3:30 PM - 3:45 PM
*Masafumi Hirose1 (1.Meijo University)
[E] Oral
A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment
Mon. May 23, 2022 3:30 PM - 5:00 PM 101 (International Conference Hall, Makuhari Messe)
convener:Toru Terao(Faculty of Education, Kagawa University), convener:Shinjiro Kanae(School of Environment and Society, Tokyo Institute of Technology), Jun Matsumoto(Deaprtment of Geography, Tokyo Metropolitan University), Chairperson:Masafumi Hirose(Meijo University)
Asian monsoon system consists of variablities in wide range of scales ranging from diurnal to decadal. The diurnal variability is common in Asian region which is related with the surface heating due to insolation. Various types of meso-scale to synoptic disturbances such as meso-scale convective systems, monsoon depressions and tropical cyclones account for major part of the precipitation in this region. Intraseasonal variations themselves have multiple time scales such as quasi bi-weekly oscillatiion (QBW) and the boreal summer intraseasonal oscillation (BSISO). We have diverse types of seasonalities in different regions in Asia. Interannual variabilities, such as ENSO-monsoon and climate projections, are another intrinsic time scales of Asian monsoon that attract researchers.
These variabilities with specific spatio-temporal scales have mechanisms that are distinct from other types of variabilities. Our first target is to clarify the mechanisms of these specific variabilities. On the other hand, these multiple scale variabilities have strong interactions with each other. For example, diurnal variability interacts with all other variabilities with longer time scales. It has been shown that intraseasonal variabilities of precipitation highly depend on modulation of the activity of synoptic disturbances.
Especially variabilities with time scales longer than weeks have strong interaction with boundary conditions such as land surface, cryosphere, and ocean surface with 'memories' longer than weeks. Especially, highly non-linear land surface-convection coupling controls sub-seasonal to seasonal (S2S) monsoon variabilities and limits our predictability.
One of the focus of Asian precipitation experiment (AsiaPEX) is the multiple scale interaction in Asian monsoon system. We will exchange new development of studies on different time scales of variabilities and their interactions, and discuss on future development of our research activities.
3:30 PM - 3:45 PM
*Masafumi Hirose1 (1.Meijo University)
3:45 PM - 4:00 PM
*Suyeon Moon1,2, Kyung-Ja Ha1,2,3 (1.Department of Climate System, Pusan National University, Busan, South Korea, 2.Center for Climate Physics, Institute for Basic Science, Busan, South Korea, 3.BK21 School of Earth and Environmental Systems, Pusan National University, Busan, South Korea)
4:00 PM - 4:15 PM
*Hiroshi G. Takahashi1, Shiori Sugimoto2, Tomonori Sato3 (1.Department of Geography, Tokyo Metropolitan University, 2.JAMSTEC, 3.Hokkaido University)
4:15 PM - 4:30 PM
*Shiori Sugimoto1, Yongkang Xue2, Tomonori Sato3, Hiroshi G. Takahashi4 (1.Japan Agency for Marine-Earth Science and Technology, 2.University of California – Los Angeles, 3.Hokkaido University, 4.Tokyo Metropolitan University)
4:30 PM - 4:45 PM
*Hatsuki Fujinami1, Hidetaka Hirata3, Koji Fujita2, Hironari Kanamori1, Yota Sato2, Masaya Kato1, Rijan B. Kayastha4 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Graduate School of Environmental Studies, Nagoya University, 3.Faculty of Data Science, Rissho University, 4.School of Science, Kathmandu University)
4:45 PM - 5:00 PM
*Kiguchi Masashi1, Hiroaki Shirakawa2, Weerakaset Suanpaga3, Taichi Tebakari4, Sompratana Ritphring3, Taikan Oki1, Thanya Kiatiwat3 (1.The University of Tokyo, 2.Nagoya University, 3.Kasetsart University, 4.Chuo University)
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