Journal Article Assimilating All-Sky Himawari-8 Satellite Infrared Radiances: A Case of Typhoon Soudelor (2015)

Honda, Takumi  ,  Miyoshi, Takemasa  ,  Lien, Guo-Yuan  ,  Nishizawa, Seiya  ,  Yoshida, Ryuji  ,  Adachi, Sachiho A.  ,  Terasaki, Koji  ,  Okamoto, Kozo  ,  Tomita, Hirofumi  ,  Bessho, Kotaro

146 ( 1 )  , pp.213 - 229 , 2018-01-17 , American Meteorological Society
Japan’s new geostationary satellite Himawari-8, the first of a series of the third-generation geostationary meteorological satellites includingGOES-16, has been operational since July 2015. Himawari-8 produces highresolution observations with 16 frequency bands every 10 min for full disk, and every 2.5 min for local regions. This study aims to assimilate all-sky every-10-min infrared (IR) radiances from Himawari-8 with a regional numerical weather prediction model and to investigate its impact on real-world tropical cyclone (TC) analyses and forecasts for the first time. The results show that the assimilation of Himawari-8 IR radiances improves the analyzed TC structure in both inner-core and outer-rainband regions. The TC intensity forecasts are also improved due to Himawari-8 data because of the improved TC structure analysis.

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