The washout effects of rainfall on atmospheric particulate pollution in two Chinese cities

被引：126

作者：

Guo, Ling-Chuan ^{[1
,2
]}

Zhang, Yonghui ^{[3
]}

Lin, Hualiang ^{[1
]}

Zeng, Weilin ^{[1
]}

Liu, Tao ^{[1
]}

Xiao, Jianpeng ^{[1
]}

Rutherford, Shannon ^{[4
]}

You, Jing ^{[2
]}

Ma, Wenjun ^{[1
]}

机构：

[1] Guangdong Prov Ctr Dis Control & Prevent, Guangdong Prov Inst Publ Hlth, Guangzhou 511430, Guangdong, Peoples R China

[2] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China

[3] Guangdong Prov Ctr Dis Control & Prevent, Guangzhou 511430, Guangdong, Peoples R China

[4] Griffith Univ, Sch Environm, Ctr Environm & Populat Hlth, Brisbane, Qld 4111, Australia

来源：

ENVIRONMENTAL POLLUTION | 2016年 / 215卷

基金：

中国博士后科学基金;

关键词：

Rainfall; Particulate pollution; Washout; Threshold; POLYCYCLIC AROMATIC-HYDROCARBONS; SCAVENGING COEFFICIENTS; SIZE DISTRIBUTION; AIR-POLLUTION; TIME-SERIES; GUANGZHOU; AEROSOL; VARIABILITY; DEPOSITION; URBAN;

D O I：

10.1016/j.envpol.2016.05.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Though rainfall is recognized as one of the main mechanisms to reduce atmospheric particulate pollution, few studies have quantified this effect, particularly the corresponding lag effect and threshold. This study aimed to investigate the association between rainfall and air quality using a distributed lag nonlinear model. Daily data on ambient PM2.5 and PM2.5-10 (particulate matter with an aerodynamic diameter less than 2.5 mu m and from 2.5 to 10 mu m) and meteorological factors were collected in Guangzhou and Xi'an from 2013 to 2014. A better washout effect was found for PM2.5-10 than for PM2.5, and the rainfall thresholds for both particle fractions were 7 mm in Guangzhou and 1 mm in Xi'an. The decrease in PM2.5 levels following rain lasted for 3 and 6 days in Guangzhou and Xi'an, respectively. Rainfall had a better washout effect in Xi'an compared with that in Guangzhou. Findings from this study contribute to a better understanding of the washout effects of rainfall on particulate pollution, which may help to understand the category and sustainability of dust-haze and enforce anthropogenic control measures in time. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：195 / 202

页数：8

共 49 条

[1] Estimated variability of below-cloud aerosol removal by rainfall for observed aerosol size distributions
Andronache, C
[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS, 2003, 3 : 131 - 143
[2] [Anonymous], NAT AMB AIR QUAL STA
[3] [Anonymous], 2008, AEROSOL POLLUTION IM
[4] Development and evaluation of an expression for polydisperse particle scavenging coefficient for the below-cloud scavenging as a function of rain intensity using the moment method
Bae, Soo Ya
Jung, Chang Hoon
Kim, Yong Pyo
[J]. JOURNAL OF AEROSOL SCIENCE, 2006, 37 (11) : 1507 - 1519
[5] Parameterisation of radionuclide deposition in atmospheric long-range transport modelling
Baklanov, A
Sorensen, JH
[J]. PHYSICS AND CHEMISTRY OF THE EARTH PART B-HYDROLOGY OCEANS AND ATMOSPHERE, 2001, 26 (10): : 787 - 799
[6] Influence of meteorology on PM10 trends and variability in Switzerland from 1991 to 2008
Barmpadimos, I.
Hueglin, C.
Keller, J.
Henne, S.
Prevot, A. S. H.
[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS, 2011, 11 (04) : 1813 - 1835
[7] THE SIZE DISTRIBUTION OF RAINDROPS
BEST, AC
[J]. QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1950, 76 (327) : 16 - 36
[8] Rainfall scavenging coefficients for atmospheric nitric acid and nitrate in a subtropical coastal environment
Calderon, Silvia M.
Poor, Noreen D.
Campbell, Scott W.
Tate, Paul
Hartsell, Ben
[J]. ATMOSPHERIC ENVIRONMENT, 2008, 42 (33) : 7757 - 7767
[9] China National Meteorological Bureau, 2015, OBS FOR LEV HAZ
[10] Source apportionment of PM2.5 in Guangzhou combining observation data analysis and chemical transport model simulation
Cui, Hongyang
Chen, Weihua
Dai, Wei
Liu, Huan
Wang, Xuemei
He, Kebin
[J]. ATMOSPHERIC ENVIRONMENT, 2015, 116 : 262 - 271

← 1 2 3 4 5 →