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投稿时间：2008-04-24 修订日期：2008-11-06
投稿时间：2008-04-24 修订日期：2008-11-06
中文摘要: 针对短波辐射对东北冷涡强对流的可能影响，应用MM5模式对2002年7月12日东北冷涡诱发
的强风暴个例进行了数值模拟试验。发现在东北冷涡天气尺度环流背景下，大气接收的短波
辐射通过激发中尺度环流影响强对流的发生时间，而不是通过影响不稳定能量的积累触发强
对流；地面短波辐射对对流层低层大气的加热作用是触发本次东北冷涡强对流的重要条件。
地面短波辐射加热在对流层低层产生中尺度辐合扰动及对流不稳定层结共同促使了对流的爆
发和维持。
Abstract:For understanding the influences of solar radiation to convection of northeaster
n cold vortex, a case of severe storm in a cold vortex over northeastern on 12
July 2002 over Liaoning Province was simulated by MM5. The contrasting examinat
ions of solar radiation affecting severe storm showed that atmospheric solar rad
iation can trigger severe convection by inspiring mesoscale circulation but not
by accumulating instable energy in the background of synoptic scale system of c
old vortex. It is an important condition to trigger this severe convection in co
ld vortex that surface shortwave radiation heats up lower layer of troposphere a
tmosphere, and produces strong meso scale convergence and convective instable l
ayer onset and maintenance of convection.
keywords: solar radiation cold vortex over northeastern China severe convection trigger
ring mechanism
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引用文本：
张立祥,李泽椿,2008.短波辐射对东北冷涡强对流影响的模拟分析[J].气象,34(12):3-10.
Zhang Lixiang,Li Zechun,2008.Numerical Analysis of Solar Shortwave Radiation Affecting Severe Convection in Cold Vortex over Northeastern China[J].Meteor Mon,34(12):3-10.
张立祥,李泽椿,2008.短波辐射对东北冷涡强对流影响的模拟分析[J].气象,34(12):3-10.
Zhang Lixiang,Li Zechun,2008.Numerical Analysis of Solar Shortwave Radiation Affecting Severe Convection in Cold Vortex over Northeastern China[J].Meteor Mon,34(12):3-10.