| 1991年梅雨期阻塞高压的维持和瞬变扰动 |
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| 引用本文： | 陶祖钰,胡爱学.1991年梅雨期阻塞高压的维持和瞬变扰动[J].气象学报,1994,52(2):231-234. |
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| 作者姓名： | 陶祖钰 胡爱学 |
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| 作者单位： | 北京大学地球物理系 |
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| 摘 要： | １９９１年我国江淮流域发生了３０多年来少见的严重洪涝。与特大洪水的１９５４年相似，１９９１年梅雨期的大尺度环流特征也是在中高纬度存在乌拉尔山和东西伯利亚两个稳定的阻塞高压。因此，分析阻塞高压的维持机制是研究１９９１年特大洪涝成因的一个重要方面。本文利用Ｅ向量，对１９９１年梅雨期阻塞高压长时间维持的机制进行了考察。
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| 收稿时间： | 1992/7/24 0:00:00 |
| 修稿时间： | 1992/10/26 0:00:00 |
THE BLOCKING HIGH AND TRANSIENT DISTURBANCES IN MEI-YU PERIOD OF 1991 |
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| Tao Zuyu and Hu Aixue.THE BLOCKING HIGH AND TRANSIENT DISTURBANCES IN MEI-YU PERIOD OF 1991[J].Acta Meteorologica Sinica,1994,52(2):231-234. |
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| Authors: | Tao Zuyu and Hu Aixue |
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| Institution: | Department of Geophysics, Peking University, Beijing, 100871;Department of Geophysics, Peking University, Beijing, 100871 |
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| Abstract: | The mechanism of blocking high maintenance in Mei-yu period of 1991 is examined by the E -vector.The results show that the maintenance of blocking high is associated with the divergence of westerlies momentum flux,which is caused by the dragging transient disturbance transports the westertelies momentum to the north at the north-western side of blocking high and the leading transient disturbance transports the westerlies momentum to the south at the south-western side of blocking high. |
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