FORMATION AND ENVIRONMENT OF A LINE-SHAPED RAINFALL SYSTEM OBSERVED IN NIIGATA-FUKUSHIMA HEAVY RAINFALL IN JULY 2011
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- WADA Takuya
- Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University
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- YAMADA Tomohito
- Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University
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- SUSENO Dwi Prabowo Yuga
- Division of Field Engineering for the Environment Graduate School of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- 2011年7月新潟・福島豪雨時における線状降水帯の形状特性・環境場に関する考察
Abstract
Meteorological characteristics of the formation and environment of the Niigata-Fukushima heavy rainfall on 28~30 July 2011 were studied. Line-shaped rainfall systems were observed by using synthetic radar and Xband MP radar on 29 July at 09~17 and on 30 July at 00~04. The purpose of this study is to classify these events and to reveal the reason why these occur and stagnate. It was found that the former event can be classified as Back Building type while the latter can be classified as Back Building composite type. The development environments were focused by the convergence, relative humidity, wind and temperature by using the Japan Meteorological Agency GPV mesoscale model dataset. Results indicate that convergence area, flow of high-humidity air at 950hpa and incursion of dry-low-temperature air generated the event on 29 July at 09~17. The event on 30 July at 00~04 was generated by the effect of cold air at 400hpa which flowed into high-humidity region.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 68 (4), I_397-I_402, 2012
Japan Society of Civil Engineers
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Details
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- CRID
- 1390282680328450560
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- NII Article ID
- 130004557985
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- ISSN
- 2185467X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed