黑碳气溶胶自周边地区向青藏高原输送季节差异的数值模拟  

Seasonal variation of the black carbon aerosols transporting from surrounding areas to Qinghai-Tibet Plateau:simulations with WRF-Chem

作　　者：周云祥 马晓燕 李力[1] 李俊[1] ZHOU Yunxiang;MA Xiaoyan;LI Li;LI Jun(Hubei Meteorological Information and Technology Security Center,Wuhan 430074,China;School of Atmospheric Physics,Key Laboratory for Aerosol-Cloud Precipitation of China Meteorological Administration,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]湖北省气象信息与技术保障中心,武汉430074 [2]南京信息工程大学大气物理学院/中国气象局气溶胶与云降水重点开放实验室,南京210044

出　　处：《气象科学》2024年第5期907-916,共10页Journal of the Meteorological Sciences

基　　金：第二次青藏高原科考基金资助项目(2019QZKK0103);国家自然科学基金资助项目(42061134009,41975002);湖北省气象信息与技术保障中心科研课题。

摘　　要：基于中尺度气象—化学模式WRF-Chem,研究了黑碳气溶胶自周边地区向青藏高原输送的季节性差异,并分析了其可能原因。结果表明:青藏高原近地面平均黑碳气溶胶浓度夏季最低,春季最高。青藏高原当地黑碳气溶胶主要来自于南亚地区,其次是东南亚地区,我国贡献相对较小。春季南亚地区的黑碳气溶胶主要通过干沉降输送至高原,夏季仅有少量的黑碳气溶胶通过湿沉降的方式从我国输送至青藏高原的东北部地区,冬季青藏高原近地面的黑碳气溶胶均通过干沉降从南亚地区输送而来。Based on WRF-Chem model,the seasonal differences in the transportation of black carbon aerosols from surrounding areas to the Qinghai-Tibet Plateau were studied,and the possible reasons were analyzed.Results show that the average concentration of black carbon aerosols near the surface of the Qinghai-Tibet Plateau is the lowest in summer and the highest in spring.The local black carbon aerosols on the Qinghai-Tibet Plateau mainly come from South Asia,followed by Southeast Asia,and China s contribution is relatively small.In spring,the black carbon aerosols from South Asia are mainly transported to the plateau through dry deposition,while in summer,only a small amount of black carbon aerosols are transported from China to the northeast of the Qinghai-Tibet Plateau through wet deposition;in winter,black carbon aerosols near the surface of the Qinghai-Tibet Plateau are transported from South Asia through dry deposition.

关 键 词：WRF-Chem模式 青藏高原 黑碳气溶胶 输送 

分 类 号：P425.55[天文地球—大气科学及气象学]