Seasonal variation of atmospheric elemental carbon aerosols at Zhongshan Station,East Antarctica

查看全文 作　　者：LIU [1,2]Yan;LI [1]Chuanjin;WANG [1]Xiaoming;DING [1,3]Minghu;DU [1]Zhiheng;SHI [4]Guitao;SUN [5]Bo;KANG [1]Shichang;XIAO [1,6]Cunde 机构地区：[1] State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;[2] College of Resources and Environment,University of Chinese Academy of Sciences(UCAS),Beijing 100049,China;[3] Institute of Meteorological Sciences in Tibetan Plateau and Polar Regions,Chinese Academy of Meteorological Sciences,Beijing 100081,China;[4] Key Laboratory of Geographic Information Science,Ministry of Education,School of Geographic Sciences and State Key Lab of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China;[5] Key Laboratory for Polar Science,MNR,Polar Research Institute of China,Shanghai 200062,China;[6] State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China 出　　处：《Advances in Polar Science》索引2022年第33卷第4期,共12页 基　　金：provided by the State Key Laboratory of Cryospheric Science Supporting Fund in China(Grant no.SKLCS-ZZ-2020);Innovative Research Group in China(Grant no.1110000001);Strategic Priority Research Program of the Chinese Academy of Sciences(Grant no.XDA19070501);National Natural Science Foundation of China(Grant nos.41671063,41701071,41671073)。 摘　　要：Elemental carbon(or black carbon)(EC or BC)aerosols emitted by biomass burning and fossil fuel combustion could cause notable climate forcing.Southern Hemisphere biomass burning emissions have contributed substantially to EC deposition in Antarctica.Here,we present the seasonal variation of EC determined from aerosol samples acquired at Zhongshan Station(ZSS),East Antarctica.The concentration of EC in the atmosphere varied between 0.02 and 257.81 ng·m^(-3)with a mean value of 44.87±48.92 ng·m^(-3).The concentration of EC aerosols reached its peak in winter(59.04 ng·m^(-3))and was lowest(27.26 ng·m^(-3))in summer.Back trajectory analysis showed that biomass burning in southern South America was the major source of the EC found at ZSS,although some of it was derived from southern Australia,especially during winter.The 2019–2020 Australian bush fires had some influence on EC deposition at ZSS,especially during 2019,but the contribution diminished in 2020,leaving southern South America as the dominant source of EC. 关 键 词：Zhongshan Station elemental carbon aerosols seasonal variations