ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
A Comprehensive Analysis of Typhoon Influences on Major Flooding Events in Shaanxi
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Abstract:
The offing typhoon in west of 130°E and major flooding events in Shaanxi during the past 35 years (1970-2004) were analytically studied by applying methods of statistics, synoptic, satellite cloud image analysis and physical diagnosis. Results show that the correlation is close to 90%. Major flooding events are concentrated in July and August, occupying nearly 88% of the total. When a typhoon originates in 130°E or moves westwards from the West Pacific across 130°E, it has more obvious influences on major flooding events in Shaanxi. The required water vapor and energy are transited through easterly winds around the typhoon center, especially in 850 hPa level. The offing typhoon provides necessary water vapor and energy to the occurrence and enhancement of floodcausing torrential rain in Shaanxi, and typhoon influence is an important factor to induce major flooding events in Shaanxi.
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