Washita '92 was a cooperative experiment between NASA, USDA, several other government agencies and universities to test the usefulness of remotely sensed data in hydrologic modeling. The primary goal during the experiment was to collect a time series of spatially distributed hydrologic data, focusing on soil moisture and evaporative fluxes, using both conventional and remotely sensed methods. Other specific goals during the experiment included the testing and verification of several new remote sensing devices and the development of data bases for target-sensor interaction algorithms.
The experiment was conducted on the Little Washita Watershed which is located southwest of Chickasha, Oklahoma. This is a research watershed that is currently managed by the USDA ARS Grazinglands Research Lab in El Reno, OK. NASA provided two aircraft; the C-130 and the DC-8. The C-130 carried the ESTAR L band microwave radiometer, the 37 GHz microwave radiometer, the laser profiler, the NS001 multispectral scanner, the thermal infrared multispectral scanner and cameras. The DC-8 flew the three frequency synthetic aperture radar. Of these, the only instrument that did not yield useful data was the 37 GHz microwave radiometer.
Numerous studies have been conducted and published utilizing these data; see (REFERENCE LIST) . This site was developed to compile as much of the background and observed data from the experiment as possible. Some of the data sets not included may be provided at a later time.