Aerosol-Cloud-Precipitation Interactions in a Closed-cell and Non-homogenous MBL Stratocumulus Cloud

作     者：Xiaojian ZHENG Xiquan DONG Dale MWARD Baike XI Peng WU Yuan WANG Xiaojian ZHENG;Xiquan DONG;Dale M.WARD;Baike XI;Peng WU;Yuan WANG

作者机构：Department of Hydrology and Atmospheric SciencesUniversity of ArizonaTucson 85721AZUSA Pacific Northwest National LaboratoryRichland 99354WAUSA Division of Geological and Planetary SciencesCalifornia Institute of TechnologyPasadena 91125CAUSA 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：2022年第39卷第12期

页      面：2107-2123页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the NSF grants AGS-2031750 and AGS-2031751 supported as part of the “Enabling Aerosol-cloud interactions at GLobal convection-permitting scal ES (EAGLES)” project (74358),funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Earth System Modeling program with the subcontract to the University of Arizona 

主　　题：maritime aerosol cloud and drizzle properties coalescence-scavenging effect of the sub-cloud aerosol and CCN and aerosol-cloud-precipitation interactions 

摘      要：A closed-cell marine stratocumulus case during the Aerosol and Cloud Experiments in the Eastern North Atlantic(ACE-ENA)aircraft field campaign is selected to examine the heterogeneities of cloud and drizzle microphysical properties and the aerosol-cloud-precipitation *** spatial and vertical variabilities of cloud and drizzle microphysics are found in two different sets of flight legs:Leg-1 and Leg-2,which are parallel and perpendicular to the cloud propagation,*** cloud along Leg-2 was close to adiabatic,where cloud-droplet effective radius and liquid water content linearly increase from cloud base to cloud top with less *** cloud along Leg-1 was sub-adiabatic with lower clouddroplet number concentration and larger cloud-droplet effective,but higher drizzle droplet number concentration,larger drizzle droplet median diameter and drizzle liquid water *** heavier drizzle frequency and intensity on Leg-1 were enhanced by the collision-coalescence processes within cloud due to strong *** sub-cloud precipitation rate on Leg-1 was significantly higher than that along *** a result,the sub-cloud accumulation mode aerosols and CCN on Leg-1 were depleted,but the coarse model aerosols *** further leads to a counter-intuitive phenomenon that the CCN is less than cloud-droplet number concentration for *** average CCN loss rates are −3.89 cm^(-3)h^(-1)and −0.77 cm^(-3)h^(-1) on Leg-1 and Leg-2,*** cloud and drizzle heterogeneities inside the same stratocumulus can significantly alter the sub-cloud aerosols and CCN *** it should be treated with caution in the aircraft assessment of aerosol-cloud-precipitation interactions.