Rocky Mountain Snowpack Chemistry at Selected Sites, 1993-2010Entry ID: USGS_CO53100
Abstract: Rocky Mountain Regional Snowpack Chemistry Monitoring Study Area: High-elevation sites near the Continental Divide in Montana, Wyoming, Idaho, Colorado, New Mexico, and Utah, 1993 to present
Study Area: Continental Divide in Montana, Wyoming, Utah, Idaho, Colorado, and New Mexico
Period of Project: 1993 to present
Project Number: CO53100
Project Chief: George Ingersoll
Cooperator: National Park ... Service; U.S.D.A. Forest Service; Colorado Department of Public Health and Environment; Teton County, Wyoming
Snowpacks collect atmospheric deposition throughout the snowfall season and offer a unique opportunity to obtain a composite sample of the chemistry of most (roughly November through April) of the annual precipitation at high elevations (> 1800 meters). This project was created to sample the full snowpack at selected sites to determine sources of acid deposition to sensitive mountain watersheds. Since 1993, the project has become the most expansive and comprehensive snowpack-chemical monitoring network of its kind. Beginning with sampling fewer than 20 sites in Colorado in 1993, the network has expanded to greater than 50 locations along the Continental Divide that have been sampled each year since 1993. In the process, techniques have been developed that use robust tracers to separate and quantify local and regional sources of atmospheric deposition of airborne pollutants. Through this program, long-term trends (>19 years, generally) are being developed in snowpack chemistry that enable estimation of normal or background levels, and identification of elevated chemical concentrations at a variety of locations where atmospheric deposition of acidic compounds is a concern. The project primarily monitors federally-managed lands in the Rocky Mountain region including several protected wilderness areas in National Forests and Parks. Applications of this regional snow-chemistry work include identifying regional trends in chemical concentration and deposition as well as monitoring subregional or local effects including power-plant emissions in Colorado or snowmobile usage in Yellowstone and other areas.
To develop methods to accurately represent seasonal snowpack chemistry of a variety of compounds in single, annual samples where repeated sampling is possible in subsequent years.
To maintain year-to-year sampling of a core group of 50 sampling locations to develop long-term trends in atmospheric deposition throughout the region.
To establish background concentrations of major ions, trace metals, and isotopes of nitrogen and sulfur in atmospheric deposition; identify areas of elevated concentrations relative to background levels.
To identify probable sources of elevated atmospheric deposition to snowpacks, and identify trends in chemistry as emissions change from year-to-year. Distinguish local from regional sources.
To support ongoing investigations of process-level studies of effects on sensitive ecosystems of elevated concentrations of acids and other chemicals in atmospheric deposition.
To provide data for future management decisions regarding permitting new emissions sources or planning reduction of existing emissions.
[Summary provided by the USGS.]
Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey
Dataset Title: Rocky Mountain Regional Snowpack Chemistry Monitoring Study Area: High-elevation sites near the Continental Divide in Montana, Wyoming, Idaho, Colorado, New Mexico, and Utah, 1993 to present
Dataset Series Name: CO53100
Dataset Publisher: U.S. Geological Survey
Data Presentation Form: Online FilesOnline Resource: http://co.water.usgs.gov/projects/RM_snowpack/
Start Date: 1993-01-01
ATMOSPHERE > PRECIPITATION > SOLID PRECIPITATION > SNOW
SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > ISOTOPES
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > ELEMENTS > MAJOR ELEMENTS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > ELEMENTS > MINOR ELEMENTS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > ELEMENTS > TRACE ELEMENTS
CRYOSPHERE > SNOW/ICE > SNOW/ICE CHEMISTRY
Data Set Progress
Distribution Media: Online
Fees: No fees
Role: TECHNICAL CONTACT
Email: ask at usgs.gov
U.S. Geological Survey 12201 Sunrise Valley Drive
Province or State: Virginia
Postal Code: 20192
Email: gpingers at usgs.gov
USGS Colorado Water Science Center Denver Federal Center, MS-415 Building 53
Province or State: CO
Postal Code: 80225
Ingersoll, G.P., Mast, M.A., Swank, J.M., and Campbell, C.D. (2011), Rocky Mountain snowpack physical and chemical data for selected sites, 2010, U.S. Geological Survey Data Series 570, 1-12, http://pubs.usgs.gov/ds/570/pdf/DS570.pdf
Ingersoll, G.P., Mast, M.A., Swank, J.M., and Campbell, C.D. (2010), Rocky Mountain snowpack physical and chemical data for selected sites, 2009, U.S. Geological Survey Data Series 498, 1-9, http://pubs.usgs.gov/ds/498/pdf/DS498.pdf
Ingersoll, G.P., Mast, M.A., Campbell, D.H., Clow, D.W., Nanus, L., and Turk, J.T. (2009), Rocky Mountain snowpack physical and chemical data for selected sites, 1993–2008, U.S. Geological Survey Data Series 369, 1-97, http://pubs.usgs.gov/ds/369/pdf/DS369.pdf
Ingersoll, George P., Mast, M. Alisa, Nanus, Leora, Handran, Heather H., Manthorne, David J., and Hultstrand, Douglas M. (2007), Rocky Mountain snowpack chemistry at selected sites, 2004, U.S. Geological Survey Open-File Report 2007–1045, 1-20, http://pubs.usgs.gov/of/2007/1045/pdf/OF07-1045_508.pdf
Ingersoll, G.P., Mast, M.A., Nanus, Leora, Manthorne, D.J., Handran, H.H., Hulstrand, D.M., and Winterringer, Jesse (2005), Rocky Mountain Snowpack Chemistry at Selected Sites, 2003, U.S. Geological Survey Open-File Report 2005-1332, 1-20, http://pubs.usgs.gov/of/2005/1332/pdf/ofr2005-1332.pdf
Ingersoll, G.P., Mast, M.A., Nanus, L., Manthorne, D.J., Clow, D.W., Handran, H.M., Winterringer, J.A., and Campbell, D.H. (2004), Rocky Mountain Snowpack Chemistry at Selected Sites, 2002, U.S. Geological Survey Open-File Report 2004-1027, 1-21, http://pubs.usgs.gov/of/2004/1027/pdf/508Book.pdf
Ingersoll, G.P., Mast, M.A., Clow, D.W., Nanus, L., Campbell, D.H., and Handran, H. (2003), Rocky Mountain Snowpack Chemistry at Selected Sites for 2001, U.S. Geological Survey Open-File Report 03-48, 1-17, http://pubs.usgs.gov/of/2003/ofr0348/pdf/508ofr03-48.pdf
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Creation and Review Dates
DIF Creation Date: 2005-11-30
Last DIF Revision Date: 2012-03-02