摘要
强沙尘暴是干旱地区一种破坏性极大的灾害性天气现象。本文分析了１９９３年５月５日强沙尘暴的微气象特征和各辐射分量特征。并结合这次强沙尘暴大、中尺度过程特征，分析了强沙尘暴和干飑线的形成和发展机制，干飑线发展具有一种沙尘造成的辐射冷却正反馈机制和局地不稳定大气的触发机制。进而根据这些事实建立一个干飑线发展的物理模型。
The strong dust storm is a disaster weather with serious destruction in arid areas The characteristics of micrometeorology and radiation of the strong dust storm on May 5 in 1993 are analyzed The growth mechanism of strong dust storm and dry squall line is also studied from characteristics of micrometeorology, radiation and macro- and meso-scale weather processes There are a positive feedback machanism of dust radiation heating and a mechanism triggered by local atmosphere instability in the growth process of the dry squall line A physical model of the dry squall line growth is developed based on the above facts
出处
《大气科学》
CSCD
北大核心
1997年第5期581-589,共9页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金
