TY - Generic T1 - Application of SAR snowcover mapping to hydrological modeling of snowmelt runoff in Southern Ontario T2 - 61st Annual Western Snow Conference Y1 - 1993 A1 - Seglenenieks, F. A1 - Soulis, E.D. A1 - Kouwen, N. A1 - Donald, J.R. KW - Modeling, Radar, Snow cover AB - In this experiment WATFLOOD, a distributed hydrologic model, was set up for the 1991 spring snowmelt event on the Grand River watershed to investigate the possibility of using airborne nadir C-band Synthetic Aperture Radar (SAR) imagery to update the model by providing snow covered area (SCA) information. WATFLOOD parameters were first derived using only atmospheric and ground data, the model was then run again to derive parameters using the SAR imagery to update the model. The results showed that model appeared to simulate the river flow better when updated using the SAR imagery. It was concluded that the present WATFLOOD optimization, which deals solely with river flows, allows for unrealistic values for snowmelt. This can be corrected by separate optimization of snowmelt parameters to known snow cover characteristics and of snowpack hydraulic characteristics to streamflow. JF - 61st Annual Western Snow Conference T3 - Proceedings of the 61st Annual Western Snow Conference PB - Western Snow Conference CY - Quebec City, Quebec UR - sites/westernsnowconference.org/PDFs/1993Seglenenieks.pdf ER -