地形因子对降水的影响研究综述

围绕地形如何影响降水、地形对降水的增幅影响,特别是地形对暴雨的影响研究进行综述。地形对降水的作用主要涉及动力和热力方面,包括迎风坡的阻塞回流、背风涡的生成或加深。地形的起伏通过触发地形重力波的生成,促进天气系统的发展。最后提出,在地形影响降水的数值模拟研究方面,应把更多的数据类型和高分辨率地形相结合,开展数据资料同化研究;气候统计研究方面,应着重开展山地降水的强度、大气环流形势等分析,以提高降水预报准确率。

A review of the effects of terrain factors on precipitation

The effect of terrain on precipitation and increment of precipitation, especially the effect of terrain on rainstorm is reviewed. The effect of terrain on precipitation mainly involves the dynamic and thermal aspects, including the blocked reversal flow of the windward slope and the generation or deepening of the leeward vortex. Terrain undulation promotes the development of weather system by triggering the generation of terrain gravity waves. To provide more precise backgrounds for improving the accuracy of precipitation prediction, the next focus of terrain impact on precipitation should be more data types combine with high resolution terrain data to carry out data assimilation in the research of numerical simulation of terrain effect precipitation, while in the climate statistical research, the focus should be more analysis of the terrain precipitation intensity and atmospheric circulation situation.