| 孟湾槽在百色市异常降雪天气中的作用 |
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| 引用本文： | 邓海光,唐毓勇.孟湾槽在百色市异常降雪天气中的作用[J].云南地理环境研究,2004(Z1). |
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| 作者姓名： | 邓海光 唐毓勇 |
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| 作者单位： | 广西壮族自治区百色市气象局 广西壮族自治区百色市气象局 广西百色 广西百色 |
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| 摘 要： | 通过对1983年12月28日、2002年12月26日百色市两次异常降雪天气过程的对比分析,发现冬季孟加拉湾槽的发展东移在其中起到了关键性的作用。由于孟加拉湾槽前暖湿气流强盛,这种强盛的西南暖湿气流在低空冷空气堆(冷锋)上发生强烈的系统性上升运动,从而导致百色市及其邻近地区出现异常的雨雪天气。
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| 关 键 词： | 异常降雪 孟加拉湾槽 |
THE ROLE OF THE BAY OF BENGAL TROUGH IN THE ABNORMAL SNOWFALL PROCESSES IN BAISE CITY. |
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| DENG Hai-guang,TANG Yu-yong.THE ROLE OF THE BAY OF BENGAL TROUGH IN THE ABNORMAL SNOWFALL PROCESSES IN BAISE CITY.[J].Yunnan Geographic Environment Research,2004(Z1). |
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| Authors: | DENG Hai-guang TANG Yu-yong |
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| Abstract: | Two abnormal snowfall events in Baise City on 28th Dec. 1983 and 26th Dec. 2002 are analyzed. The results show that the developing and eastward movin g of the Bay of Bengal trough in winter played a key role,especially on 500 hPa. In the southwest region of China, the short wave trough southeastward moving f rom the Tibetan Plateau merging with the Bay of Bengal trough could strengthen t he warm and moist stream lying in the front of the troughs and resulted in the e xtraordinary ascending motion from the cold air(cold front),which caused the distinct snowfall events. |
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| Keywords: | distinct snowfall events the Bay of Bengal trough |
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