Numerical Simulation of Microphysical Process and Water Vapor Budget in a Spring Heavy Rainfall Process in Henan Province
Abstract：A wide range heavy rainfall process on 3-4 March 2007 in Henan province was simulated by ARPS numerical model.On the basis of accurate simulation results,the weather situation and vapor conditions was analyzed.At the same time,the author calculated water vapor transportation,water vapor budget,the concentration and transformation of each phase water during the rainfall process.The results indicated that Southwest Vortex at 850 hPa and surface Jianghuai cyclone were the main influence system.The vapor comes from Bengal Bay and South China Sea.The water vapor budget,the vertical transportation of vapor on middle and low levels correspond well with rainfall intensity.The sustained strong transportation of southwest warm wet air and the significant convergence were important condition caused this heavy rainfall process.The numerical simulation indicated the microstructure in cloud,transformation of each phase water and formation mechanisms of rain in different periods were of significant differences.
Keywords：heavy rainfall processnumerical simulationwater vapor budgetcloud microphysical characteristic
Publication Date：2011-05-27
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 14-20 )