HR: 0830h
AN: C41B-0970    [PDF]
TI: Time Series of Snow Covered Area for Hydrologic Response Units of the Tom River Basin, Russia, from Satellite Imagery, 1980-1985
AU: * Saini, A
EM: adityas@eng.umd.edu
AF: University of Maryland, Civil \& Environmental Engineering 1173 Glenn L. Martin Hall, College Park, MD 20742 United States
AU: Brubaker, K L
EM: klbrubak@eng.umd.edu
AF: University of Maryland, Civil \& Environmental Engineering 1173 Glenn L. Martin Hall, College Park, MD 20742 United States
AU: Jasinski, M F
EM: mjasinsk@hsb.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 974, Greenbelt, MD 20771 United States
AU: Stoll, J
EM: jstoll@lshp.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 974, Greenbelt, MD 20771 United States
AB: The seasonal snowpack dynamics of the Eurasian mountains and Siberian plains play a critical role in the freshwater fluxes of northern rivers into the Arctic Ocean. This study is part of a larger project whose goal is to analyze the freshwater discharge of the Ob' River (Russia) to the Arctic, using satellite remote sensing and hydrologic modeling on a daily time step. Using AVHRR Polar Pathfinder imagery obtained from the National Snow and Ice Data Center (NSIDC), time series of snow cover (accumulation through depletion) are created for hydrologic response units (HRUs) of the Tom River, a tributary of the Ob'. Sub-watersheds and HRUs of the Tom watershed are delineated using digital elevation and land use/land cover data within a Geographical Information System. All digital data are reprojected to the equal area azimuthal EASE-Grid of the NSIDC imagery. Daily remotely-sensed snow images for 1980 to 1985 are overlaid on the HRUs to give time series of percent snow cover for each HRU. These time series are compared with model-generated HRU snow cover, allowing us to evaluate the performance of the model's snow sub-routines in a spatially distributed manner. This study will contribute to better modeling and understanding of snow accumulation and depletion processes, which serve as important and climate-sensitive controls on the fresh water fluxes of Arctic river basins.
DE: 1640 Remote sensing
DE: 1863 Snow and ice (1827)
DE: 9315 Arctic region
DE: 9320 Asia
SC: Cryosphere [C]
MN: 2003 Fall Meeting