishart), 10.9 m (Batchawana South), 11.3 m, (Batchawana North), 13 m (Little Turkey) to 37 m (Turkey) in depth. Stations for monitoring chemical and physical characteristics are situated at the deepest point in each lake. The coordinates of each lake are: L1 - 47°04'00.6"N, 84°23'36.4"W L2 - 47°03'50.7"N, 84°23'30.0"W L3 - 47°03'01.2"N, 84°24'00.3"W L4 - 47°02'35.3"N, 84°24'28.8"W L5 - 47°02'55.9"N, 84°25'21.2"W The lakes are considered "dimictic" (i.e. experiencing complete mixing of the water column in spring and autumn), although spring mixing is sometimes incomplete. Thermal stratification develops in Batchawana, Little Turkey and Turkey Lakes during summer and winter each year. Due to Wishart Lake's shallow nature, wind-induced mixing generally prevents thermal stratification. The sediments and undisturbed bottom waters of the lakes exert a dissolved oxygen (DO) demand resulting in reduced bottom water DO during periods of thermal stratification and even anoxia in the case of Batchawana and Little Turkey Lakes. There is a gradient in the pH and major element chemistry of the lakes. Thin soils devoid of calcium carbonate dominate higher elevations in the TLW while lower elevations have thicker soils with a small amount of calcium carbonate. As a result, waters draining into and out of Batchawana Lake have calcium and alkalinity concentrations that are approximately half those observed in Turkey Lake. Alkalinity is a measure of a lake's ability to neutralize acid. Hence Batchawana Lake is more sensitive to the effects of acid rain than Turkey Lake. In contrast to calcium and alkalinity, sulphate concentrations (an indicator of acid rain input) are almost equal in Batchawana Lake and Turkey Lake. Lake water phosphorus concentrations are low (6-8 mg/L), and as is the case with most lakes, phosphorus availability limits algal growth in the TLW. Nitrogen varies irregularly between lakes, but concentrations (particularly nitrate) exhibit a pronounced annual cycle. The seasonal pattern observed for nitrate indicates that nitrogen-based acidification is more important in the TLW than in any of the other sites in eastern Canada (Lac Laflamme, Plastic, ELA and Kejimkujik). The Climate Change and Air Pollution (CCAP) program was established in 2016 to identify the severity and extent of adverse impacts of current and future air emissions on aquatic ecosystems to support regulatory actions and policy development. The program includes a number of components, including identifying, monitoring and defining air quality and greenhouse gas (GHG) concerns; improving our understanding of the short- and long-term effects of atmospheric pollutants on the environment; developing a plan to combat climate change; and monitoring and reducing both domestic and transboundary emissions of GHGs. The program is also responsible for identifying and studying emerging issues including multipollutant impacts, major urban sources, and effects of increasing heat on air pollutant formation, among others. On-going cooperation and support with the Provinces and Territories, international governments and organizations and academia are vital to deliver these priorities to Canadians. Supporting Projects: Climate Change and Air Pollutants (CCAP)

___________________________

Swedish Lakes

The Swedish lakes used in this monitoring program were taken from the "Trend Lakes" and "Reference Lakes" subsets of the Swedish lake monitoring program. These lakes are sampled multiple times per year, beginning in the 1980's (for most lakes). Surface samples are taken for TP analysis. A more detailed description can be found in this publication:

Fölster, J., Johnson, R.K., Futter, M.N. et al. The Swedish monitoring of surface waters: 50 years of adaptive monitoring. AMBIO 43 (Suppl 1), 3–18 (2014). https://doi.org/10.1007/s13280-014-0558-z

and all TP data are available through the monitoring program website (in Swedish):

https://miljodata.slu.se/MVM/

__________________________

Norwegian Data

The data in this analysis are obtained from a Norwegian lake monitoring program

where 70 lakes covering the Norway mainland have been sampled annually from 1986 to 2022. These lakes

represent acid sensitive, headwater lakes on granitic or gneissic bedrock with negligible local pollution sources.

Water samples were collected at the outlet after the autumn circulation period and analysed at the Norwegian

Institute of Water Research

____________________________

Maine (USA) data

Data from Maine Lakes are collected by several monitoring programs coordinated by the Maine Department of Environmental Protection, some of which are collected by Volunteers. TP data used here are surface samples. A description of the Maine Lakes monitoring methods can be found here:

https://www.maine.gov/dep/water/monitoring/lake/lakedata.htm

and a direct link to the TP dataset is here:

http://www.gulfofmaine.org/kb/2.0/record.html?recordid=9212

_______________________________

Vermont

The data on Vermont lakes presented here is collected by the Lay Monitoring Program run by the Vermont Department of Environmental Conservation. A description of the program methods can be found here:

https://dec.vermont.gov/watershed/lakes-ponds/monitor/lay-monitoring

The lay monitoring program collects integrated water samples; in this study, only samples with integrated depths less than or equal to 3 m were used, to ensure that measurements reflected epilimnion concentrations and were comparable to other regions.

___________________

IISD Experimental Lakes Area, Ontario

Samples for lake total phosphorus used in this study were integrated across the epilimnion, or across the entire water column if fully mixed. Raw data over longer timescales and for additional variables are available from the data source upon request, through this website:

https://www.iisd.org/ela/science-data/our-data/

_________________

Environment Canada

Epilimnion total phosphorus data for lakes in New Brunswick and Nova Scotia were accessed through the Environment Canada data portal, available online here:

https://data.ec.gc.ca/data/substances/monitor/national-long-term-water-quality-monitoring-data/?lang=en

__________________

North Temperate Lakes Long-term Ecological Research station (NTL LTER)

Surface mixed layer total phosphorus data were accessed from the core nutrient sampling program of the NTL LTER, published as a dataset here:

Carpenter, S., J. Kitchell, J. Cole, and M. Pace. 2022. Cascade Project at North Temperate Lakes LTER Core Data Nutrients 1991 - 2016 ver 4. Environmental Data Initiative. https://doi.org/10.6073/pasta/03a4d81367dfd1f706b72dc16c87f38e. Accessed 2022-12-21.

__________________

Dorset Lakes, Ontario

The Dorset Lakes total phosphorus data was collected by the Dorset Lakes Environmental Research Centre, and consists of 9 headwater lakes, with data also available from lake catchments, beginning in the 1970s. A description of the monitoring program can be found in a special issue of the Canadian Journal of Fisheries and Aquatic Sciences, here:

Norman D Yan, Andrew M Paterson, Keith M Somers, and Wolfgang A Scheider. An introduction to the Dorset special issue: transforming understanding of factors that regulate aquatic ecosystems on the southern Canadian Shield. Canadian Journal of Fisheries and Aquatic Sciences. 65(5): 781-785. https://doi.org/10.1139/f08-077

Meteorological data were produced by the European Centre for Medium-Range Weather Forecasts ERA-5 Land Monthly data product.

https://www.ecmwf.int/en/era5-land

Description:

This method step describes provenance-based metadata for data contributors

Data Source

Finnish Environment Institute (SKYE)

Data Source

Maine Department of Environmental Protection

Data Source

Swedish University of Agricultural Sciences (SLU)

Data Source

Norwegian Institute of Water Research

Data Source

Vermont Department of Environmental Conservation

Data Source

IISD Experimental Lakes Area, Ontario

Data Source

North Temperate Lakes Long-term Ecological Research station

Data Source

Dorset Environmental Science Centre

Data Source

European Centre for Mid-Range Weather Forecasts (ECMWF)

Data Source

Environment Canada

Data Source

Turkey Lakes watershed study

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:

Peter Isles

Organization:

Vermont Departmment of Environmental Conservation

Address:

Vermont Agency of Natural Resources | Verrmont Department of Environmental Conservation,

1 National Life Drive, Davis 3,

Montpelier, Vermont 05620 USA

Email Address:

peter.isles@vermont.gov

Web Address:

https://dec.vermont.gov/watershed/lakes-ponds/monitor/lay-monitoring#View%20and%20Export%20Lay%20Monitoring%20Data

Id:

https://orcid.org/0000-0003-4446-6788

Individual:

Irena Creed

Email Address:

irena.creed@utoronto.ca

Id:

https://orcid.org/0000-0001-8199-1472

Individual:

Dag Hessen

Organization:

Norwegian Institute of Water Research

Email Address:

d.o.hessen@mn.uio.no

Id:

https://orcid.org/0000-0002-0154-7847

Individual:

Pirkko Kortelainen

Email Address:

pirkko.kortelainen@syke.fi

Id:

https://orcid.org/0000-0002-1448-0688

Individual:

Michael Paterson

Organization:

IISD Experimental Lakes Area

Email Address:

mpaterson@iisd-ela.org

Web Address:

https://www.iisd.org/ela/science-data/our-data/

Id:

https://orcid.org/0000-0002-8526-9126

Individual:

Francesco Pomati

Email Address:

Francesco.Pomati@eawag.ch

Id:

https://orcid.org/0000-0002-9746-3735

Individual:

James Rusak

Email Address:

Jim.Rusak@ontario.ca

Id:

https://orcid.org/0000-0002-4939-6478

Individual:

Jussi Vuorenmaa

Organization:

SKYE (Finnish Environment Institute)

Email Address:

jussi.vuorenmaa@syke.fi

Web Address:

https://www.syke.fi/fi-FI/Tutkimus__kehittaminen/Tutkimus_ja_kehittamishankkeet/Hankkeet/Ilmansaasteiden_ja_ilmastonmuutoksen_vaikutusten_seuranta_pintavesissa

Individual:

Ann-Kristin Bergström

Email Address:

ann-kristin.bergstrom@umu.se

Id:

https://orcid.org/0000-0001-5102-4289

Contacts:

Individual:

Peter Isles

Organization:

Vermont Department of Environmental Conservation

Email Address:

peter.isles@vermont.gov

Id:

https://orcid.org/0000-0003-4446-6788

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1998

End:

2017

Geographic Region:

Description:

This datasets consist of 389 discrete lake sites in 5 countries (Norway, Sweden, Finland, USA, Canada).

Bounding Coordinates:

Northern:	70.34729	Southern:	42.8745
Western:	-93.81726	Eastern:	30.88429

Project

Parent Project Information:

Title:

Widespread synchrony in phosphorus concentrations in northern lakes linked to winter temperature and summer precipitation

Personnel:

Individual:

Peter Isles

Email Address:

peter.isles@vermont.gov

Id:

https://orcid.org/0000-0003-4446-6788

Role:

Project Leader

Abstract:

A paper with the same title identifies synchrony in annual phosphorus concentrations in regions throughout 18 study "regions" in the USA, Canada, Finland, Sweden, and Norway. Statistical analyses identify winter temperature and summer precipitation as the most important drivers of interannual variation in total phosphorus. This dataset is unique in combining good spatial coverage with consistent time-series appropriate for synchrony analyses. A deliberate effort was made to focus on a period without strong directional trends driven by e.g. recovery from eutrophication, to enable focus on inter-annual variability driven by climate.

Maintenance

Maintenance:

Description:	This is a static dataset. Addition of additional years of data is not expected at this time.
Frequency:	asNeeded

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'decimal degrees'
        |     |     |     |  \___attribute 'name' = 'decimal degrees'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'Calendar year'
        |     |     |     |  \___attribute 'name' = 'Calendar year'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'Degrees C'
        |     |     |     |  \___attribute 'name' = 'Degrees C'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'Mean temperature in degrees C averaged across September, October, and November for each year. Temperature values come from the ERA5 monthly reanalysis product (https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5), for grids cells corresponding to the sampling sites.'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'Z-score'
        |     |     |     |  \___attribute 'name' = 'Z-score'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'Z-scores calculated for each lake by subtracting the mean of that lake\'s annual values, then dividing by the standard deviation for each year.'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'emlEditor'
        |     |        \___attribute 'app' = 'ezEML'
        |     |        \___attribute 'release' = '2023.01.25'
        |     |___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

North-Temperate and Boreal annual median TP concentrations and seasonal climate means from 389 lakes, 1998-2017

Data Entities

Data Table

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

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Data Package Metadata View Summary

North-Temperate and Boreal annual median TP concentrations and seasonal climate means from 389 lakes, 1998-2017

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Parent Project Information:

+/- Maintenance

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+/- 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