HR: 09:15h
AN: A41F-04    [Abstracts]
TI: Baiu frontal activity in the global warming climate simulated by a non-hydrostatic regional model with a horizontal grid of 5 km
AU: * Yoshizaki, M
EM: myoshiza@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Muroi, C
EM: cmuroi@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kanada, S
EM: skanada@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, In MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Wakazuki, Y
EM: ywakazki@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, In MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Yasunaga, K
EM: kyasunag@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, In MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Hashimoto, A
EM: ahashimo@mri-jma.go.jp
AF: Advanced Earth Science and Technology Organization, In MRI, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kato, T
EM: tkato@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kurihara, K
EM: kkurihar@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Noda, A
EM: noda@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AU: Kusunoki, S
EM: skusunok@mri-jma.go.jp
AF: Meteorological Research Institute, 1-1, Nagamine, Tsukuba, 305-0052 Japan
AB: The Baiu front in East Asia in the global warming climate as well as that in the present one, is studied using outputs of a global climate model with a horizontal grid size of 20km (GCM) and a non-hydrostatic regional model with a horizontal grid size of 5 km (NHM). The GCM was first run in both present and global warming climates for ten years. Then the NHM was run in June and July for ten years in a one-way nesting by using the GCM. To reduce the horizontal phase differences of propagating disturbances between two models, we adopted a spectral boundary coupling method, in which large- and small- scale modes are combined from the outputs of GCM and NHM, respectively. In the global warming climate, changes of the Baiu front are remarkable in July. The Baiu front is likely to stay over the southern Japan around the latitudes of 30 N - 32 N, and does not move northward. Thus, the activity of the Baiu front lasts longer, and the precipitation increases in the southern Japan. Meanwhile, the precipitation in the northern Japan and Korean Peninsula becomes weak. No end of the Baiu season is also often seen. The frequency of occurrence of heavy rainfall increases over the Japan Islands.
DE: 0644 Numerical methods
DE: 1610 Atmosphere (0315, 0325)
DE: 1620 Climate dynamics (3309)
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly