Analysis of rainstorm process of"2022-06-24"Meiyu period in Huzhou
Based on the data of mesoscale automatic weather station,dual-polarization radar data,ERA5 reanalysis data and numerical forecast data,this paper analyzes a typical Meiyu period rainstorm process in Huzhou in 2022.The results show that the radar in the convective thunderstorm gale stage shows the characteristics of squall line,heavy raindrops and high concentration,while during the stable precipitation stage,the radar shows the characteristics of small raindrops and low concentration.The intensity of the subtropical high weakens slowly,and the long-term maintenance of the shear line and 700 hPa jet stream in the region are the main reasons for the heavy rainfall.The numerical model predicts that the heavy rainfall area moves southward.It is necessary to pay attention to the latest forecast adjustment and the changes of physical quantities and make reasonable corrections.It is helpful to improve the accuracy of rainstorm forecast by strengthening the comparative analysis of various numerical forecast products.
万方数据
