| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
We investigated the cause of frequent dust events in East Asia since 2000. We developed a methodology to statistically estimate a threshold wind speed for dust generation using meteorological observatory data, and we employed this threshold speed as an index of soil and land surface conditions. We clarified that a major cause of increased dust events is a desertification (i.e., a decrease of threshold speed) in Mongolia, eastern Inner Mongolian and the northeastern China from an analysis of dust generation frequeny, strong wind frequency, and threshold speed.
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