| 高低空急流与水汽凝结过程对暖锋环流演变的影响 |
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| 引用本文： | 吕克利,蒋后硕.高低空急流与水汽凝结过程对暖锋环流演变的影响[J].气象学报,1999,57(6):681-693. |
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| 作者姓名： | 吕克利 蒋后硕 |
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| 作者单位： | 南京大学大气科学系!南京，２１００９３ |
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| 摘 要： | 利用包括水汽凝结过程的原始方程模式模拟了高空西风急流和低空南风急流中暖锋环流的演变以及凝结的发生。计算结果显示，水汽凝结过程对暖锋环流有非常重大的作用，是暖锋锋区产生强中尺度深对流的重要机制。与干模式大气中高空西风急流对暖锋环流的影响远大于低空南风急流的结论相反，在含有水汽凝结过程的湿大气中，低空南风急流的作用远大于高空西风急流，它是暖锋锋区中产生强中尺度降水的更重要因子；高低空急流的共同作用，对湿暖锋锋区中多重中尺度雨带的形成具有重要作用。
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| 关 键 词： | 高低空急流 凝结 暖锋 |
| 收稿时间： | 1998/1/21 0:00:00 |
| 修稿时间： | 1998/9/28 0:00:00 |
INFLUENCES OF UPPER AND LOW-LEVEL JETS AND CONDENSATION PROCESS OF MOISTURE ON EVOLUTION OF WARM FRONT CIRCULATION |
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| Lu Keli and Jiang Houshuo.INFLUENCES OF UPPER AND LOW-LEVEL JETS AND CONDENSATION PROCESS OF MOISTURE ON EVOLUTION OF WARM FRONT CIRCULATION[J].Acta Meteorologica Sinica,1999,57(6):681-693. |
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| Authors: | Lu Keli and Jiang Houshuo |
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| Institution: | Department of Atmospheric Sciences, Nanjig University, Nanjing 210093;Department of Atmospheric Sciences, Nanjig University, Nanjing 210093 |
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| Abstract: | The evolution of warm front circulation and occurrence of condensation in the upperlevel westerly jet and low-level southerly jet are simulated by using a primitive equation model including moisture condensation process. The calculation results show that the moisturecondensation plays a very significant role on warm front circulation and may be an importantmechanism to excite strong mesoscale deep convection in the warm frontal zone. In themoist atmospheric model with moisture condensation process the effects of low-level southerly jet on the warm front circulation are much larger than the upper-level westerly jet and aremore important factors for exciting strong mesoscale precipitation in the warm frontal zonewhile i0n the dry case. as opposed to the moist case. the influences of upper-level westerly jeton the warm frontal circulation are much larger than the low-level southerly jet. A combination of the upper and low-level jets has important effects on formation of multiple mesoscalefrontal rainbands in the moist warm frontal zone. |
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| Keywords: | Upper-lower jet Condensation Warm front |
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