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
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: Boundary layer parameterization scheme WRF model Low-vortex rainstorm
• 年，卷（期）: 2021,（1）
• 页码范围: 59-62
• 页数: 4页
• 分类号: P45

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.