Analysis of heavy pollution episodes in selected cities of northern China

被引：147

作者：

Ji, Dongsheng ^{[1
,2
]}

Wang, Yuesi ^{[1
]}

Wang, Lili ^{[1
]}

Chen, Liangfu ^{[2
]}

Hu, Bo ^{[1
]}

Tang, Guiqian ^{[1
]}

Xin, Jinyuan ^{[1
]}

Song, Tao ^{[1
]}

Wen, Tianxue ^{[1
]}

Sun, Yang ^{[1
]}

Pan, Yuepeng ^{[1
]}

Liu, Zirui ^{[1
]}

机构：

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

[2] Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing Applicat, Beijing, Peoples R China

来源：

ATMOSPHERIC ENVIRONMENT | 2012年 / 50卷

基金：

中国国家自然科学基金;

关键词：

PM10; PM2.5; Northern China; Air pollution episodes; Temperature inversion; PARTICULATE MATTER; AIR-QUALITY; AEROSOL; VISIBILITY; TRENDS;

D O I：

10.1016/j.atmosenv.2011.11.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The analysis of air pollution episodes greatly aids in understanding air pollution and formulating policies to improve air quality. In this study, variations in the distribution of PM10 concentrations were analyzed using data collected from the air quality monitoring network in northern China set up by the Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP, CAS) and the air quality monitoring network of the Beijing Municipal Environmental Protection Bureau (BJEPB). The results showed that there were two severe regional PM10 pollution episodes recorded from October 27, 2009, to November 10, 2009. During these pollution episodes, the highest daily PM10 concentration reached 600 jag m(-3) in Shijiazhuang, which is far above the daily PM10 limit of 150 mu g m(-3). These aerosol pollution episodes were accompanied by regional haze and low visibility ranges. Synoptic patterns and long-range transport were the main factors controlling the regional air pollution processes. Transport patterns affected by synoptic cycle resulted in the spatial and temporal variations of PM10 and PM2.5 during the period studied. Conditions with light winds, temperature inversion and low mixed layer heights contributed to the buildup of PM10 and PM2.5 as well as gas-to-particle processing. In Beijing, the concentrations of sulfate and nitrate accounted for similar to 1/3 of the PK10 mass and similar to 2/3 of the PM2.5 mass, part of which is attributed to the additional secondary conversion of SO42- from SO2 and NO3- from NOx during high-pollution days. Stationary anthropogenic sources were still a major contributor to pollution in these two episodes based on the NOx/SO2 ratios. To address regional air pollution, more attention should be paid to the increases in emissions and the higher frequency of haze days, which are associated with degraded visibility, that have accompanied the rapid economic development in northern China. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.

引用

页码：338 / 348

页数：11

共 31 条

[1]

[Anonymous], ENV CHEM, DOI DOI 10.1016/j.jmarsys.2003.09.009

[2] Relationship of visibility, aerosol optical thickness and aerosol size distribution in an ageing air mass over South-West Germany [J].