Analysis of the Precipitable Water Vapor Observation in Yunnan–Guizhou Plateau during the Convective Weather System in Summer

The ERA5 reanalysis dataset of the European Center for Medium-Range Weather Forecasts (ECMWF) in summers from 2015 to 2020 was used compare and analyze features precipitable water vapor (PWV) observed by six ground-based Global Navigation Satellite System (GNSS) meteorology (GNSS/MET) stations Yunnan–Guizhou Plateau. correlation coefficients two datasets ranged between 0.804 0.878, standard deviations 4.686 7.338 mm, monthly average −4.153 9.459 which increased with altitude station. Matching quality-controlled ground precipitation data PWV time space revealed that most occurred when 30 65 mm roughly met normal distribution. We vertical integral divergence moisture flux (∇p) S-band Doppler radar networking products combined study convergence process delivery conditions during deep convective weather August 24 26, 2020, can be real-time observation capability continuity small-scale mesoscale processes. Furthermore, 1 h cloud top temperature (ctt) at same site were demonstrate effect on transit systems different time–space scales.