Snow mapping technique at subpixel level for small basins

TitleSnow mapping technique at subpixel level for small basins
Publication TypeConference Proceedings
Year of Publication2000
AuthorsGomez-Landesa E., Rango A.
Conference NameProceedings of the International Geoscience and Remote Sensing Symposium
Date PublishedJuly 24-28, 2000
Conference LocationHonolulu, HI
ARIS Log Number119237
Keywordsforecasting, small basins, snow mapping, SRM, subpixel level
AbstractSnow cover mapping is often carried out using optical satellite imagery. In this paper we address the problem of snow mapping of small basins with areas only 10 times the spatical resolution of the sensor using subpixel analysis. This technique is currently being used in several basins in the Spanish Pyrenees and has been developed as part of a snow cover mapping and snowmelt runoff forecasting system which uses snow cover as an input for the Snowmelt Runoff Model (SRM). Spanish hydropower companies receive the snowmelt forecasts and use them as criteria in decision making for reservoir management. The accuracy of the forecasts strongly depends on the snow cover accuracy.