Numerical Simulation of Meiyu Heavy Rainfall Event
Abstract：By use of the mesoscale rainstorm model, a Meiyu heavy rainfall event from 8 to 10 July 2003 is numerical simulated with the routine data. The results show that the simulated precipitation of the high resolution model is very similar with the observational rainfall. The model has a good predictive skill for the location, intensity and center of the Meiyu heavy rainfall, and TS score is higher. The water vapor transfer role of southwesterly flow and the high-value area of water vapor flux over Jianghuai region, is supplied important water vapor conditions for heavy rainfall formation and maintenance, moisture convergence zone is corresponding with the rainfall. The divergence vertical pattern, which the convergence at low level and divergence at upper level, is supplied favorable dynamic conditions for heavy rainfall devel- opment. Heavy rainfall occurred near the positive vortieity center and negative divergence center.
Keywords：heavy rainfallprecipitation forecastnumerical simulationdiagnosis analysis
Publication Date：2011-08-08
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )