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Application of Differential Inversion to DMSP Microwave Sounder Data
Annual rept. 1 Aug 1992-31 Jul 1993
BOSTON UNIV MA DEPT OF ELECTRICAL COMPUTER AND SYSTEMS ENGINEERING
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Differential Inversion DI is a novel approach to the solution of the atmospheric temperature sounding problem which was developed by Dr J.I.F. King of the Air Forces Phillips Laboratory. Before the present research, DI has been applied only to infrared radiance data sets, such as from TOVSHIRS. In this report I describe the progress made in the first year of a research program to apply DI to microwave radiance data from the SSMT sounder on the DMSP satellites. The ultimate objectives of this research are to establish effective DI sounding algorithms for the microwave spectral region and to extend DI in directions which increase its utility as a practical sounding algorithm. DI has many attractive features in this application, including its close coupling to the physical formulation of the temperature sounding problem, its freedom from the necessity of using an a priori temperature profile, and its high level of computational efficiency. At present, we have understood the practical difficulties, characteristic of temperature sounding in the microwave spectral region as these apply to DI, and have produced software yielding temperature profiles of a convincing meteorological character.
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