Data Package Metadata View Summary

The Bear Brook Watershed in Maine, USA: Long-term atmospheric deposition chemistry 1987 - 2012

General Information

Data Package:
Local Identifier:	edi.618.2
Title:	The Bear Brook Watershed in Maine, USA: Long-term atmospheric deposition chemistry 1987 - 2012
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	This dataset includes ambient atmospheric deposition data for the Bear Brook Watershed in Maine (BBWM). The BBWM consists of two watersheds, the reference East Bear (EB), receiving ambient deposition, and the treated West Bear (WB), which received experimental elevated N+S deposition for 27 years. Ambient wet deposition was collected from 1987 to 2012 using AeroChem collectors, and the measured precipitation chemistry was interpolated to calculate monthly and annual fluxes.
Publication Date:	2020-09-28

Time Period

Begin:

1987

End:

2012

People and Organizations
Contact:	Patel, Kaizad F. (Pacific Northwest National Laboratory) [ email ]
Creator:	Patel, Kaizad F. (Pacific Northwest National Laboratory)
Creator:	Fernandez, Ivan J. (University of Maine)
Creator:	Nelson, Sarah J. (University of Maine; Appalachian Mountain Club)
Creator:	Spencer, Cheryl J. (University of Maine)
Creator:	Norton, Stephen A. (University of Maine)

Data Entities
Data Table Name:	Bear Brook 2 - deposition all
Description:	Bear Brook watershed deposition all
Data Table Name:	Bear Brook 2 - deposition annual
Description:	Bear Brook watershed deposition annual
Data Table Name:	Bear Brook 2 - deposition monthly
Description:	Bear Brook watershed deposition monthly

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/618/2/54f5ecfb4533b06e72f6a8e2041e9b81
Name:	Bear Brook 2 - deposition all
Description:	Bear Brook watershed deposition all
Number of Records:	1602
Number of Columns:	25

Table Structure

Object Name:

bbwm_deposition_all.csv

Size:

153016 bytes

Authentication:

01a213e45335edd6f9e0f7813159959e Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

site

record_type

year

month

day

running_day_of_project

julian_day

Ca_ueq_L

Mg_ueq_L

K_ueq_L

Na_ueq_L

Cl_ueq_L

SO4_ueq_L

NO3_ueq_L

NH4_ueq_L

Si_mg_L

Al_ppb

pH_air_eqll

anc_ueq_L

spec_conductance_us_cm

apparent_color_pcu

volume_mL

vol_converted_to_depth_mm

belfort_gage_depth_mm

comment

Definition:

Precipitation collection site (AEROCHEM collectors)

regular vs. duplicate samples

year

month

day

running day of the project that a sample was taken

Running day of the year that a sample was taken. Useful for graphical display.

Calcium, determined by: - Atomic Absorption Spectrophotometry (AAS) with N2O-acetylene flame (1998 and prior) - Inductively Coupled Atomic Emission Spectroscopy (ICP) from 1999-2003 - Ion Chromatography (2004 forward)

Magnesium, determined by: - Atomic Absorption Spectrophotometry (AAS) with N2O-acetylene flame (1998 and prior) - Inductively Coupled Atomic Emission Spectroscopy (ICP) from 1999-2003 - Ion Chromatography (2004 forward)

Potassium, determined by: - Atomic Absorption Spectrophotometry (AAS) with N2O-acetylene flame (1998 and prior) - Inductively Coupled Atomic Emission Spectroscopy (ICP) from 1999-2003 - Ion Chromatography (2004 forward)

Sodium, determined by: - Atomic Absorption Spectrophotometry (AAS) with N2O-acetylene flame (1998 and prior) - Inductively Coupled Atomic Emission Spectroscopy (ICP) from 1999-2003 - Ion Chromatography (2004 forward)

chloride, determined by ion chromatography

sulfate, determined by ion chromatography

nitrate, determined by ion chromatography

Ammonium, determined by: - Autoanalyzer (2003 and prior) - Ion Chromatography (2004 forward)

Silicon (as Si), determined by autoanalyzer

total dissolved aluminum, determined by: - Atomic Absorption Spectrophotometry (AAS) with N2O-acetylene flame (1998 and prior) - Inductively Coupled Atomic Emission Spectroscopy (ICP) from 1999

Air-equilibrated pH, determined by electrode, with 300 ppm standard air bubbled in

acid neutralizing capacity, determined by Gran titration

Measured conductivity, determined with a Wheatstone bridge

unfiltered sample, determined by 475.5 nm spectrophotometer until 2002 and by color wheel 2003-2004.

annual rainfall

Volume of precipitation collected converted to a depth value using the catch area of the funnel

rainfall received, measured using a Belfort rain gauge

comments

Storage Type:

string

float

string

Measurement Type:

nominal

ratio

nominal

Measurement Values Domain:

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	AERSU
Definition	summit
Source

Code Definition

Code	AERCA
Definition	mid-elevation camp
Source

Code Definition

Code	AEREA
Definition	East Bear AEROCHEM
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	REG
Definition	regular
Source

Unit	nominalYear
Type	natural
Min	1987
Max	2012

Unit	nominalMonth
Type	natural
Min	1
Max	12

Unit	nominalDay
Type	natural
Min	1
Max	31

Unit	number
Type	natural
Min	665
Max	9820

Unit	nominalDay
Type	natural
Min	2
Max	366

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	62.9

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	37.8

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	42.4

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	166.2

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	195

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	229

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	215

Unit	microEquivalentsPerLiter
Type	real
Min	0
Max	88.6

Unit	milligramsPerLiter
Type	real
Min	0
Max	4.27

Unit	partsPerBillion
Type	real
Min	0
Max	42

Unit	dimensionless
Type	real
Min	3.54
Max	7.69

Unit	microEquivalentsPerLiter
Type	real
Min	-227
Max	29.4

Unit	microSiemensPerCentimeter
Type	real
Min	1
Max	131

Unit	platinumCobaltUnits
Type	whole
Min	0
Max	107

Unit	milliliter
Type	real
Min	0
Max	13620

Unit	millimeter
Type	real
Min	0
Max	200.6

Unit	millimeter
Type	real
Min	0
Max	215.9

Definition

comments

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/618/2/cebcea6afe965f080ed3833a967f934f
Name:	Bear Brook 2 - deposition annual
Description:	Bear Brook watershed deposition annual
Number of Records:	25
Number of Columns:	13

Table Structure

Object Name:

bbwm_deposition_annual.csv

Size:

1594 bytes

Authentication:

1742704cd7ad68f49f605c8e0223a3fc Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

H2O_mm

Ca_eq_ha

Mg_eq_ha

K_eq_ha

Na_eq_ha

NH4_eq_ha

NO3_eq_ha

Cl_eq_ha

SO4_eq_ha

H_eq_ha

NH4_mani_eq_ha

SO4_mani_eq_ha

Definition:

USGS water year (Oct-1 to Sep-30)

rainfall

hydrogen ions

calcium

magnesium

potassium

sodium

chloride

nitrate

ammonium

sulfate

ammonium added from the treatment

sulfate added from the treatment

Storage Type:

float

Measurement Type:

ratio

Measurement Values Domain:

Unit	nominalYear
Type	natural
Min	1988
Max	2012

Unit	millimeter
Type	natural
Min	891
Max	2033

Unit	equivalentsPerHectare
Type	real
Min	9.4
Max	63.6

Unit	equivalentsPerHectare
Type	real
Min	6.9
Max	85.4

Unit	equivalentsPerHectare
Type	real
Min	2.5
Max	23.1

Unit	equivalentsPerHectare
Type	real
Min	84.1
Max	347

Unit	equivalentsPerHectare
Type	real
Min	27.6
Max	146

Unit	equivalentsPerHectare
Type	natural
Min	46
Max	258

Unit	equivalentsPerHectare
Type	natural
Min	97
Max	453

Unit	equivalentsPerHectare
Type	natural
Min	91
Max	431

Unit	equivalentsPerHectare
Type	natural
Min	75
Max	447

Unit	equivalentsPerHectare
Type	whole
Min	0
Max	1905

Unit	equivalentsPerHectare
Type	whole
Min	0
Max	1905

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/618/2/25324aeef27991eed554c947c6177fe0
Name:	Bear Brook 2 - deposition monthly
Description:	Bear Brook watershed deposition monthly
Number of Records:	311
Number of Columns:	12

Table Structure

Object Name:

bbwm_deposition_monthly.csv

Size:

14825 bytes

Authentication:

c2b045aee3e86008ca339b0d75277543 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

Column Name:

year

month

H2O_mm

H_eq_ha

Ca_eq_ha

Mg_eq_ha

K_eq_ha

Na_eq_ha

Cl_eq_ha

NO3_eq_ha

NH4_eq_ha

SO4_eq_ha

Definition:

year

month

rainfall

hydrogen ions

calcium

magnesium

potassium

sodium

chloride

nitrate

ammonium

sulfate

Storage Type:

float

Measurement Type:

ratio

Measurement Values Domain:

Unit	nominalYear
Type	natural
Min	1987
Max	2013

Unit	nominalMonth
Type	natural
Min	1
Max	12

Unit	millimeter
Type	real
Min	3
Max	386

Unit	equivalentsPerHectare
Type	real
Min	0.8
Max	108.6

Unit	equivalentsPerHectare
Type	real
Min	0
Max	20.3

Unit	equivalentsPerHectare
Type	real
Min	0
Max	37

Unit	equivalentsPerHectare
Type	real
Min	0
Max	19.4

Unit	equivalentsPerHectare
Type	real
Min	0
Max	168.7

Unit	equivalentsPerHectare
Type	real
Min	0
Max	191.7

Unit	equivalentsPerHectare
Type	real
Min	0.6
Max	67.7

Unit	equivalentsPerHectare
Type	real
Min	0
Max	40.8

Unit	equivalentsPerHectare
Type	real
Min	0
Max	130.5

Missing Value Code:

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:
(No thesaurus)	Bear Brook Watershed in Maine, BBWM, temperate forests, acidification
LTER Controlled Vocabulary	watersheds, biogeochemistry, nitrogen, sulfur, wet deposition, nutrient budgets, air quality, precipitation, rainfall

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:

Detailed collection and analysis methods can be found in Norton et al. 1999 (doi: 10.1023/A:1006115011381) and Navratil et al. 2010 (doi: 10.1007/s10661-010-1527-z).

These data include ambient wet deposition (for East Bear). The experimental watershed, West Bear, received ambient deposition of all species except for NH4 and SO4.

To calculate NH4 and SO4 deposition for West Bear, add `NH4_mani_eq_ha` or `SO4_mani_eq_ha` to the respective ambient value.

Wet deposition was collected at the site until 2012. For wet deposition post-2012, and for dry deposition for the entire period, we recommend using data from the NADP CASTNET site in Howland, ME (HOW132).

People and Organizations

Publishers:

Organization:

Environmental Data Initiative

Email Address:

info@environmentaldatainitiative.org

Web Address:

https://environmentaldatainitiative.org

Creators:

Individual:

Kaizad F. Patel

Organization:

Pacific Northwest National Laboratory

Email Address:

kaizad.patel@pnnl.gov

Id:

https://orcid.org/0000-0001-6437-7809

Individual:

Ivan J. Fernandez

Organization:

University of Maine

Email Address:

ivanjf@maine.edu

Id:

https://orcid.org/0000-0002-7220-2205

Individual:

Sarah J. Nelson

Organization:

University of Maine; Appalachian Mountain Club

Email Address:

snelson@outdoors.org

Id:

https://orcid.org/0000-0003-3000-7521

Individual:

Cheryl J. Spencer

Organization:

University of Maine

Email Address:

rpt372@maine.edu

Individual:

Stephen A. Norton

Organization:

University of Maine

Email Address:

norton@maine.edu

Contacts:

Individual:

Kaizad F. Patel

Organization:

Pacific Northwest National Laboratory

Email Address:

kaizad.patel@pnnl.gov

Id:

https://orcid.org/0000-0001-6437-7809

Temporal, Geographic and Taxonomic Coverage

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

Time Period

Begin:

1987

End:

2012

Sampling Site:

Description:

BBWM is located in eastern Maine, USA at an elevation of 450.8 m. Soils are coarse-loamy, mixed, frigid Typic and Aquic Haplorthods. Bedrock consists dominantly of quartzite, phyllite, and calc-silicate low-grade metasediments, and minor granite dikes. The lower elevations are dominated by hardwood stands, and the upper elevations are dominated by softwood stands.

Site Coordinates:

Longitude (degree):

-68.1

Latitude (degree):

44.87

Project

Maintenance

Maintenance:

Description:	completed
Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'nominalMonth'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'nominalMonth'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'equivalentsPerHectare'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'equivalentsPerHectare'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'equivalents of solute dissolved per hectare'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'microEquivalentsPerLiter'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'microEquivalentsPerLiter'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'partsPerBillion'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'partsPerBillion'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'microSiemensPerCentimeter'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'microSiemensPerCentimeter'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'conductivity'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'platinumCobaltUnits'
        |     |     |     |  \___attribute 'multiplierToSI' = ''
        |     |     |     |  \___attribute 'name' = 'platinumCobaltUnits'
        |     |     |     |  \___attribute 'parentSI' = ''
        |     |     |     |  \___attribute 'unitType' = ''
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___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.

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Data Package Metadata View Summary

The Bear Brook Watershed in Maine, USA: Long-term atmospheric deposition chemistry 1987 - 2012

Data Entities

Data Table

Data Table

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

Maintenance

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

The Bear Brook Watershed in Maine, USA: Long-term atmospheric deposition chemistry 1987 - 2012

+/- Data Entities

Data Table

Data Table

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

+/- Maintenance

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata