JaLCDOI 10.18926/ESR/52166
タイトル(別表記) A case study on the rainfall distribution over the Japan Islands associated with the approach of Ty0423 in late October (Comparison with that for Ty0418)
フルテキストURL esr_020_1_013_024_rev.pdf
著者 佐竹 愛| 加藤  内藏進| 盛 宣誠| 合田 泰弘| 池田 祥一郎| 塚本 修|
抄録 Rainfall distribution in the Japan Islands associated with the approach of Typhoon No.23 around 20 October 2004 (referred to Ty0423, hereafter) showed considerably different features from those in late summer of this year. The present study examined the detailed rainfall features around the Japan Islands brought by Ty0423 and the atmospheric processes based on the operational observation data by the Japan Meteorological Agency (JMA), comparing with those in association with Ty0418 around 7 September 2004. During the stage when Ty0423 was approaching or landing on the western part of the Japan Islands, the areal mean precipitation from Kyushu to Kanto District attained much larger than that for Ty0418, with wider extension of the area with the large amount of precipitation. It is interesting that, although the intense rainfall was observed only at the upstream side of the mountain range from Kyushu to Honshu District for Ty0418 except for the area near its center, strong rainfall with 10~30 mm/h persisted in wider regions from the western to the eastern part of the Japan Islands, resulting in the considerably large total rainfall for Ty0423. As for the case for Ty0423, the surface front with stable frontal surface was located just to the east of the Ty0423 center just before its landing at the Japan Islands. Thus, the huge moisture inflow mainly in the eastern region from the typhoon center seems to be redistributed widely over the Japan Islands area associated with the large-scale convergence around the stable frontal surface. In late October, the colder air associated with the high pressure system in the eastern Siberia can cover the northern part of the Japan Sea area as the seasonal march. Such basic field might be favorable for sustaining the synoptic-scale front just around the southern coast of the Japan Islands, even when the strong southerly wind invades associated with the typhoon approach there.
キーワード Ty0423 Ty0418 rainfall in Japan associated with a typhoon in mid-autumn effects of a typhoon on the synoptic climatology in Japan in October
備考 ※p.18第7図が左右逆であったのを修正(Figure of the left and the right in p.18 FIG.7 was supposed to reverse. This version was corrected.)
出版物タイトル Okayama University Earth Science Report
発行日 2013-12-27
20巻
1号
出版者 岡山大学理学部地球科学教室
出版者(別表記) Department of Earth Sciences, Faculty of Science, Okayama University
開始ページ 13
終了ページ 24
ISSN 1340-7414
NCID AN10506284
資料タイプ 紀要論文
言語 Japanese
著作権者 © 2013 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
査読 無し
NAID 120005394594
Sort Key 5
Eprints Journal Name esr
JaLCDOI 10.18926/ESR/49212
タイトル(別表記) A case study on persistent appearance of the ensemble of precipitation bands in the warm sector of the Baiu front in the western Japan around 19 June 2001
フルテキストURL esr_019_1_039_050.pdf
著者 合田 泰弘| 加藤 内藏進| 塚本 修|
抄録 A case study on persistent appearance of the ensemble of precipitation bands in the warm sector of the Baiu front in Kyushu District, the western part of Japan around 19 June 2001 was performed based on the operational observational data. Around 00UTC (09JST) 19 June when the Baiu front on the surface weather map was still located about a few 100kms to the north of Kyushu, the number and the total area of the meso-β or γ-scale line-shaped precipitation bands increased around Kyushu rapidly. These precipitation bands had been sustained there and gradually gathered each other to change into the Baiu frontal precipitation zone extending from the northern Kyushu to Seto-Naikai (Seto Inland Sea) around 09UTC (18JST) 19 June (the intense rainfall zone was still located in the warm sector of the Baiu front). Until ~09UTC (18JST) 19 June, the moist air flow with the latently unstable stratification had been sustained around Kyushu corresponding to the low-level southerly wind toward the surface Baiu front to the north of Kyushu. This large-scale situation would contribute greatly to the maintenance of the ensemble of the line-shaped precipitation bands in the warm sector of the Baiu front.
キーワード ensemble of line-shaped precipitation bands precipitation in the warm sector of the Baiu front Baiu fronal rainfall
出版物タイトル Okayama University Earth Science Report
発行日 2012-12-26
19巻
1号
出版者 岡山大学理学部地球科学教室
出版者(別表記) Department of Earth Sciences, Faculty of Science, Okayama University
開始ページ 39
終了ページ 50
ISSN 1340-7414
NCID AN10506284
資料タイプ 紀要論文
言語 Japanese
著作権者 © 2012 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
査読 無し
NAID 120005232330
Sort Key 8
Eprints Journal Name esr