摘要
使用Ｍ Ｍ４ 对１９９２ 年７ 月２３ 日发生在京津冀地区的大暴雨过程进行了数值模拟；利用模拟得到的高时空分辨率资料，通过使用Ｍａｓｓ 模式所进行的几组试验以及用ＭＭ４ 所做的敏感性试验，说明了在该次大暴雨过程中下垫面的动力及热力强迫作用．指出：下垫面强迫所导致的辐合上升运动是这次暴雨过程的触发机制．
The torrential rain process on July 23,1992 over Beijing Tianjin Hebei region is simulated by using the model MM4. With the model products of high temporal and spatial resolution, some kinds of numerical experiments employing numerical models Mass & MM4 are designed here to demonstrate the effects of underlying surface mechanical and thermal forcing on the torrential rain process. It is pointed out that the strong upward motion associated with surface convergence forced by underlying surface is the trigger mechanism of the torrential rain process.
出处
《应用气象学报》
CSCD
北大核心
1999年第4期436-444,共9页
Journal of Applied Meteorological Science
基金
国家自然科学基金
关键词
下垫面强迫
暴雨
触发机制
数值研究
Underlying surface forcing Torrential rain Trigger mechanism
