Analysis of Temporal-Spatial Variation Characteristics of A Rainstorm in Shenzhen Based on GNSS-PWV
In September 2023,Shenzhen was struck by Typhoon'Haikui',leading to a rare extreme rainstorm that caused substantial losses to urban and economic development.By inverting the PWV data from eight continuously operating reference system(CORS)in Shenzhen,this study analyzed the causes of this rainstorm and the spatiotemporal distribution characteristics of meteorological parameters such as PWV,temperature,and atmospheric pressure before and after the rainstorm.The results showed that in different regions,the overall increase in PWV could,to a certain extent,reflect the intensity of precipitation.However,the maximum value of a single PWV did not directly correspond to the actual precipitation amount.Atmospheric thermodynamic conditions like air temperature and pressure played an indicative role in the generation of rainstorms.The long-term retention of the residual vortex of Typhoon Haikui was identified as an important factor contributing to this extreme rainstorm.Additionally,the topographic relief of Shenzhen also significantly contributed to the uneven distribution of precipitation.
GNSSrainstormprecipitable water vaporatmospheric thermodynamics
万方数据
维普
