Modeling study of ozone source apportionment over the Pearl River Delta in 2015

被引：55

作者：

Yang, Wenyi ^{[1
,2
]}

Chen, Huansheng ^{[1
]}

Wang, Wending ^{[1
]}

Wu, Jianbin ^{[3
]}

Li, Jie ^{[1
,2
,6
]}

Wang, Zifa ^{[1
,2
,6
]}

Zheng, Junyu ^{[4
]}

Chen, Duohong ^{[5
]}

机构：

[1] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, 40 Hua Yan Li, Beijing 100029, Peoples R China

[2] Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Fujian, Peoples R China

[3] 3Clear Technol Co Ltd, Beijing 100029, Peoples R China

[4] Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Guangdong, Peoples R China

[5] Guangdong Environm Monitoring Ctr, Guangzhou 510308, Guangdong, Peoples R China

[6] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2019年 / 253卷

基金：

国家重点研发计划;

关键词：

Source apportionment; O-3; Pearl river delta; AIR-QUALITY; EMISSION INVENTORY; REGIONAL OZONE; SURFACE OZONE; POLLUTION; SENSITIVITY; EPISODE; AEROSOLS; SYSTEM; CHINA;

D O I：

10.1016/j.envpol.2019.06.091

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In recent years, the concentration of fine particulate matter has decreased gradually in the Pearl River Delta (PRD) region, but the ozone (O-3) concentration remains high and has become the primary air pollutant. In this study, using a three-dimensional numerical model [nested air quality prediction modeling system (NAQPMS)] coupled with an on-line source apportionment module, the contribution of different source regions and source categories to the O-3 concentration in the PRD region was quantified. A comparison with observation data confirmed that the NAQPMS adequately reproduced surface O-3 concentrations in different seasons. Compared with biogenic emissions, anthropogenic precursors play a dominant role in O-3 production. In Guangzhou city, among different source categories, mobile emission is the largest contributor (accounting for approximately 40%), followed by industry emissions (20%-24%). Regional control measures for solvent use and mobile emissions are effective for reducing O-3 concentration. In the PRD region, self-contribution is more significant in daytime (similar to 40%) than in nighttime (similar to 10%) on average. Among the source regions outside PRD, the northern part of Guangdong province, Jiangxi province, and Fujian province are important contributors. Within the PRD region, the self-contribution of each city increases by 12%-32% during O-3 episodes (>80 ppbv) compared with the annual mean contribution. The contribution of the entire PRD region and the entire Guangdong province is 46%-63% and 63%-74% in PRD cities during O(3 )episodes. These results indicate that regional collaboration on emission control within PRD or Guangdong province is effective for reducing O-3 episodes in the PRD region. In addition, because long-range transport from regions outside Guangdong province played an important role in the O(3 )concentration in the PRD region, long-term emission control measures throughout China in subsequent years should be propitious to further reduce the annual O(3 )level and improve air quality in the PRD region. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：393 / 402

页数：10

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