2009 Fiscal Year Final Research Report
Analysis on Recent Increasing Trend of Heavy Rainfall Frequency
| Project/Area Number |
19510192
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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 |
Natural disaster science
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| Research Institution | Kyushu University |
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Principal Investigator |
NISHIYAMA Koji Kyushu University, 大学院・工学研究院, 助教 (20264070)
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| Co-Investigator(Kenkyū-buntansha) |
JINNO Kenji 九州大学, 大学院・工学研究院, 教授 (80038025)
MATSUURA Tomonori 富山大学, 理工学部, 教授 (10414400)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 気象災害 / 水災害 |
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| Research Abstract |
In this study, in order to find contributing factor of recent increasing trend of heavy rainfall frequency, pattern recognition of warm-season meteorological field pattern in Kyushu, Japan, was conducted firstly. The next analysis made significant connection between temporal variation (for the last 30 years) in heavy rainfall frequency and meteorological field patterns. Consequently, it could be confirmed that the frequency of heavy rainfall depends on the direction of water vapor fluxes and the locations of typhoon and stationary front. However, these results clearly indicated that the recent increase trend of heavy rainfall frequency is not consistent with that of meteorological field patterns relating to heavy rainfall.
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