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Title
Japanese: 
English:Looking back into the history of floods in Japan using a newly developed long-term gridded precipitation dataset 
Author
Japanese: 鳩野 美佐子, 木口 雅司, 芳村 圭, 鼎 信次郎, 蔵治 光一郎, 沖 大幹.  
English: Misako Hatono, Masashi Kiguchi, Kei Yoshimura, Shinjiro Kanae, Koichiro Kuraji, Taikan Oki.  
Language English 
Journal/Book name
Japanese: 
English: 
Volume, Number, Page        
Published date Dec. 2022 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:AGU Fall Meeting 2022 
Conference site
Japanese:イリノイ州 シカゴ 
English:Chicago, IL 
Official URL https://agu.confex.com/agu/fm22/meetingapp.cgi/Paper/1085067
 
Abstract Japan is known for its frequent natural disasters such as floods and earthquakes, and various regions of Japan have been affected by large flooding even in recent years. Long-term high-resolution gridded precipitation datasets have been frequently utilized to understand the characteristics of various floods. Here, we introduce our newly developed 0.01-degree gridded precipitation data for Japan covering 1926 to 2020 (Hatono et al., Scientifc Data, 2022). We compiled various precipitation observation data from over 1,000 stations and applied a simple spatial interpolation method. Cross-validation analysis showed that over half of the validated stations showed an NSE of over 0.6 in each year. Preliminary investigations showed large differences in the precipitation characteristics of main channel and tributaries of Nuta River in Hiroshima prefecture when considering precipitation in the upstream area. We expect our dataset to be applied to various precipitation-related research, and to contribute to understanding the spatiotemporal characteristics of floods throughout Japan.

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