珠三角地区秋季臭氧生成敏感性时空变化模拟研究

发布时间：2018-02-15 15:55

本文关键词： 珠三角地区臭氧敏感区 WRF/Chem　出处：《南京大学学报(自然科学)》2016年06期 　论文类型：期刊论文

【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]:In this paper, the atmospheric chemistry online coupling model WRF/Chem model is used to simulate the autumn ozone heavy pollution events in the Pearl River Delta region. It is found that under certain meteorological conditions and pollutant discharge, the sensitive areas of VOCs are mainly distributed in the central district of the Pearl River Delta and its downwind direction (for example, Foshan, Zhongshan, Jiangmen, etc.). In Zhuhai, Shenzhen, southern Guangzhou and southern Zhaoqing, the NOx sensitive areas are located in the upwind suburbs of the Pearl River Delta (for example, the ozone sensitive areas in the northern part of Guangzhou, Huizhou and the Pearl River Delta show obvious time-varying characteristics). The range of VOCs sensitive area decreased from 11 to 12 in the morning compared with that at 14 to 15 in the afternoon. The range of VOCs sensitive area increased and increased by 51.4, which was related to the increase of VOCs emission from biological sources, the aging of air mass and the increase of atmospheric dilution and diffusion.
【作者单位】：中山大学环境科学与工程学院;广州市环境科学研究院;佛山市环境监测中心;中山大学大气科学学院;
【基金】：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)
【分类号】：X515

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