海盐非均相反应对山东沿海大气O_3浓度的影响  

Impacts of heterogeneous reactions of sea salt and nitrogen-containing gases on ozone in Shandong coastal area

作　　者：黄蕾 薛迪 王娇 陈春强 张洁 张宜升[4] 刘晓环[1,2,3] HUANG Lei;XUE Di;WANG Jiao;CHEN Chun-qiang;ZHANG Jie;ZHANG Yi-sheng;LIU Xiao-huan(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;Key Laboratory of Marine Environment and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China;Laboratory for Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071,China;School of Environment and Municipal Engineering,Qingdao University of Technology Qingdao,Qingdao 266033,China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100 [3]青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室,山东青岛266071 [4]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《中国环境科学》2021年第11期5036-5045,共10页China Environmental Science

基　　金：国家自然科学基金资助项目(U1906215,41305087)。

摘　　要：通过改进WRF-CMAQ模型中非均相反应模块,定量研究了2017年夏季和冬季海盐与含氮气体非均相反应对我国山东沿海地区大气O_(3)浓度的影响.模拟结果表明,考虑海盐气溶胶非均相反应后,山东沿海地区夏季O_(3)小时浓度增加了0.2×10^(-9)~6.6×10^(-9)(0.5%~15.5%),冬季增加了0.8×10^(-9)~15.3×10^(-9)(1.7%~27.4%),Cl NO_2在夏季和冬季分别增加了100×10^(-12)~250×10^(-12),300×10^(-12)~650×10^(-12);夏季O_(3)浓度增加主要集中在山东东部,而冬季O_(3)的增加则覆盖了山东大部分地区,表明海盐非均相反应对冬季O_(3)的影响强度及范围均明显高于夏季.海盐非均相反应引起的O_(3)浓度增加主要发生在日间,特别是8:00~16:00.该反应对渤海及南黄海大气O_(3)浓度也有影响,且在这些海域生成的O_(3)可通过4条传输路径影响山东沿海地区,甚至可影响到济南、菏泽等山东中西部地区(距离山东东部海岸线~350km);海洋大气中O_(3)的传输可造成山东东部沿海O_(3)浓度升高0.2×10^(-9)~15.3×10^(-9),山东中西部O_(3)升高0.3×10^(-9)~6.2×10^(-9).The heterogeneous reactions of nitrogen-containing gases with sea salt and the subsequent production of highly reactive chlorine radicals(Cl·)could contribute to the formation of ozone(O_(3)).The heterogeneous reactions of NO_(2),HNO_(3) and N_(2)O_(5) with sea salt in the Community Multiscale Air Quality(CMAQ)model wao incorporated to simulate their impact on O_(3) concentration over coastal areas of Shandong in summer and winter of 2017.The simulation results indicated that the heterogeneous reactions substantially enhanced O_(3) concentrations up to 0.2×10^(-9)~6.6×10^(-9)(0.5%~15.5%)in summer and 0.8×10^(-9)~15.3×10^(-9)(1.7%~27.4%)in winter,with the nighttime ClNO2 concentrations increased by 100×10^(-12)~250×10^(-12) in summer and 300×10^(-12)~650×10^(-12) in winter.The enhancement of O_(3) in summer was mainly concentrated in eastern Shandong,while in winter it covered most areas of Shandong,implicative of stronger and wider impact of heterogeneous reactions on O_(3) in winter in comparison to summer.The ozone enhancement triggered by the heterogeneous reactions was mainly taken effect during daytime,especially during 8:00~16:00.The influence also covered areas including Bohai Sea and South Yellow Sea,and the enhanced ozone concentration could be transported inland through four pathways,resulting in an increase of 0.2×10^(-9)~15.3×10^(-9) of O_(3) concentration in the eastern coastal areas of Shandong,and 0.3×10^(-9)~6.2×10^(-9) in the central and western areas like Jinan and Heze city,about 350 km away from the eastern coastline of Shandong.

关 键 词：海盐 非均相反应 CMAQ 海洋大气传输 

分 类 号：X513[环境科学与工程—环境工程]