2009 Fiscal Year Final Research Report
Intraseasonal variability and its impacts to the diurnal cycle over the monsoonal Asia
| Project/Area Number |
19740284
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YOKOI Satoru The University of Tokyo, 気候システム研究センター, 特任助教 (40431902)
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| Project Period (FY) |
2007 – 2009
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| Keywords | アジアモンスーン / 降水変動 / 季節内変動 / コールドサージ / レーダ雨量 |
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| Research Abstract |
This study reveals horizontal distribution of rainfall variability caused by several types of atmospheric disturbances related to the intraseasonal variability over the Indochina Peninsula. During the rainy season, 30-60-day variability originated in the equatorial Indian Ocean causes rainfall fluctuation only to the west of mountain ranges lying in the north-south direction, while westward-propagating vortex disturbances can produce rainfall in both sides of the ranges. This study also investigates causes of a heavy rainfall event in central Vietnam in autumn to discuss how a cold surge propagating from mid-latitudes causes the heavy rainfall.
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Research Products
(14 results)
