| 北半球冬季冷涌及其反馈过程对我国南方降水的影响 |
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| 引用本文： | 张元箴,吴洪.北半球冬季冷涌及其反馈过程对我国南方降水的影响[J].应用气象学报,1993,4(4):481-486. |
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| 作者姓名： | 张元箴 吴洪 |
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| 作者单位： | 1.北京气象学院 北京100081
(张元箴，吴洪)，北京气象学院 北京100081(张兴旺) |
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| 摘 要： | 分析了北半球冬季中、低纬度天气系统之间的相互作用及其与我国南方降水的关系，指出在降水出现时北半球极锋急流和副热带急流合并增强，而且急流入口区出现超地转风。这些现象有时与北半球冷涌到达中、低纬度后所引起的对流和哈得莱环流的增强及其反馈过程有联系，并且为我国南方降水提供了有利条件。
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| 关 键 词： | 冷涌 急流 超地转风 降水 |
Influence of Cold Surges and Its Feedback in Northern Winter on Precipitation in the South of China |
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| Zhang Yuanzhen Wu Hong Zhang Xingwang.Influence of Cold Surges and Its Feedback in Northern Winter on Precipitation in the South of China[J].Quarterly Journal of Applied Meteorology,1993,4(4):481-486. |
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| Authors: | Zhang Yuanzhen Wu Hong Zhang Xingwang |
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| Affiliation: | 1.(Beijing Institute of Meteorology, Beijing 100081) |
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| Abstract: | The interactions between middle and low latitude synoptic system in the winter sea-son of the Northern Hemisphere and their relationship with precipitation in the south ofChina have been comprehensively studied.The results show that when precipitation oc-curs,the polar-front jet is merged with subtropical jet,and then intensified,mean-while,the jet entrane appears supergeostrophic wind.This phenomenon sometimes isconnected with the increase of Hadley circulation and the convection caused by coldsurges of the Northern Hemisphere arriving middle and low latitude,and with its feed-back.It offers favourable conditions for precipitation in the South of China. |
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| Keywords: | Cold surge Jet current Supergeostrophic wind Precipitation |
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