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A Spatial Model of Atmospheric Deposition For the Northeastern U.S.

Entry ID: EOSWEBSTER_CLIMCALC_NE_US

Summary

Abstract: CLIMCALC is a simple model of physical and chemical climate for the northeasten United States (New York and New England) that can be incorporated into a geographic information system (GIS) for integration with ecosystem models presented. The variables include average maximum and minimum daily temperature, precipitation, humidity, and solar radiation, all at a monthly time step, as well as annual ... wet and dry deposition of sulfur and nitrogen. Regressions on latitude, longitude, and elevation are fitted to regional data bases of these variables The equations are combined with a digital elevation model (DEM) of the region to generate GIS coverages of each variableresults are from a model of atmospheric deposition called CLIMCALC. Spatial patterns of atmospheric deposition across the northeastern United States were evaluated and summarized in a simple model as a function of elevation and geographic position within the region. For wet deposition, 3-11 yr of annual concentration data for the major ions in precipitation were obtained from the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) for 26 sites within the region. Concentration trends were evaluated by regression of annual mean concentrations against latitude and longitude. For nitrate, sulfate, and ammonium concentrations, a more than twofold linear decrease occurs from western New York and Pennsylvania to eastern Maine. These trends were combined with regional and elevational trends or precipitation amount, obtained from 30-yr records of annual precipitation at >300 weather stations, to provide long-term patterns of wet deposition. Regional trends of dry deposition of N and S compounds were determined using 2-3 yrs of particle and gas concentration data collected by the National Dry Deposition Network (NDDN) and several other sources, in combination with estimates of deposition velocities. Contrary to wet deposition trends, the dominant air concentration trends were steep decreases from south to north, creating regional decreases in total deposition (wet + dry) from the southwest to the northeast. This contrast between wet and dry deposition trends suggests that within the northeast the two deposition forms are received in different proportions from different source areas, wet deposited materials primarily from areas to the west and dry deposited materials primarily from urban areas along the southern edge of the region. The equations generated describing spatial patterns of wet and dry depositions within the region were entered into a geographic information system (GIS) containing a digital elevation model (DEM) in order to develop spatially explicit predictions of atmospheric deposition for the region.

Related URL

Link: View Related Information

Description: Pnet model journal articles, PnET source code, PnET executable.

Geographic Coverage

Spatial coordinates

N: 48.0

S: 38.0

E: -66.0

W: -77.0

Data Set Citation

Dataset Originator/Creator: Scott V. Ollinger, John D. Aber, Gary M. Lovett, Sarah E. Millham, Richard G. Lathrop, Jennifer M. Ellis

Dataset Title: A Spatial Model of Atmospheric Deposition For the Northeastern U.S.

Dataset Series Name: Ecological Applications 3(3) pp459-472

Dataset Release Date: 1993-01-01T00:00:00.000Z

Dataset Publisher: CSRC, University of New Hampshire

Version: Not provided

Data Presentation Form: ASCII and image

Online Resource: http://eos-earthdata.sr.unh.edu/

Dataset Originator/Creator: Scott V. Ollinger, John D. Aber, C. Anthony Federer, Gary M Lovett, Jennifer M. Ellis

Dataset Title: Modeling Physical and Chemical Climate of the Northeastern United States for a Geographic Information System

Dataset Series Name: U.S. Forest Service General Technical Report NE-191

Dataset Publisher: CSRC, University of New Hampshire

Version: Not provided

Data Presentation Form: ASCII and image

Online Resource: http://eos-earthdata.sr.unh.edu/

Parent DIF

This description is a member of a collection. The collection is described in
EOSWEBSTER_PnET_Ecosystem_Model

Temporal Coverage

Start Date: 1970-01-01

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > Northeastern US

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE > Eastern Maine

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK > Western New York

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > PENNSYLVANIA

Science Keywords

ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT

ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROGEN OXIDES

ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFUR OXIDES

ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFATE

Project

ESIP > Earth Science Information Partners Program

Ancillary Keywords

ATMOSPHERIC DEPOSITION

NITROGEN

Data Set Progress

ACTIVE

Data Center

EOS-EARTHDATA, Complex Systems Research Center, Institute for the Study of Earth, Oceans, and Space, Univ. of New Hampshire

Data Center URL: http://eos-earthdata.sr.unh.edu/

Data Center Personnel
Name: EARTH SYSTEMS RESEARCH CENTER Phone: 1-603-862-3785 Fax: 603-862-0188 Email: eosearthdatasupport at foghorn.sr.unh.edu Contact Address: Complex Systems Research Center Institute for the Study of Earth, Oceans, and Space Morse Hall University of New Hampshire City: Durham Province or State: New Hampshire Postal Code: 03824 Country: USA

Distribution

Distribution Media: CD-ROM, Online internet (HTTP)

Distribution Format: ASCII, GIF images

Fees: None

Personnel

JOHN D. ABER

Role: INVESTIGATOR

Phone: 603-862-3045

Email: John.Aber at unh.edu

Contact Address:

University of New Hampshire

Complex Systems Research Center

City: Durham

Province or State: NH

Postal Code: 03824

Country: USA

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 1970-01-01

Last DIF Revision Date: 2018-11-12

Reformat as ISO 19115 document

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