北京地区对流层低层臭氧及硫酸盐气溶胶的时空分布  

The temporal and spatial distribution characteristics of the lower tropospheric ozone and sulfate aerosols in Beijing.

作　　者：程宁熹 刘湾湾 刘琼[1] 陈勇航[1] 姚一丰 李君[1] CHENG Ning-xi;LIU Wan-wan;LIU Qiong;CHEN Yong-hang;YAO Yi-feng;LI Jun(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Nanjing Intelligent Environmental Science and Technology Co.,Ltd.,Nanjing 211800,China;School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]南京科略环境科技有限公司,江苏南京211800 [3]上海理工大学环境与建筑学院,上海200093

出　　处：《中国环境科学》2020年第11期4669-4678,共10页China Environmental Science

基　　金：国家自然科学基金资助项目(91644211);中央高校基本科研业务费专硕(2232019D3-27);科技部国家重点研发计划(2018YFC1506305)。

摘　　要：基于OMI/Aura卫星资料,分析了北京地区2007~2016年近10a对流层O3浓度(0~3km)、硫酸盐气溶胶光学厚度(0~2km)、SO2(边界层以内)柱浓度时空演变特征.结果表明,近10a来北京地区O3浓度总体呈现上升趋势,最低值在2007年,浓度为33.65μg/m^3;硫酸盐气溶胶污染总体变化呈现先下降后增长的趋势,2007年硫酸盐气溶胶污染最为严重,2011年污染最轻,对应的AOD值为0.252,但在2014年以后,硫酸盐气溶胶污染又出现增长趋势;SO2浓度在2007~2016年总体呈现下降的变化趋势,且下降趋势明显,最高值为2007年,最低值出现在2016年,最低值比最高值降低了60.42%,但在2011年污染出现反弹.北京O3季节变化明显,夏季高、春秋次之、冬季低;硫酸盐气溶胶污染季节特征与O3相同;SO2污染主要集中在冬季,采暖期污染程度高于非采暖期.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/m^3).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.

关 键 词：臭氧 硫酸盐气溶胶 二氧化硫 光化学氧化性 

分 类 号：X51[环境科学与工程—环境工程]