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[B-1.5 Study on the Evaluation of Regional Scale Climate Change (Final Report)]

[Contact Person]

Seita Emori
Research Scientist, Atmospheric Physics Section
Atmospheric Environment Division
National Institute for Environmental Studies
Environment Agency
Onogawa 16-2, Tsukuba, Ibaraki, 305-0053 Japan
Phone: +81-298-50-2498, Fax: +81-298-51-4732
E-mail: emori@nies.go.jp

[Total Budget for FY1997-FY1999]

26,817,000 Yen (FY1999; 9,339,000 Yen)

[Abstract]

In order to project the regional scale climate change over the east Asia, a regional climate model is developed. A preliminary year-long test run of the model revealed that the model failed to simulate the precipitation distribution in the Baiu-season (early summer). To solve this problem, numerical experiments using the model are performed to understand the formation mechanism of the Baiu, while a systematic sensitivity study on cumulus convection schemes is performed to understand the behavior of the schemes With the results of these studies, the model is improved so that it can realistically represent the regional climate over the east Asia including the precipitation distribution in the Baiu-season. A preliminary climate change experiment using this model is also conducted and its potential effectiveness is discussed.

[Key Words]

Regional Climate Model, East Asia, Precipitation Distribution, Baiu-Season, Cumulus Convection