珠三角地区秋季臭氧生成敏感性时空变化模拟研究

南京大学学报(自然科学版) ›› 2016, Vol. 52 ›› Issue (6): 977–.

珠三角地区秋季臭氧生成敏感性时空变化模拟研究

叶绿萌1，樊少芬2，常　鸣1，司徒淑娉3，王雪梅4*

出版日期:2016-11-20 发布日期:2016-11-20
作者简介: 1.中山大学环境科学与工程学院，广州，510275；2.广州市环境科学研究院，广州，510620；3．佛山市环境监测中心，佛山，528000；4.中山大学大气科学学院，广州，510275
基金资助:
科技部公益性行业(气象)科研专项(GYHY201406031)，国家杰出青年科学基金(41425020)，国家科技部支撑项目(2014BAC21B02)，NSFC－广东联合基金(第二期)超级计算科学应用研究专题，佛山市科学技术局公共服务与能力提升项目(2015AB004371)，佛山市环境保护局项目“佛山市臭氧污染成因与对策分析和大气颗粒物输送通道研究”(GDJAFS2015046G)
收稿日期：2016－08－31
*通讯联系人，Email：eeswxm@mail.sysu.edu.cn

Spatial and temporal distribution of ozone sensitive district in Pearl River Delta region during autumn

Ye Lümeng1，Fan Shaofen2，Chang Ming1，Situ Shuping3，Wang Xuemei4*

Online:2016-11-20 Published:2016-11-20
About author: 1.School of Environmental Science and Engineering，Sun Yatsen University，Guangzhou，510275，China；
2．Guangzhou Research Institute of Environmental Protection，Guangzhou，510620，China；
3．Foshan Municipal Environmental Monitoring Center Station，Foshan，528000，China
4．School of Atmospheric Sciences，Sun Yatsen University，Guangzhou，510275，China

摘要/Abstract

摘要： 应用大气化学在线耦合模式WRF/Chem模式，对发生在珠三角地区秋季臭氧重污染事件进行了模拟．通过敏感性分析，划分臭氧敏感性区域，并研究敏感性区域随时间变化规律与成因．研究发现：在一定的气象条件和污染物排放情况下，VOCs敏感区主要分布在珠三角中心城区及其下风向地区(例如：佛山、中山、江门、珠海、深圳、广州南部以及肇庆南部地区)，而NOx敏感区分布在珠三角的上风向郊区(例如：广州北部、惠州)．珠三角臭氧敏感区表现出明显的时间变化特征，上午11－12时相较下午14－15时，VOCs敏感区域范围减少，NOx敏感区域范围增加且增幅达51.4%，其变化原因与生物源VOCs排放增加、气团老化、大气稀释扩散增加有关．

Abstract: Understanding the evolution of severe ozone pollution events is critical for managing public health issues.The Weather Research and ForecastingChemistry model(WRF/Chem)is used to study a severe ozonepollution episode occurred in autumn 2009 over the Pearl River Delta(PRD)．Through analyzing WRF/Chem sensitivity simulations，NOx and VOCssensitive regimes of ozone chemistry are discerned to assess the mechanisms controlling the time variation of sensitive regimes.The results show that，for given weather and pollutionemission conditions，the VOCssensitive regime is mainly located in the central PRD and in its downwind areas(i.e.，the southern Guangzhou，Foshan，Zhongshan，Zhuhai，Shenzhen，Dongguan，Jiangmen and Zhaoqing)．The NOxsensitive regime is located in the upwind areas(i.e.，northern Guangzhou and Huizhou)．These sensitive regimes are characterized with significant diurnal variations，and some areas that are previously VOCs sensitive shifted to NOxsensitive conditions from morning to afternoon by 51.4%.Such a shift can be attributed to the photochemical aging，increased vertical dilution，and increasing biogenic VOCs emission.

叶绿萌1，樊少芬2，常　鸣1，司徒淑娉3，王雪梅4*. 珠三角地区秋季臭氧生成敏感性时空变化模拟研究[J]. 南京大学学报(自然科学版), 2016, 52(6): 977–.

Ye Lümeng1，Fan Shaofen2，Chang Ming1，Situ Shuping3，Wang Xuemei4*. Spatial and temporal distribution of ozone sensitive district in Pearl River Delta region during autumn[J]. Journal of Nanjing University(Natural Sciences), 2016, 52(6): 977–.

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