The Nimbus 5 ESMR (Electrically Scanned Microwave Radiometer) and Its Application to Storm Detection.
Final rept. 14 May 72-14 Jul 73,
EARTH SATELLITE CORP WASHINGTON D C
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Nimbus 5 ESMR computer programs developed by NADA have been modified to run on an IBM 36065 computer and to accept the format of the Nimbus 5 Stacked Experiment Tape SET provided by NASA to the Environmental Prediction Facility. The various ESMR programs available are briefly described and sample ESMR brightness temperature TB map outputs are presented. The microwave properties of the atmosphere are briefly reviewed. A Nimbus 5 ESMR brightness temperature map of a storm area off the Florida coast on 12 January 1973 is compared with concurrent radar observations. A 5 level atmospheric model was used to calculate atmospheric brightness temperatures under conditions similar to observations. Differences between observed and calculated TBs are explained in terms of inaccurate description of actual atmospheric conditions and the coarseness of our atmospheric model. Modified author abstract