Vertical distributions of VOCs in the Tibetan Plateau background region

作     者：Xuanxuan Xue Fugeng Zha Yinghong Wang Yang Zhang Yu Wang Ying Shen Yanyu Kang Dan Yao Guiqian Tang Jianchun Bian Yuesi Wang Xuanxuan Xue;Fugeng Zha;Yinghong Wang;Yang Zhang;Yu Wang;Ying Shen;Yanyu Kang;Dan Yao;Guiqian Tang;Jianchun Bian;Yuesi Wang

作者机构：School of Earth and EnvironmentAnhui University of Science and TechnologyHuainanChina Key Laboratory of Atmospheric Environment and Extreme MeteorologyInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Middle Atmosphere and Global Environment ObservationInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of EnvironmentHenan Normal UniversityXinxiangChina University of Chinese Academy of SciencesBeijingChina 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2024年第17卷第6期

页      面：33-38页

核心收录：

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

基　　金：supported by the second Tibetan Plateau Scientific Expedition and Research Program[No.2019QZKK0604] the National Natural Science Foundation of China[Nos.42177081 and 42171450] the Youth Cross Team Scientific Research Project of the Chinese Academy of Sciences[No.JCTD-2021–10] 

主　　题：VOCs Vertical distributions Boundary layer Source apportionment 

摘      要：Exploring the vertical variation in volatile organic compounds(VOCs)in background regions can provide infor-mation on the spatial distribution of pollutants,providing a scientific basis for atmospheric pollution prevention and control *** 15 August to 5 September 2023,at the Southeast Tibet Mountain Comprehensive Environmental Observation Station(SETS),a tethered balloon was used to sample VOCs every 100 m from the ground to 1000 m.A total of 403 air bag samples were collected,and 39 vertical profiles of VOCs were ***-two VOC species were *** VOC concentration at the SETS did not change significantly verti-cally,and the average VOC concentration was 11.1±2.4 *** main components were alkanes(51.4%),alkenes(18.7%),and halohydrocarbons(18.1%).There was no obvious diurnal change in VOCs and no signif-icant difference between the different *** the surface VOC concentration was less than 10 ppbv,the concentrations,components,and sources of VOCs were evenly distributed vertically,and the main sources of VOCs at different heights were vehicle exhaust and *** the surface VOC concentration exceeded 10 ppbv,the VOC concentration gradually decreased with *** proportion of alkanes in surface VOCs in-creased,and the source was mainly vehicle *** study confirmed that VOCs are vertically homogeneous in the background of the Tibetan Plateau,emphasizing the importance of vehicle emissions as a potential source of VOCs.