贵州典型暴雨地形影响的数值模拟

以2011年6月5～6日贵州山地暴雨为例，采用中尺度数值模式WRF对贵州省典型的山地暴雨进行数值模拟，分析山地地形对暴雨环流的影响。结果表明，地形对500hPa的风场尽管没有改变大的分布格局，但发现地形未处理时的分布相对复杂；在700hPa层次上，去除地形影响时扰动更加明显；当消除地形后。南北气流交换更加明显，移动速度更快；未处理地形情况下的湿度分布更为复杂，西部地区有大量的高值中心；西部地势高，未处理地形时对天气系统的影响比较大。可见，地形未处理时环流系统的分布比消除地形时相对复杂。

The Typical Rainstorm Simulation of Terrain Influence in Guizhou

Taking rainstorm in mountain area of Guizhou during Jun. 5 - 6, 2011 as an example, the typical rainstorm was simulated with da- ta, the effects of mountain terrain on rainstorm circulation was analyzed. Topography had little effect on the 500 hPa wind field, but the distribution was relatively complex when the terrain was not processed. The disturbance was more obvious at 700 hPa level when eliminating terrain influence. The humidity was more complex, and the western had a number of high value center. The circulation distribution when the terrain had not processed was more complex than terrain eliminated.