Study on determination of rain or snow in a stratiformed precipitating system associated with an extratropical cyclone off the south coast of Japan in winter season

2013 Fiscal Year Final Research Report

• Project/Area Number: 24710204
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster science
• Research Institution: University of Yamanashi
• Principal Investigator: SANO Tetsuya 山梨大学, 医学工学総合研究部, 助教 (90533589)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: 南岸低気圧 / 降水システム / 降雪 / 降雨 / X-バンドマルチパラメータレーダー

Research Abstract

A stratiformed precipitating system associated with an extratropical cyclone off the south coast of Japan in winter season often brings rainfall or snowfall to areas along Pacific Ocean of Japan. In this study, the structure of the stratiformed precipitating system and the meteorological conditions with rainfall or snowfall brought by the precipitating system were analyzed. Then, the probability of determination of rain or snow in the stratiformed precipitating system was discussed.
The three-dimensional observations of the height of melting layer and the falling to surface of the layer with snowflakes and ice particles above the brightband by X-band multi-parameter radars are expected to determine rainfall or snowfall in the stratiformed precipitating system adequately. Additionally, it is also necessary to observe a circulation at the lower layer of the extratropical cyclone and meteorological conditions just before the arriving of the stratiformed precipitating system.

Research Products

• [Journal Article] 夏季静穏日に甲府盆地上で出現する積乱雲の出現分布と出現前の地上場の特徴 (2014)
  • Author(s): 佐野哲也, 末次忠司, 大石哲
  • Journal Title: 土木学会論文集B1(水工学) Volume: 70巻 Pages: I_889-I_894
• [Journal Article] Structure, Adjoining a Bay in Summer (2012)
  • Author(s): Tetsuya SANO, Satoru OISHI, Kengo SUNADA
  • Journal Title: Journal of Meteorological Society Japan Volume: 90巻 Pages: 807-831
• [Presentation] Case Study on the Formation of Snowfall in a Basin Covered by the Stratiformed Precipitation System with an Extratropic Cyclone in Winter (2014)
  • Author(s): Tetsuya SANO, Tadashi SUETSUGI, Satoru OISHI
  • Organizer: 94th AMS Annual Meeting
  • Place of Presentation: Atlanta
  • Year and Date: 20140202-06
• [Presentation] 冬季の南岸低気圧に伴う甲府盆地の降雪の事例解析 (2013)
  • Author(s): 佐野哲也, 末次忠司, 大石哲
  • Organizer: 日本気象学会2013年秋季大会
  • Place of Presentation: 仙台国際センター(仙台)
  • Year and Date: 20131119-21
• [Presentation] 冬季の南岸低気圧に伴う層状性降水システムのX-バンドマルチパラメータレーダー観測 (2013)
  • Author(s): 佐野哲也, 末次忠司, 大石哲
  • Organizer: 水文・水資源学会2013年度研究発表会
  • Place of Presentation: 神戸大学百年記念館(神戸)
  • Year and Date: 20130925-27
• [Presentation] 台風の通過に伴う内陸盆地を囲む山岳斜面上の豪雨形成 (2013)
  • Author(s): 佐野哲也, 大石哲, 砂田憲吾, 末次忠司
  • Organizer: 日本地球惑星連合2013年大会
  • Place of Presentation: 幕張メッセ国際会議場(千葉)
  • Year and Date: 20130519-24
• [Presentation] Formation of Heavy Rainfall over Inner Mountain Slopes Surrounding a Inner Basin Associated with the Pass of a Typhoon (2013)
  • Author(s): Tetsuya SANO, Satoru OISHI, Kengo SUNADA, Tadashi SUETSUGI
  • Organizer: International Conference on Mesoscale Convective Systems and High-Impact Weather in East Asia
  • Place of Presentation: Beijing
  • Year and Date: 20130327-29
• [Remarks] 佐野哲也, X-MPレーダーでみた甲府盆地の降水系, 甲府地方気象台, 2013年12月10日
• [Remarks] 佐野哲也, 短時間局地豪雨に対する山梨大学の取り組み, NHK甲府放送局「まるごと山梨」「ニュース山梨845」, 2013年9月2日
• [Remarks] 佐野哲也, 冬型の気圧配置「西高東低」, 山梨日日新聞「知りたい!?好奇心」, 2012年12月11日