| Project/Area Number |
21540456
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Japan, Meteorological Research Institute |
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Principal Investigator |
INOUE Hanako (2010-2011) 気象庁気象研究所, 気象衛星・観測システム研究部, 研究官 (20442741)
加藤 輝之 (2009) Japan, Meteorological Research Institute, 予報研究部, 主任研究官 (70354438)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAI Sento 独立行政法人防災科学技術研究所, 雪氷防災研究センター, 総括主任研究員 (20360365)
TSUGUTI Hiroshige 気象庁気象研究所, 予報研究部, 研究官 (90553165)
猪上 華子 気象庁気象研究所, 気象衛星・観測システム研究部, 研究官 (20442741)
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| Research Collaborator |
KATO Teruyuki 気象庁, 予報部数値予報課, 数値予報モデル開発推進官
HIROKAWA Yasutaka 気象庁, 予報部予報課, 技術専門官
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 集中豪雨 / 豪雪 / 雲解像数値モデル / 気象レーダー |
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| Research Abstract |
Suitable height for the judgment of favorable atmospheric conditions causing heavy rainfall around Japan is suggested to be 500 meters, not 850 hPa(～1500 meters) that has been often used, from the statistical results of objective analysis data and cloud-resolving models. This study also shows suitable factors for the judgment are equivalent potential temperature and water vapor flux amounts at a 500 meter height, and their threat hold values are objectively estimated for each season and several regions around Japan. Statistical comparisons of radar observations for a month during a heavy snowfall revealed that preferable atmospheric conditions differ between snowfall systems, possibly resulting in the difference of snowfall distributions.
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