研究者情報 | 神奈川大学

オオイズミ　ミツオ Ohizumi Mitsuo 大泉　三津夫所属神奈川大学理学部理学科職種教授
言語種別	英語
発行・発表の年月	2012/04
形態種別	学術雑誌
査読	査読あり
標題	Improved Performance of Simulated Japanese Climate with a Multi-Model Ensemble
執筆形態	共著
掲載誌名	Journal of the Meteorological Society of Japan
掲載区分	国外
出版社・発行元	Meteorological Society of Japan
巻・号・頁	90(2),pp.235-254
担当範囲	Preparing boundary and initial conditions of NHRCM from JRA-25, then carring out model run and making data set
著者・共著者	Ishizaki.N, I.Takayabu, M.Oh'izum, H.Sasaki, K.Dairaku, S.Iizuka, F.Kimura, H.Kusaka, S. A.Adachi, K.Kurihara, K.Murazaki and K.Tanaka
概要	Downscaling products for Japanese climate were analyzed using five regional climate models (RCMs) with horizontal meshsize of 20 km with boundary conditions given from JRA-25 reanalysis. The RCMs successfully reproduced the temporal variations and geographic distribution of temperature and precipitation. Skill scores for the surface temperature were improved by the downscaling. The JRA-25 underestimated the precipitation amount for summer and winter seasons, and the RCMs reduced the error, especially in winter. The RCMs showed common features, such as a warm bias in the areas with a monthly-mean temperature lower than the freezing point, an overestimation of weak rainy days, and an underestimation of heavy rainy days. The comparison among five RCMs suggests that the warm bias is due to the lack of model resolution and the precipitation bias is related to the convective parameterization.
researchmap用URL	https://www.jstage.jst.go.jp/article/jmsj/90/2/90_2012-206/_article