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Analysis of the Effect of Optical Properties of Black Carbon on Ozone in an Urban Environment at the Yangtze River Delta,China

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Advances in Atmospheric Sciences 2021年第7期38卷 1153-1164页

作者： Junlin AN Huan LV Min XUE Zefeng ZHANG Bo HU Junxiu WANG Bin ZHU Key Laboratory of Meteorological Disaster Ministry of Education(KLME)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science and TechnologyNanjing 210044China Chinese Academy of Meteorological Sciences Beijing 100081China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029China Inner Mongolia Meteorological Bureau Hohhot 010051China

Black carbon(BC)reduces the photolysis coefficient by absorbing solar radiation,thereby affecting the concentration of ozone(O_(3))near the *** influence of BC on O_(3)has thus received much *** this study,Mie scattering and the tropospheric Ultraviolet and Visible radiation model are used to analyze the effect of BC optical properties on *** with data of O_(3)precursors in Nanjing in 2014,an ekma curve is drawn,and the variations in O_(3)concentration are further investigated using a zero-dimensional box mechanism model(NCAR MM).When O_(3)precursors are unchanged,radiation and O_(3)show a highly similar tendency in response to changing BC optical properties(R=0.997).With the increase of modal radius,the attenuation of fresh BC to radiation and O_(3)first trends upward before *** the mixing process,the attenuation of BC to radiation and O_(3)presents an upward tendency with the increase of relative humidity but decreases rapidly before increasing slowly with increasing thickness of *** addition,mass concentration is another major *** the BC to PM_(2.5)ratio increases to 5%in Nanjing,the radiation decreases by approximately 0.13%-3.71%while O_(3)decreases by approximately 8.13%-13.11%.The radiative effect of BC not only reduces O_(3)concentration but also changes the ekma *** with the NO_(x)control area,radiation has a significant influence on the VOCs control *** aerosol optical depth(AOD)increases by 17.15%,the NO_(x)to VOCs ratio decreases by 8.27%,and part of the original NO_(x)control area is transferred to the VOCs control area.

关键词： black carbon ozone radiation optical properties ekma curve

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