积云对流与西南低涡的活动
投稿时间:1990-12-18    点此下载全文
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作者单位
丁治英 南京气象学院 
吕君宁 南京气象学院 
中文摘要:利用复杂地形条件下的细网格模式[1],对一次西南低涡的活动情况进行了数值模拟。试验发现,积云对流因子对西南低涡的移动有一定的影响。当冷暖平流较弱时,强大的积云对流可使低涡附近的西南风分量加大,促使低涡东部负涡度加大,不利于低涡东移。
中文关键词:低涡  积云对流  冷暖平流
 
CUMULUS CONVECTION AND ITS RELATION TO THE SW CHINA AND QINGHAI-XIZANG PLATEAU VORTEXES
Abstract:The process of a moviug SW China vortex is simulated in terms of a finemesh model over complicated terrain. It is found that the cumulus convection affects the motion of the SW China vortex. When the cold and warm advection is weak, the powerful cumulus convection causes the south wind in the vicinity of the vortex and the negative vorticity east of the vortex to increase, thus inhibiting the eastward motion of the vortex.
keywords:vortex  cumulus convection  coud and warm advection
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