Numerical Experiments of Three Boundary Layer Parameterization Schemes on Simulation Results of Low-vortex Rainstorm Weather in Langfang Region

作者：Min PENG,Qingchuan WANG,Wenxia YANG,Yaqing HONG,Pengju JIN

摘要：Using mesoscale numerical model WRFV3.7,simulation tests of a low-vortex rainstorm were carried out in Langfang area,and simulation results of three boundary layer parameterization schemes(MYJ,YSU,ACM2)were contrasted.The results showed that the rainstorm in Langfang area had better dynamic condition.By the influence of northeast cold vortex,cold vortex at high altitude cooperated with the surface wind speed convergence,which provided better dynamic condition for strong convective rainfall.Three boundary layer parameterization schemes all simulated surface wind speed convergence of rainstorm center.Simulation results of 24-h rainfall distribution showed that the simulation of YSU scheme was better than ACM2 and MYJ.The simulation results of flow field and temperature field also verified that YSU scheme was better than other schemes.

发文机构：Gu an Meteorological Bureau of Hebei Province Langfang Meteorological Bureau of Hebei Province Hebei Weather Modification Office

关键词：BoundarylayerparameterizationschemeWRFmodelLow-vortexrainstorm

分类号： P45[天文地球—大气科学及气象学]