气象科学2026，Vol.46Issue(2)：113-125,13.DOI:10.12306/2025jms.0027
CMA-MESO中不同云微物理方案对台风强降水的云宏、微观特征的模拟分析
Simulation analysis of cloud macro-micro features of typhoon heavy rainfall in CMA-MESO by different cloud microphysics schemes
摘要
Abstract
This study employs the CMA-MESO model to investigate a torrential rainfall event associated with Typhoon Siam's landfall in Guangdong Province in early July 2022.Three cloud microphysical schemes(WSM6,Liu-Ma,and Thompson)implemented in the CMA-MESO model were evaluated through comparative analysis of precipitation patterns and cloud microphysical characteristics,utilizing observational data from regional automatic weather stations,satellite observations(FY-2H and FY-4A),ERA5 reanalysis data,and mosaic radar composites.Key findings include:(1)all schemes demonstrate reasonable capability in reproducing the spatial distribution of rainfall areas and precipitation center locations,though the simulated 24-hour cumulative precipitation exhibited excessive spatial diffusion compared to observations.(2)Systematic overestimation of total cloud cover was observed across all schemes,suggesting potential deficiencies in hydrometeor sedimentation processes that hindered effective precipitation formation.Particularly,simulations of deep convective clouds near the precipitation center displayed notable discrepancies,with the Liu-Ma scheme exhibiting relatively stable representation of convective intensity.(3)Radar reflectivity analysis revealed underestimation of strong echo core intensities and temporal lag in echo system propagation.Comparative evaluation suggests potential limitations in ice-phase process parameterizations for CMA-MESO,with Thompson's excessive snow production resulting in substantially overestimated echo below 5 dBZ.(4)Significant inter-scheme variations emerged in liquid hydrometeor distributions.The Liu-Ma scheme demonstrated superior ice-phase conversion efficiency through enhanced cloud water content in precipitation cores,while Thompson's imbalanced ice-phase partitioning adversely affected its convective core representation.The comprehensive evaluation reveals that for typhoon-related extreme convective precipitation events,the Liu-Ma scheme achieves optimal performance in daily precipitation accumulation,total cloud cover,and brightness temperature simulations,whereas the Thompson scheme shows systematic deficiencies in cloud microphysical representation and precipitation characteristics.关键词
云微物理方案/CMA-MESO模式/暴雨/数值模拟Key words
cloud microphysics schemes/CMA-MESO model/rainstorm/numerical simulation分类
天文与地球科学引用本文复制引用
程佳佳,徐国强,赵婥..CMA-MESO中不同云微物理方案对台风强降水的云宏、微观特征的模拟分析[J].气象科学,2026,46(2):113-125,13.基金项目
国家自然科学基金资助项目(42175167 （）
U2142213) （）
中国气象局能力提升联合研究专项资助项目(22NLTSZ006) （22NLTSZ006）
中国沙漠气象科学研究基金资助项目(Sqj2023022) （Sqj2023022）
