文献类型：期刊文献

英文题名：Variations of Ground Surface Albedo and its Influence on the Photolysis Rates of No2 in a Typical Urbanized Area of Shanghai

作者：Xiu, Guangli[1,2,4]; Duan, Yusen[1,2,3,4]; Fu, Qingyan[5]; Zhang, Kun[6]; Wang, Qian[7]; Xiao, Linhong[7]; Xiao, Yu[8]; Huo, Juntao[8]; Yang, Fan[10]; Meng, Chen[9]

机构：[1] State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Environmental Protection Key Laboratory for Environmental Standard and Risk Management of Chemical Pollutants, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China; [3] Shanghai Technology Center for Reduction of Pollution and Carbon Emission, Shanghai, 200235, China; [4] Australia-China Center for Air Quality Science and Management, Australia; [5] Shanghai Academy of Environmental Sciences, Shanghai, 200233, China; [6] Shanghai University, Shanghai, 200444, China; [7] 3Clear Technology Co., Ltd., Beijing, 100029, China; [8] Shanghai Environmental Monitoring Center, Shanghai, 200235, China; [9] School of Geographic Sciences, East China Normal University, Shanghai, 200241, China; [10] Pudong New Area Environmental Monitoring Station, Shanghai, 200135, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240275051)

语种：英文

外文关键词：Atmospheric chemistry - Boundary layers - Nitrogen oxides - Ozone layer - Photodissociation - Photolysis - Solar radiation

摘要：Photolysis reactions are commonly regarded as the initial reaction of atmospheric chemistry. The photolysis of NO2 is a crucial reaction contributing to ozone pollution within the planetary boundary layer.The rate of NO2 photolysis depends on factors such as solar actinic flux, the absorption cross-section of NO2, and the quantum yield of the resulting photodissociation products. Ground surface albedo has the potential to amplify the overall J(NO2) value and enhance photochemical reactions. Research conducted at the PUDONG supersite, situated in a downtown areas surrounded by urban structures, revealed an average ground surface albedo of J(NO2) to be 0.146±0.028. This albedo was observed to increase with higher solar zenith angles, surpassing 0.20 when the solar zenith angle exceeded 45°, values notably higher than the parameter utilized in the CAMx model(0.08).The reflection of solar UV radiation by the ground surface can stimulate ozone formation by boosting the photolysis of NO2. Modeling results from F0AM during a typical ozone episode indicated that the average increments in daily maximum ozone concentration were 7.21%,14.52% and 21.91% for albedos of 0.10, 0.15 and 0.20, respectively, compared to albedo of 0.05. WRF-CAMx simulations demonstrated a significant increase in daily maximum ozone concentration with the expansion of urban ground surfaces from 1990 to 2020, highlighting the substantial impact of rising ground surface albedo on exacerbating ozone pollution. ? 2024, The Authors. All rights reserved.