Rocky Mountain Snowpack Chemistry at Selected Sites for 2001
Because regional-scale atmospheric deposition data in the Rocky Mountains are sparse, a program was designed by the U.S. Geological Survey, in cooperation with the National Park Service, U.S. Department of Agriculture Forest Service, and other agencies, to more thoroughly determine the chemical comp...
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ftdtic:ADA440763 2023-05-15T16:37:53+02:00 Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 Ingersoll, George P. Mast, M. A. Clow, David W. Nanus, Leora Campbell, Donald H. Handran, Heather DEPARTMENT OF THE INTERIOR WASHINGTON DC 2003 text/html http://www.dtic.mil/docs/citations/ADA440763 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA440763 en eng http://www.dtic.mil/docs/citations/ADA440763 Approved for public release; distribution is unlimited. DTIC Meteorology Physical Chemistry Snow Ice and Permafrost *PRECIPITATION *SNOW COVER *CONTAMINANTS *ROCKY MOUNTAINS *CHEMICAL ANALYSIS IONS SPATIAL DISTRIBUTION AMMONIUM COMPOUNDS ALKALINITY NITRATES CONCENTRATION(CHEMISTRY) SULFATES GEOLOGICAL SURVEYS CONCENTRATION(COMPOSITION) MOUNTAINS DISTRIBUTION SITES Text 2003 ftdtic 2016-02-22T00:55:59Z Because regional-scale atmospheric deposition data in the Rocky Mountains are sparse, a program was designed by the U.S. Geological Survey, in cooperation with the National Park Service, U.S. Department of Agriculture Forest Service, and other agencies, to more thoroughly determine the chemical composition of precipitation and to identify sources of atmospherically deposited contaminants in a network of high-elevation sites. Samples of seasonal snowpacks at 57 geographically distributed sites, in a regional network from New Mexico to Montana, were collected and analyzed for major ions (including ammonium, nitrate, and sulfate), alkalinity, and dissolved organic carbon during 2001. Sites selected in this report have been sampled annually since 1993, enabling identification of increases or decreases in chemical concentrations from year to year. Spatial patterns in snowpack-chemical data for concentrations of ammonium, nitrate, and sulfate indicate that concentrations of these acid precursors in less developed areas of the region are lower than concentrations in the heavily developed areas. Results for the 2001 snowpackchemistry analyses, however, indicate increases in concentrations of ammonium and nitrate in particular at sites where past concentrations typically were lower. Since 1993, concentrations of nitrate and sulfate were highest from snowpack samples in northern Colorado that were collected from sites adjacent to the Denver metropolitan area to the east and the coal-fired powerplants to the west. The original document contains color images. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology Physical Chemistry Snow Ice and Permafrost *PRECIPITATION *SNOW COVER *CONTAMINANTS *ROCKY MOUNTAINS *CHEMICAL ANALYSIS IONS SPATIAL DISTRIBUTION AMMONIUM COMPOUNDS ALKALINITY NITRATES CONCENTRATION(CHEMISTRY) SULFATES GEOLOGICAL SURVEYS CONCENTRATION(COMPOSITION) MOUNTAINS DISTRIBUTION SITES |
spellingShingle |
Meteorology Physical Chemistry Snow Ice and Permafrost *PRECIPITATION *SNOW COVER *CONTAMINANTS *ROCKY MOUNTAINS *CHEMICAL ANALYSIS IONS SPATIAL DISTRIBUTION AMMONIUM COMPOUNDS ALKALINITY NITRATES CONCENTRATION(CHEMISTRY) SULFATES GEOLOGICAL SURVEYS CONCENTRATION(COMPOSITION) MOUNTAINS DISTRIBUTION SITES Ingersoll, George P. Mast, M. A. Clow, David W. Nanus, Leora Campbell, Donald H. Handran, Heather Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
topic_facet |
Meteorology Physical Chemistry Snow Ice and Permafrost *PRECIPITATION *SNOW COVER *CONTAMINANTS *ROCKY MOUNTAINS *CHEMICAL ANALYSIS IONS SPATIAL DISTRIBUTION AMMONIUM COMPOUNDS ALKALINITY NITRATES CONCENTRATION(CHEMISTRY) SULFATES GEOLOGICAL SURVEYS CONCENTRATION(COMPOSITION) MOUNTAINS DISTRIBUTION SITES |
description |
Because regional-scale atmospheric deposition data in the Rocky Mountains are sparse, a program was designed by the U.S. Geological Survey, in cooperation with the National Park Service, U.S. Department of Agriculture Forest Service, and other agencies, to more thoroughly determine the chemical composition of precipitation and to identify sources of atmospherically deposited contaminants in a network of high-elevation sites. Samples of seasonal snowpacks at 57 geographically distributed sites, in a regional network from New Mexico to Montana, were collected and analyzed for major ions (including ammonium, nitrate, and sulfate), alkalinity, and dissolved organic carbon during 2001. Sites selected in this report have been sampled annually since 1993, enabling identification of increases or decreases in chemical concentrations from year to year. Spatial patterns in snowpack-chemical data for concentrations of ammonium, nitrate, and sulfate indicate that concentrations of these acid precursors in less developed areas of the region are lower than concentrations in the heavily developed areas. Results for the 2001 snowpackchemistry analyses, however, indicate increases in concentrations of ammonium and nitrate in particular at sites where past concentrations typically were lower. Since 1993, concentrations of nitrate and sulfate were highest from snowpack samples in northern Colorado that were collected from sites adjacent to the Denver metropolitan area to the east and the coal-fired powerplants to the west. The original document contains color images. |
author2 |
DEPARTMENT OF THE INTERIOR WASHINGTON DC |
format |
Text |
author |
Ingersoll, George P. Mast, M. A. Clow, David W. Nanus, Leora Campbell, Donald H. Handran, Heather |
author_facet |
Ingersoll, George P. Mast, M. A. Clow, David W. Nanus, Leora Campbell, Donald H. Handran, Heather |
author_sort |
Ingersoll, George P. |
title |
Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
title_short |
Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
title_full |
Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
title_fullStr |
Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
title_full_unstemmed |
Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 |
title_sort |
rocky mountain snowpack chemistry at selected sites for 2001 |
publishDate |
2003 |
url |
http://www.dtic.mil/docs/citations/ADA440763 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA440763 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA440763 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766028180390412288 |