Remotely sensed soil moisture input to a hydrologic modelThe possibility of using detailed spatial soil moisture maps as input to a runoff model was investigated. The water balance of a small drainage basin was simulated using a simple storage model. Aircraft microwave measurements of soil moisture were used to construct two-dimensional maps of the spatial distribution of the soil moisture. Data from overflights on different dates provided the temporal changes resulting from soil drainage and evapotranspiration. The study site and data collection are described, and the soil measurement data are given. The model selection is discussed, and the simulation results are summarized. It is concluded that a time series of soil moisture is a valuable new type of data for verifying model performance and for updating and correcting simulated streamflow.
Document ID
19910031252
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Engman, E. T. (Department of Agriculture Beltsville, MD, United States)
Kustas, W. P. (USDA, Hydrology Laboratory, Beltsville MD, United States)
Wang, J. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)