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United States Department of Agriculture

Agricultural Research Service

Washita '92
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Washita '92 Field Experiment

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.

Data Report 
Aircraft Data Sets 
Multispectral Data 
Gravimetric Data Sets 
Climate Data


Last Modified: 11/29/2016
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