Simulation on a Rainstorm in Arid Region by Different Combinations of Parameterization Schemes of WRF
In order to investigate the effects of different combinations of parameterization schemes,a rainstorm occurred in the Tengger Desert on July 29,2012 was simulated by WRF3.6.This study was carried out with 14 combinations from microphysical,cumulus,land surface and planetary boundary layer parameterization schemes.The precipitation patterns simulated by different combinations were compared and analyzed based on the regional precipitation data and observed data in the same period.The results showed that the differences between the results of these combinations were distinct.Case 11,the combination of Thompson,KF,Pleim-Xiu and MYNN 2.5 level schemes,was the closest one to the observation in terms of 24-hour accumulated precipitation and hourly rainfall of single site,TS score and regional averaged error.Furthermore,a comparison of the changes of diagnostic parameters simulated by these combinations suggested that the differences of precipitation were the expression of the differences of diagnostic parameters between these combinations.Also,the diagnostic parameters simulated by WRF model were adopted to diagnose the causes of the rainstorm.
rainstormparameterization schemenumerical simulationforecast scorearid area
国家科技期刊平台
NSTL
万方数据
维普
