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  1. 防災科研関係論文

Internal structures of migratory cloud systems with diurnal cycle over Sumatera Island during CPEA-I campaign

https://nied-repo.bosai.go.jp/records/5539
https://nied-repo.bosai.go.jp/records/5539
d223bffc-dd53-44e1-bea5-c8e33eff520d
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Internal structures of migratory cloud systems with diurnal cycle over Sumatera Island during CPEA-I campaign
言語
言語 eng
著者 Namiko Sakurai

× Namiko Sakurai

en Namiko Sakurai

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Masayuki Kawashima

× Masayuki Kawashima

en Masayuki Kawashima

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Yasushi Fujiyoshi

× Yasushi Fujiyoshi

en Yasushi Fujiyoshi

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Hiroyuki Hashiguchi

× Hiroyuki Hashiguchi

en Hiroyuki Hashiguchi

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Toyoshi Shimomai

× Toyoshi Shimomai

en Toyoshi Shimomai

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Shuichi Mori

× Shuichi Mori

en Shuichi Mori

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Jun Ichi Hamada

× Jun Ichi Hamada

en Jun Ichi Hamada

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Fumie Murata

× Fumie Murata

en Fumie Murata

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Manabu D. Yamanaka

× Manabu D. Yamanaka

en Manabu D. Yamanaka

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Yudi Iman Tauhid

× Yudi Iman Tauhid

en Yudi Iman Tauhid

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Tien Sribimawati

× Tien Sribimawati

en Tien Sribimawati

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Budi Suhardi

× Budi Suhardi

en Budi Suhardi

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抄録
内容記述タイプ Other
内容記述 There is a diurnal cycle of systematic cloud migration over Sumatera Island, i.e., cloud systems developing in the mountainous area in the afternoon migrate westward and/or eastward for several hundreds of kilometers (about 500 km) from night to morning. The regional characteristics and internal structure of migratory cloud systems with a diurnal cycle over Sumatera Island during CPEA-I were examined using data from an X-band Doppler radar (XDR), a VHF wind profiler (Equatorial Atmosphere Radar (EAR)), rawinsondes, and Geostationary Operational Environmental Satellite (GOES9). During CPEA-I, the cloud system had a horizontal scale of several hundred kilometers and migrated both westward and eastward over nearly all of Sumatera Island except for the southernmost part. The cloud system migrated only westward over southernmost Sumatera Island during CPEA-I. From a case study on April 17 and 18, 2004, precipitation systems with horizontal scales of several tens of kilometers were observed in a cloud system by XDR, and they migrated in a direction similar to that of the cloud system at a speed of about 3 m s , which roughly corresponded to the wind direction and speed in the lower troposphere. Convective precipitation was observed mainly in the forward region of the precipitation systems, and stratiform precipitation was observed in the rearward region. The convective precipitation successively generated new convective cells in front of old convective cells. These results suggest that the migratory mechanism of the precipitation systems is self-replication of convective cells and the advection of background wind in the lower troposphere. c 2009, Meteorological Society of Japan. -1
言語 en
書誌情報 en : Journal of the Meteorological Society of Japan

巻 87, 号 1, p. 157-170, 発行日 2009
ISSN
収録物識別子タイプ ISSN
収録物識別子 0026-1165
DOI
関連識別子 10.2151/jmsj.87.157
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