| 螺旋度在分析一次三峡大暴雨中的应用 |
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| 引用本文： | 吴宝俊,于永安.螺旋度在分析一次三峡大暴雨中的应用[J].应用气象学报,1996,7(1):108-112. |
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| 作者姓名： | 吴宝俊 于永安 |
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| 作者单位： | 1.中国气象科学研究院，葛洲坝水力发电厂气象台 |
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| 基金项目： | 八五国家攻关项目,葛洲坝水力发电厂共同资助 |
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| 摘 要： | 用螺旋度分析了1982年7月16日三峡区间出现的近27年来最大一次暴雨。结果表明，①在垂直剖面图上，在雨区上空300 hPa附近，螺旋度有一个负的极小值中心；在600 hPa附近，有一个正的极大值中心。②300 hPa螺旋度分布图上的极小值中心位置，与主要雨区中心位置非常靠近，相距约60 km。
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| 关 键 词： | 螺旋度 三峡 暴雨 |
Applying Helicity to Analysis of Torrential Rain over the Changjiang Gorges |
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| Wu Baojun,Xu Chenhai,Liu Yanying,Zhou li.Applying Helicity to Analysis of Torrential Rain over the Changjiang Gorges[J].Quarterly Journal of Applied Meteorology,1996,7(1):108-112. |
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| Authors: | Wu Baojun Xu Chenhai Liu Yanying Zhou li |
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| Affiliation: | 1)???? (Chinese Academy of Meteorological Sciences, Beijing 100081); 2) (Hydroelectric Power Plant of Gezhou Dam, Yichang 443002) |
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| Abstract: | The helicity was applied to analyse a torrential rain event, which was the he4viest one during 1964 - 1990, occurred on July 16, 1982 over the Changjiang Gorges. The results show that: (1)on the vertical section chart, there was a negative ndnimum centre of the helicity near 300 hpa land a positive maximum centre of the helicity near 600 hpa over the heavy rain area. (2) on the 300 hpa chart, the centre of the negative ndnimum of the helicity was most close to the centre of the main heaVy rain area, the distance between them was about 60 km. |
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| Keywords: | Helicity Changjing Gorges Torrential rain |
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