HR: 0800h
AN: C21B-0453    [Abstracts]
TI: Development and Evaluation of Dimensionless Snowmelt Depletion Curves Using MODIS- Derived SCA
AU: * Homan, J W
EM: joelhoman@boisestate.edu
AF: Boise State University, Department of Geosciences 1910 University Drive, Boise, ID 83725, United States
AU: McNamara, J P
EM: jmcnamar@boisestate.edu
AF: Boise State University, Department of Geosciences 1910 University Drive, Boise, ID 83725, United States
AU: Glenn, N F
EM: glennanc@isu.edu
AF: Idaho State University, Boise Center Aerospace Laboratory Idaho Water Center 322 E. Front Street,Suite 240, Boise, ID 83702, United States
AU: Luce, C H
EM: cluce@fs.fed.us
AF: Rocky Mountain Research Station, Boise Aquatic Sciences Lab 322 East Front Street Suite 401, Boise, ID 83702, United States
AB: Snow accumulation and melt parameterization at a watershed or mountain-front scale is important for improvements in distributed snowmelt modeling. Dimensionless snowmelt depletion curves, which relate normalized decreases in SCA against normalized decreases in SWE, are an effective way to scale-up snowmelt model. This study involved the development of dimensionless snowmelt depletion curves to parameterize snowpack variability throughout the snowmelt season within specific 500 x 500 m areas (pixels) in the Dry Creek Experimental Watershed in southwestern Idaho and within the Imnaviat Creek Watershed in northern Alaska. MODIS derived SCA was incorporated into the development of depletion curves offering exciting advancements involving the obtainment of SWE at relevant scales. Comparisons of depletion curve parameterizations against ground-based measurements illustrate remarkable similarity. Dimensionless snowmelt depletion curves developed with MODIS-derived SCA offers improvements to the present day methods for prediction snowmelt and therefore snowmelt generated runoff.
DE: 0736 Snow (1827, 1863)
DE: 0740 Snowmelt
DE: 0758 Remote sensing
SC: Cryosphere [C]
MN: 2007 Fall Meeting