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Title
Japanese:仮想観測シミュレーションとOSSEを組合せた小型マイクロ波衛星群データ同化による短期降水予測可能性と要求観測性能の評価法の提案 
English:Virtual Observation Simulation and OSSE for Evaluation of Observation Performance and Rainfall Prediction Accuracy by Assimilating Small Microwave Satellite Constellation 
Author
Japanese: 瀬戸 里枝, 鼎 信次郎.  
English: Rie Seto, Shinjiro Kanae.  
Language Japanese 
Journal/Book name
Japanese:土木学会論文集B1（水工学） 
English:Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 
Volume, Number, Page Vol. 78    No. 2    p. I511-I516
Published date Nov. 2022 
Publisher
Japanese:公益社団法人 土木学会 
English:Japan Society of Civil Engineers 
Conference name
Japanese:第67回水工学講演会 
English: 
Conference site
Japanese:愛媛県松山市 
English: 
Official URL https://www.jstage.jst.go.jp/article/jscejhe/78/2/78_I_511/_article/-char/ja/
 
DOI https://doi.org/10.2208/jscejhe.78.2_I_511
Abstract  Small satellite constellation (SSC) technology has been evolving rapidly and a project of SSC which carries passive microwave (PM) sensors for earth observation is now being planned. Toward application of such new technology to hydrometeorology in near future, this study proposes a new validation method of local- and river-basin-scale rainfall prediction performance assimilating virtual but realistic SSC-PM measurements by combining virtual observation simulation and observing system simulation experiment (OSSE). Results of application of the proposed method showed that frequent assimilation of SSC-PM observations has a potential to remarkably improve short-term rainfall prediction. Also, changes in frequency and time step of observations depending on SSC structure have a large impact on rainfall prediction accuracy.

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