Vertical Evolution of Boundary Layer Volatile Organic Compounds in Summer over the North China Plain and the Differences with Winter

作     者：Shuang WU Guiqian TANG Yinghong WANG Rong MAI Dan YAO Yanyu KANG Qinglu WANG Yuesi WANG Shuang WU;Guiqian TANG;Yinghong WANG;Rong MAI;Dan YAO;Yanyu KANG;Qinglu WANG;Yuesi WANG

作者机构：State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric ChemistryInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Center for Excellence in Regional Atmospheric EnvironmentInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Weather Modification Office of Hebei ProvinceShijiazhuang 050021China University of Chinese Academy of SciencesBeijing 100049China Anhui UniversityHefei 230601China 

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

年 卷 期：2021年第38卷第7期

页      面：1165-1176页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：This work was supported by the National Key R&D Program of China(Grant No.2017YFC0210000) the National Natural Science Foundation of China(Grant Nos.41705113 and 41877312) the Young Talent Project of the Center for Excellence in Regional Atmospheric Environment,Chinese Academy of Sciences(Grant No.CERAE201802) a Beijing Major Science and Technology Project(Grant No.Z181100005418014) 

主　　题：volatile organic compounds vertical profile planetary boundary layer source apportionment 

摘      要：The vertical observation of volatile organic compounds(VOCs)is an important means to clarify the mechanisms of ozone *** explore the vertical evolution of VOCs in summer,a field campaign using a tethered balloon during summer photochemical pollution was conducted in Shijiazhuang from 8 June to 3 July 2019.A total of 192 samples were collected,23 vertical profiles were obtained,and the concentrations of 87 VOCs were *** range of the total VOC concentration was 41-48 ppbv below 600 *** then slightly increased above 600 m,and rose to 58±52 ppbv at 1000 *** proportion of alkanes increased with height,while the proportions of alkenes,halohydrocarbons and acetylene *** proportion of aromatics remained almost unchanged.A comparison with the results of a winter field campaign during 8-16 January 2019 showed that the concentrations of all VOCs in winter except for halohydrocarbons were more than twice those in *** accounted for the same proportion in winter and ***,aromatics,and acetylene accounted for higher proportions in winter,while halohydrocarbons accounted for a higher proportion in *** were five VOC sources in the vertical *** proportions of gasoline vehicular emissions+industrial sources and coal burning were higher in *** proportions of biogenic sources+long-range transport,solvent usage,and diesel vehicular emissions were higher in *** the surface to 1000 m,the proportion of gasoline vehicular emissions+industrial sources gradually increased.