海洋气象学报2025，Vol.45Issue(1)：34-44,11.DOI:10.19513/j.cnki.hyqxxb.20240625002
尺度适应积云对流参数化方案对台风"暹芭"的数值模拟
Impact of scale-aware cumulus convection parameterization scheme on numerical simulation of Typhoon Chaba
摘要
Abstract
Traditional cumulus convection parameterization schemes may be inefficient in the numerical simulation of precipitation with high resolution model,especially when the grid size less than 10 km,while the scale-aware cumulus convection parameterization scheme is an effective alternative.In this study,5 simulation experiments with horizontal resolutions of 800 m,1 km,3 km,10 km and 20 km are carried out using the CMA-MESO model(China Meteorological Administration MESOscale model)and the scale-aware KFeta(Kain-Fritsch eta)cumulus convection parameterization scheme for Typhoon Chaba.The results are as follows.(1)With the increase of horizontal resolution,the precipitation intensity and falling area simulated by the scale-aware KFeta cumulus convection parameterization scheme are closer to the real situation,which significantly reduces the false precipitation caused by cumulus clouds and improves the grid precipitation.(2)With the weakening of convective intensity,the advantages of the scale-aware KFeta cumulus convection parameterization scheme gradually become prominent,and the missing ratio and false alarm ratio are significantly reduced.(3)In the strong convection area at the time of the maximum precipitation,the simulation results of the radar composite reflectivity of the scale-aware KFeta cumulus convection parameterization scheme are better.On the whole,the scale-aware KFeta cumulus convection parameterization scheme performs better under weak convective intensity,which provides a reference for improving the prediction of heavy precipitation in the current numerical model.关键词
CMA-MESO模式/KFeta方案/积云对流参数化方案/台风"暹芭"Key words
CMA-MESO model(China Meteorological Administration MESOscale model)/KFeta(Kain-Fritsch eta)scheme/cumulus convection parameterization scheme/Typhoon Chaba分类
天文与地球科学引用本文复制引用
马怡轩,徐国强,于翡..尺度适应积云对流参数化方案对台风"暹芭"的数值模拟[J].海洋气象学报,2025,45(1):34-44,11.基金项目
国家自然科学基金项目(42175167,U2142213) （42175167,U2142213）
中国气象局能力提升联合研究专项(22NLTSZ006) （22NLTSZ006）
中国沙漠气象科学研究基金项目(Sqj2023022) （Sqj2023022）
