气候变化领域集成服务门户(CCPortal): Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China

CCPortal

DOI	10.1016/j.scitotenv.2017.12.172
	Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China
	Zhao, Suping; Yu, Ye; Yin, Daiying; Qin, Dahe; He, Jianjun; Dong, Longxiang
发表日期	2018
ISSN	0048-9697
起始页码	540
结束页码	557
卷号	624
英文摘要	Spaliotemporal variations of six criteria air pollutants and influencing factors in the city clusters of Sichuan Basin were studied based on real-time hourly concentrations of PM2.5 (the particles with diameters smaller than 2.5 mu m), PM10 (the particles with diameters smaller than 10 mu m), SO2, NO2, CO and O-3 and routine meteorological data during the years from 2015 to 2017. The Sichuan Basin was further categorized into four regions: West, south, northeast Sichuan Basin (WSB, SSB and NESB) and plateau of west Sichuan Basin (PWSB) to better understand regional air pollution characteristics. Heavy air pollution was mainly induced by high PM2.5 or ozone concentrations in the cities clusters of Sichuan Basin. The compound air pollution characteristics existed in WSB with simultaneously high concentrations of PM2.5 and ozone, while PM2.5 concentrations in SSB were the highest among the four regions and especially in the city of Zigong with maximum PM2.5 concentration of 109.3 mu g m(-3) winter. The MDA8 (daily maximum 8-hour average surface O-3 concentrations) more frequently exceeded CAAQS (Chinese Ambient Air Quality Standards) Grade I and II standards in Ziyang, Guang'an and Liangshan than the other cities maybe due to joint effects of industry emissions and regional transportation from surrounding cities. Annual (diurnal) variations of the pollutants with the exception of ozone showed U (flat W) shape, while the ozone exhibited the opposite trends inside Sichuan Basin (WSB, SSB and NESB). Ozone pollution was more dependent on vehicle emissions inside Sichuan Basin, and industry had more important effects on ozone in the cities of PWSB with less vehicles. Severe ozone pollution can be formed easily under the weather conditions of high temperature, long sunshine duration and low RH (relative humidity) inside Sichuan Basin. High ozone concentrations in winter in PWSB may be partly transported from the other surrounding cities. (C) 2017 Elsevier B.V. All rights reserved.
英文关键词	Sichuan Basin; Spatial-temporal variation; Air pollution; Meteorological conditions; Ozone
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158523
作者单位	Zhao, SP (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Zhao, Suping,Yu, Ye,Yin, Daiying,et al. Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China[J],2018,624.
APA	Zhao, Suping,Yu, Ye,Yin, Daiying,Qin, Dahe,He, Jianjun,&Dong, Longxiang.(2018).Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China.SCIENCE OF THE TOTAL ENVIRONMENT,624.
MLA	Zhao, Suping,et al."Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China".SCIENCE OF THE TOTAL ENVIRONMENT 624(2018).