The temporal and spatial distribution characteristics of the lower tropospheric ozone and sulfate aerosols in Beijing
CHENG Ning-xi1, LIU Wan-wan1,2, LIU Qiong1, CHEN Yong-hang1, YAO Yi-feng1,3, LI Jun1
1. College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;
2. Nanjing Intelligent Environmental Science and Technology Co., Ltd., Nanjing 211800, China;
3. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Based on the OMI/Aura satellite data from 2007 to 2016, the temporal and spatial distribution characteristics of ozone (O3) concentrations (0~3km), sulfate aerosol optical depth (SAOD) (0~2km) and sulfur dioxide (SO2) (within the boundary layer) column concentrations in Beijing were analyzed. The results showed an upward trend in the past 10years with the minimum ozone concentration in 2007 (33.65μg/m3). The values of SAOD decreased from 2007 to 2011 and increased from 2011 to 2016, with a maximum and minimum annual average in 2017 (0.357) and 2011 (0.252), respectively. The concentrations of SO2 decreased from 2007 to 2016 and decreased after 2011. The lowest annual average concentration of SO2 was in 2016, which was 60.42% lower than the highest annual average concentration in 2007. The concentrations of O3 was highest in summer, followed by spring and autumn, and lowest in winter. The seasonal characteristics of SAOD were the same as O3. SO2 occurred most frequently in winter, resulting in the more severe pollution in heating period than in non-heating period.
程宁熹, 刘湾湾, 刘琼, 陈勇航, 姚一丰, 李君. 北京地区对流层低层臭氧及硫酸盐气溶胶的时空分布[J]. 中国环境科学, 2020, 40(11): 4669-4678.
CHENG Ning-xi, LIU Wan-wan, LIU Qiong, CHEN Yong-hang, YAO Yi-feng, LI Jun. The temporal and spatial distribution characteristics of the lower tropospheric ozone and sulfate aerosols in Beijing. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(11): 4669-4678.
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