2015年6月28日甘南地区局地短时强降水天气个例分析

2015年6月28日08时至29日08时,全州普降雷阵雨,舟曲局部地方出现暴雨,利用MICAPS资料做本次降水过程形势场分析,本次降水过程中最主要的影响系统是巴湖东移南下的低压槽与700百帕的暖湿气流,本次降水强度最大的柏林站最强降水出现于28日13-14时,小时降水量达到60mm,与降水落点符合较好的是700百帕切变线的位置,为短时强降水提供了良好的抬升力条件,且短时强降水前期,700百帕偏南气流维持时间较长,全州处于高温高湿的环境中。

A case study of local short-term heavy rainfall in Gannan on June 28, 2015

From 08:00, June 28, 2015 to 08:00, June 29, 2015, thunderstorms fell all over the prefecture, and rainstorms occurred in some parts of Zhouqu. MICAPS data were used to analyze the situation field of this precipitation process. The main influence system of this precipitation process was the low-pressure trough moving eastward and southward of Ba Lake and 700 HPA warm and humid air flow. The strongest precipitation at Berlin station, the largest precipitation intensity, occurred at 13-14:00, on June 28, with hourly precipitation When it reaches 60mm, the location of 700 HPA shear line is in good agreement with the precipitation falling point, which provides a good lifting condition for the short-term heavy rainfall. In the early stage of the short-term heavy rainfall, the 700 HPA South air flow maintains for a long time, and the whole state is in a high temperature and humidity environment.