| 降雨の標高依存特性を導入したTRMM/PRによる時間・空間平均降雨量の推定. DEVELOPMENT OF A METHOD OF ESTIMATING SPECIO-TEMPORAL AVERAGED RAINFALL WITH TRMM/PR INFORMATION USING A DEPENDENCY OF RAINFALL ON TOPOGRAPHIC ELEVATION | |||||||||||||
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| 研究概要:A Method of estimating specio-temporal averaged rainfall with TRMM observations is developed. A point of the method is that a dependency of rainfall distribution on topographic elevation is taken into consideration. Also both analytical and statistical evaluations of accuracy of the estimates are carried out based on stochastic specio-temporal structure of rain field and actual applications of the method into radar-observed rainfall distributions during 43 monthly periods, respectively. As results, the analytical evaluation almost agree with statistical one, and introducing the dependency of topographic elevation improves the accuracy of estimation of monthly rainfall averaged over a circle region with radius of 120km. | |||||||||||||
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