HR: 11:20h
AN: H21G-05    [PDF]
TI: Use of Satellite Remote Sensing in Prediction of Ungaged Basins
AU: * Lakshmi, V
EM: venkat-lakshmi@sc.edu
AF: University of South Carolina, Department of Geological Sciences, 701 Sumter Street, Columbia, SC 29208 United States
AB: Ungaged basins pose a challenge to hydrological studies as they lack both calibration and validation data for the use of land surface models. Therefore, one has to use the satellite data that is available which describes the aspects/attributes of the basin from a hydrological perspective. Soil moisture is routinely mapped by the Advanced Microwave Scanning Radiometer (AMSR). Vegetation is characterized by MODIS (Moderate Resolution Imaging Spectroradiometer) and surface temperature is estimated using AIRS (Advanced Infra-Red Sounder) as well as MODIS. Precipitation is measured (in the tropical regions) from the TRMM (Tropical Rainfall Measuring Mission) Microwave Imager (TMI) with the Global Precipitation Mission (GPM) due to be launched in a few years. The synergistic use of these data sets along with hydrological models would help us to (a) input precipitation and vegetation information into a hydrological model and calculate the soil moisture and surface temperature using the water and energy balance equations (b) the measured soil moisture and surface temperature can be used in two ways (i) to calibrate certain model parameters (ii) to verify the output of the model through validation. The overland runoff from the hydrological model would be routed in the stream channel network (obtained from the Digital Elevation Data) to obtain the streamflow at the catchment outlet. This would help in estimation of the water resources for the catchment.
DE: 1833 Hydroclimatology
DE: 1836 Hydrologic budget (1655)
DE: 1848 Networks
DE: 1866 Soil moisture
SC: Hydrology [H]
MN: 2003 Fall Meeting