不同参数化方案下贵阳机场一次强雷雨过程的数值模拟  

Numerical Simulation of a Severe Thunderstorm Process at Guiyang Airport under Different Parametric Schemes

作　　者：杨新宇 罗阳 张亚男 

机构地区：[1]中国民用航空西南地区空中交通管理局贵州分局,贵州 贵阳

出　　处：《自然科学》2024年第2期351-357,共7页Open Journal of Nature Science

摘　　要：本文利用WRF数值模式中不同参数化(主要在云微物理、积云对流、行星边界层)方案组合模拟贵阳机场2023年8月21日一次强雷雨过程,得出以下主要结论:垂直速度在强雷雨时段垂直结构基本一致,但是在弱阵性降水时不同组合方案垂直结构不一;在模拟累积降水时,整体四个方案模拟强雷雨和整个降水过程的降水量比实况降水保守得多,且随时间的增加降水量没有明显的增加;垂直速度强度整体都偏弱,导致降水量也比实况偏弱。In this paper, different parameterization schemes (mainly in cloud microphysics, cumulus convection and planetary boundary layer) in the WRF numerical model are combined to simulate a severe thunderstorm process at Guiyang Airport on August 21, 2023, and the following main conclusions are drawn: During severe thunderstorms, the vertical velocity maintains a consistent structure. However, in periods of weak frontal precipitation, the vertical structure varies depending on the combination scheme used. In the simulation of cumulative precipitation, the precipitation simulated by the whole four schemes is much more conservative than the real precipitation, and the precipitation does not increase significantly with the increase of time. The vertical velocity intensity is generally weak, resulting in weaker precipitation than the reality.

关 键 词：WRF 参数化 强雷雨 贵阳机场 

分 类 号：G63[文化科学—教育学]