A022
Atmospheric Chemistry over the Tibetan Plateau: Measurement, Processing and the Impacts on Climate and Air Quality
Session ID#: 156979
Session Description:
The Tibetan Plateau covers 2.5 million km
2 area with average altitude above 4km. It is referred as the third pole of the world and is representative of an alpine background region of the Earth’s atmosphere. The topography influences the moisture circulation and convection transport of pollutants on a global scale and hence modifies atmospheric photochemistry. For instance, proposed strengthening of atmospheric oxidative capacity lead to an, as-yet, unidentified climate implication. Altitude dependent oxygen deficiency, combined with O
3 pollution, also raise concerns on potential human health impacts for the 3 million residents of the region and over 30 million tourists annually.
For a better scientific understanding of the fundamental atmospheric chemistry and its impacts on climate change & human health, multiple international campaigns, @Tibet field campaigns, were conducted since 2019, to intensively discuss the following essential scientific questions and topics: Oxidative capacity of the atmosphere: first measurement constraint of OH and O3 budgets and evaluation of their climate impacts; Photochemistry and air-soil flux of OH precursors, i.e., reactive nitrogen and atmospheric organic carbon; Aerosol chemistry and physics: molecular mechanisms of secondary organic aerosol formation, new particle formation, optical properties and aerosol - cloud interaction;Exposure assessment of ambient air pollution to short-term and permanent residents of Tibetan Plateau;Health effects of environmental risk factors, e.g., ambient and indoor pollution and oxygen-deficient status, etc, to the short-term and permanent residents of Tibetan plateau.
Index Terms:
0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0317 Chemical kinetic and photochemical properties [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0345 Pollution: urban and regional [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
Primary Convener: Chunxiang Ye, Peking University, Beijing, China and Wei Nie
Conveners: Wei Nie, Nanjing University, School of Atmospheric Sciences, Nanjing, China, Jicheng Gong, Peking University, Beijing, China, Jianshu Wang, Peking University, Beijng, China and Wei Nie
Composition and Sources of Heavy Metals in Aerosol at a Remote Site of Southeast Tibetan Plateau, China (1081107)
Yinbo Xu1, Qing Li1, Shiyou Xie1, Chao Zhang2, Fangping Yan3, Yixi Liu4, Kang Shichang5, Shaopeng Gao6 and Chaoliu Li3, (1)Southwest University, Chongqing, China, (2)University of Chinese Academy of Sciences, Beijing, China, (3)State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (4)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (5)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, China, (6)Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
