Evaluation of the Predicted Particle Properties (P3) Microphysics Scheme in Simulations of Stratiform Clouds with Embedded Convection  

作　　者：Tuanjie HOU Baojun CHEN Hengchi LEI Lei WEI Youjiang HE Qiujuan FENG 

机构地区：[1]Laboratory of Cloud-Precipitation Physics and Severe Storms,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]CMA Cloud-Precipitation Physics and Weather Modification Key Laboratory(CPML),CMA Weather Modification Centre,Beijing 100081,China [3]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [4]Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing 210044,China [5]Beijing Weather Modification Centre,Beijing 100089,China [6]Institute of Atmospheric Environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China [7]Shanxi Artificial Precipitation Enhancement and Lightning Protection Technical Centre,Taiyuan 030032,China

出　　处：《Advances in Atmospheric Sciences》2023年第10期1859-1876,共18页大气科学进展（英文版）

基　　金：supported by the National Key R&D Program of China(2019YFC1510305);the National Natural Science Foundation of China(Grant Nos.41705119 and 41575131);Baojun CHEN also acknowledges support from the CMA Key Innovation Team(CMA2022ZD10);Qiujuan FENG was supported by the General Project of Natural Science Research in Shanxi Province(20210302123358);the Key Projects of Shanxi Meteorological Bureau(SXKZDDW20217104).

摘　　要：To evaluate the ability of the Predicted Particle Properties(P3)scheme in the Weather Research and Forecasting(WRF)model,we simulated a stratiform rainfall event over northern China on 22 May 2017.WRF simulations with two P3 versions,P3-nc and P3-2ice,were evaluated against rain gauge,radar,and aircraft observations.A series of sensitivity experiments were conducted with different collection efficiencies between ice and cloud droplets.The comparison of the precipitation evolution between P3-nc and P3-2ice suggested that both P3 versions overpredicted surface precipitation along the Taihang Mountains but underpredicted precipitation in the localized region on the leeward side.P3-2ice had slightly lower peak precipitation rates and smaller total precipitation amounts than P3-nc,which were closer to the observations.P3-2ice also more realistically reproduced the overall reflectivity structures than P3-nc.A comparison of ice concentrations with observations indicated that P3-nc underestimated aggregation,whereas P3-2ice produced more active aggregation from the self-collection of ice and ice-ice collisions between categories.Efficient aggregation in P3-2ice resulted in lower ice concentrations at heights between 4 and 6 km,which was closer to the observations.In this case,the total precipitation and precipitation pattern were not sensitive to riming.Riming was important in reproducing the location and strength of the embedded convective region through its impact on ice mass flux above the melting level.

关 键 词：predicted particle properties embedded convection RIMING AGGREGATION 

分 类 号：P426.51[天文地球—大气科学及气象学]