HR: 12:05h
AN: H52B-08    [Abstracts]
TI: Dynamic and Thermodynamic Effects on the Asian Summer Monsoon Under the Global Warming
AU: * Dairaku, K
EM: dairaku@bosai.go.jp
AF: National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Iba 305-0006 Japan
AU: Emori, S
EM: emori@nies.go.jp
AF: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Iba 305-8506 Japan
AB: Results from time-slice ensemble experiments with a T106 AGCM were used to investigate possible changes in the South Asian summer monsoon driven by climate change. Model results suggested more warming over land than over the ocean, a northward shift of the lower tropospheric monsoon circulation, and an increase in mean precipitation during the Asian summer monsoon under global warming conditions. The number of extreme daily precipitation events increased significantly. Increases in mean and extreme precipitation were attributed to greater atmospheric moisture content (thermodynamic change). In contrast, dynamic change rather limited the intensification of mean precipitation. Enhanced extreme precipitation over land in South Asia arose from dynamical changes rather than thermodynamic changes.
DE: 1626 Global climate models (3337, 4928)
DE: 1630 Impacts of global change (1225)
DE: 1655 Water cycles (1836)
DE: 1800 HYDROLOGY
DE: 1807 Climate impacts
SC: Hydrology [H]
MN: Fall Meeting 2005