Measurement report: Variations and environmental impacts of atmospheric N2O5 concentrations in urban Beijing during the 2022 Winter Olympics
Tiantian Zhang,Peng Zuo,Yi Chen,Tong Liu,Linghan Zeng,Weili Lin,and Chunxiang Ye
Tiantian Zhang
NEAC Key Laboratory of Ecology and Environment in Minority Areas, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
Peng Zuo
State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Yi Chen
State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
Tong Liu
NEAC Key Laboratory of Ecology and Environment in Minority Areas, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
NEAC Key Laboratory of Ecology and Environment in Minority Areas, College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
Institute of National Security, Minzu University of China, Beijing, 100081, China
State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
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During the 2022 Beijing Winter Olympics, we conducted field observations of N2O5. By comparing pre- and post-Olympic pollutant levels, we evaluated the impact of emission reductions on nocturnal chemistry. The results showed that the reactivity of nitric oxide (NO) and volatile organic compounds (VOCs) with NO3 decreased, and that the heterogeneous uptake of N2O5 played a critical role in nocturnal nitrate formation.
During the 2022 Beijing Winter Olympics, we conducted field observations of N2O5. By comparing...