複数の衛星搭載マイクロ波／赤外放射計の複合による「世界の雨分布速報」システムの構築とその利用

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/09/01

タイトル(英語): Development and Utilization of "JAXA Global Rainfall Watch" System based on Combined Microwave and Infrared Radiometers Aboard Satellites

著者名: 可知　美佐子（(独) 宇宙航空研究開発機構），久保田　拓志（(独) 宇宙航空研究開発機構），牛尾　知雄（大阪大学），重　尚一（京都大学），木田　智史（京都大学），青梨　和正（気象研究所），岡本　謙一（鳥取環境大学），沖　理子（(独) 宇宙航空研究開発機構）

著者名(英語): Misako Kachi (Japan Aerospace Exploration Agency), Takuji Kubota (Japan Aerospace Exploration Agency), Tomoo Ushio (Osaka University), Shoichi Shige (Kyoto University), Satoshi Kida (Kyoto University), Kazumasa Aonashi (Meteorological Research Institute), Ken'ichi Okamoto (Tottori University of Environmental Studies), Riko Oki (Japan Aerospace Exploration Agency)

キーワード: 全球降水マップ，準リアルタイム，受動マイクロ波センサ，赤外放射計，衛星　　global rainfall map，near-real-time，passive microwave sensor，infrared radiometer，satellite

要約(英語): As accuracy of satellite precipitation estimates improves and observation frequency increases, the applicability of those data to a more variety of societal benefits as well as climate studies is expected to enhance. To meet those users' needs that higher temporal resolution is desired with near-real-time availability, we are developing and operating the “JAXA Global Rainfall Watch” system, which produces hourly global rainfall map data in 0.1 degree grid resolution, and disseminates it four hours after observation. The algorithms are based on the achievement of the Global Satellite Mapping for Precipitation (GSMaP) project, which combined observation data from microwave and infrared radiometers aboard multiple satellites. The interests of GSMaP users cover broad fields and world wide. Several activities to apply GSMaP data to some flood warning systems are underway. Validation with Japanese Radar-AMeDAS rainfall analysis data for 2009 shows correlation coefficients higher than 0.5 during rainy season, but lower values around 0.3 or 0.4 during winter season with less rainfall. GSMaP is a proto-type for the Global Precipitation Measurement (GPM) mission in 2013, and challenges and possibilities of new application are explored.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.9 （2011） 特集：自然災害軽減のための電磁界技術

本誌掲載ページ: 729-737 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/9/131_9_729/_article/-char/ja/