Application of New Type of Detection Data in a Heavy Rainfall Process in Changsha

• 作者: Fan Yu Huo Tao Liu Daxin Shan Nan Tang Xiaonan
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: WIND profile RADAR MILLIMETER wave CLOUD RADAR Temperature advection
• 年，卷（期）: 2019,（4）
• 页码范围: 37-38
• 页数: 2页
• 分类号: P

摘要

Using detection data with high space-time resolution from the wind profile radar and millimeter wave cloud radar of Changsha station, and combining observation data of ground automatic station, heavy precipitation process in Changsha area from June 29 to July 1, 2017 was analyzed. The results showed that the atmospheric temperature advection was calculated by inversion of wind profile radar data of boundary layer, and it could intuitively analyze changes of atmospheric temperature advection before and after precipitation process. The variation characteristics of intensity, thickness and height of warm and cold advection in the upper and lower levels were highly related to the evolution of the precipitation process. The millimeter wave cloud radar can better reflect the vertical structure and evolution of the cloud over the observatory, and had certain indications for the structure characteristics of cloud before the starting of precipitation. When the strong reflectivity started to approach the ground, it also meant that heavy precipitation began to appear.