| 低空急流与暴雨相互关系的对比分析 |
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| 引用本文： | 孙淑清,马廷标,孙纪改.低空急流与暴雨相互关系的对比分析[J].气象学报,1979,37(4):36-44. |
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| 作者姓名： | 孙淑清 马廷标 孙纪改 |
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| 作者单位： | 中国科学院大气物理研究所
(孙淑清)，陕西省气象台
(马廷标)，宁夏回族自治区气象台(孙纪改) |
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| 摘 要： | 本文通过对北方地区两次低空东南风急流的对比分析,指出:低空急流附近有无暴雨发生与其本身结构特征有关。它们在湿度、三维流场以及急流本身的稳定性等方面,有很大的差异。因此在讨论低空急流与暴雨的相互作用时,不能只注意到低空出现了强风,甚至有明显的水平和垂直切变。如果它不具备有利于暴雨发生的热力和动力条件,那它就可能是一次“空急流”。
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| 收稿时间： | 2/9/1979 12:00:00 AM |
ON THE RELATION BETWEEN THE LOW LEVEL JET AND RAINSTORM |
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| Sun Shu-qing,Ma Ting-biao and Sun Ji-gai.ON THE RELATION BETWEEN THE LOW LEVEL JET AND RAINSTORM[J].Acta Meteorologica Sinica,1979,37(4):36-44. |
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| Authors: | Sun Shu-qing Ma Ting-biao and Sun Ji-gai |
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| Institution: | Institute of Atmospheric Phgsics, Academia Sinica;Meteorological Observatory, Shan Xi Province;Meteorological Observatory, Ningxia Huizu Autonomous Region |
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| Abstract: | In this paper, two cases of low level, southeastly jets in North China are compared. It is found that whether there will occur heavy rain near the jet or not depends on its structure. There are marked differences between them in moisture transfer, three-dimensional flow and stability of the jets. In the forecasting of rainstorm, it is insufficient only to pay attention to the strength of wind, even with a remarkable horizontal and vertical shear. Favorable thermal and dynamic condidons are necessary for rainstorm. |
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