Combining GIS and GPS to Improve Our Understanding of the Spatial Distribution of Snow Water Equivalence Todd Ackerman Todd Ackerman Tyler Erickson Tyler Erickson Mark W. Williams Mark W. Williams Institute of Arctic and Institute of Arctic and Alpine Research Alpine Research University of Colorado University of Colorado Boulder, Colorado Boulder, Colorado
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Combining GIS and GPS to Improve Our Understanding of the Spatial Distribution of Snow Water Equivalence Todd Ackerman Tyler Erickson Mark W. Williams.
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Combining GIS and GPS to Improve Our Understanding of the
Institute of Arctic and Alpine ResearchInstitute of Arctic and Alpine ResearchUniversity of ColoradoUniversity of Colorado
Boulder, ColoradoBoulder, Colorado
Overview
Research goalsResearch goals Site descriptionSite description Data collectionData collection AnalysisAnalysis
Why study snow?
75% of annual water supply in the western US75% of annual water supply in the western US Catastrophic floodingCatastrophic flooding
Problems in Snow Hydrology
In western US, SWE is measured once every In western US, SWE is measured once every 1,800 square miles1,800 square miles
Scaling: point measurements of SWE to Scaling: point measurements of SWE to regional and global scalesregional and global scales
Research Goals
Detailed data set for snow hydrologyDetailed data set for snow hydrology Improvement of methods for estimating SWE Improvement of methods for estimating SWE
in alpine basinsin alpine basins Relationship of SWE to landscape typeRelationship of SWE to landscape type
GIS
PlatformsPlatforms ArcInfo 7.0.2 Workstation for SolarisArcInfo 7.0.2 Workstation for Solaris ArcInfo 8.1 Desktop and Workstation for ArcInfo 8.1 Desktop and Workstation for
GIS technology allows us to conduct better GIS technology allows us to conduct better snow surveys, and to analyze the resultssnow surveys, and to analyze the results
GPS: lighter, cheaper, happierGPS: lighter, cheaper, happier Kriging can be used to scale up the point Kriging can be used to scale up the point
measurement, but is currently a black box measurement, but is currently a black box operation.operation.
Acknowledgements
Students, field staff (especially Tim Bardsley), Matt Students, field staff (especially Tim Bardsley), Matt Tomaszewski, and volunteers who have helped with the Tomaszewski, and volunteers who have helped with the snow surveys over the years.snow surveys over the years.
NSF EAR-9526875 (Hydrology)NSF EAR-9526875 (Hydrology) Army Research Office grant DAAH04-96-1-0033Army Research Office grant DAAH04-96-1-0033 NASA-EOSNASA-EOS Mountain Research Station of INSTAAR andMountain Research Station of INSTAAR and
CU-BoulderCU-Boulder Ongoing maintenance and data access is funded by the Ongoing maintenance and data access is funded by the
NSF grants DEB 92-11776 and DEB 98-10218NSF grants DEB 92-11776 and DEB 98-10218