Decreasing concentrations of carbonaceous aerosols in China from 2003 to 2013

被引：13
作者：
Cheng, Yan [1 ,2 ]
Chow, Judith C. [2 ,3 ]
Watson, John G. [2 ,3 ]
Zhou, Jiamao [2 ]
Liu, Suixin [2 ]
Cao, Junji [2 ,4 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Peoples R China
[2] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
[3] Desert Res Inst, Div Atmospher Sci, Reno, NV USA
[4] Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
SECONDARY ORGANIC AEROSOL; ELEMENTAL CARBON; SOURCE APPORTIONMENT; EC MEASUREMENTS; AIR-POLLUTION; VOC EMISSIONS; BLACK-CARBON; PM2.5; TEMPERATURE; PARTICLES;
D O I：
10.1038/s41598-021-84429-w
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Carbonaceous aerosols were characterized in 19 Chinese cities during winter and summer of 2013. Measurements of organic carbon (OC) and elemental carbon (EC) levels were compared with those from 14 corresponding cities sampled in 2003 to evaluate effects of emission changes over a decade. Average winter and summer OC and EC decreased by 32% and 17%, respectively, from 2003 to 2013, corresponding to nationwide emission control policies implemented since 2006. The extent of carbon reduction varied by season and by location. Larger reductions were found for secondary organic carbon (SOC, 49%) than primary organic carbon (POC, 25%). PM2.5 mass and total carbon concentrations were three to four times higher during winter than summer especially in the northern cities that use coal combustion for heating.
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页数：10
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