Characteristics of Aerosol Optical Properties and Their Chemical   Apportionments during CAREBeijing 2006

doi:10.4209/aaqr.2013.06.0203

CORC > 北京大学 > 环境科学与工程学院

	Characteristics of Aerosol Optical Properties and Their Chemical Apportionments during CAREBeijing 2006
	Han, Tingting ; Liu, Xingang ; Zhang, Yuanhang ; Qu, Yu ; Gu, Jianwei ; Ma, Qiang ; Lu, Keding ; Tian, Hezhong ; Chen, Jing ; Zeng, Limin ; Hu, Min ; Zhu, Tong
刊名	aerosol and air quality research
	2014
关键词	Optical properties Diurnal variations Chemical apportionment Beijing ATMOSPHERIC VISIBILITY RADIATIVE PROPERTIES PARTICULATE MATTER CHINA PM2.5 GUANGZHOU SCATTERING POLLUTION SHANGHAI EXTINCTION
DOI	10.4209/aaqr.2013.06.0203
英文摘要	Field campaigns monitoring the aerosol optical properties and chemical components of PM10 were carried out in Beijing in 2006 summer. The average light extinction coefficient b(ext), dry aerosol scattering coefficient b(sp) and aerosol absorption coefficient b(ap) were 895.0 +/- 820.8 Mm(-1), 364.0 +/- 324.3 Mm(-1) and 57.8 +/- 31.1 Mm(-1), respectively. b(ext), b(sp) and b(ap) had the similar increasing trend during the formation process of haze. Pronounced diurnal cycles were observed for omega(550) (aerosol single scattering albedo at 550 nm), b(sp), b(ap) and b(ext). The dry b(sp) was elevated during the daytime with a maximum mean value of 475.8 Mm(-1) (LST 06:00). b(ext), PM2.5 mass concentration and PM2.5/PM10 ratio increased at night due to continuous emissions of pollutants to the lower nocturnal boundary layer, and decreased during the daytime due to convective mixing. b(ap) increased at night, and decreased during the daytime and reached the minimum (37 Mm(-1)) at LST 16:00. The single scattering albedo reached its maximum (0.87) at LST 11:00. This trend was consistent with the SNA (sulfate, nitrate, and ammonium)/PM10 ratio and was contrary to the BC (black carbon)/PM10 ratio, which demonstrated that secondary pollution largely influenced the scattering ability of aerosols. Ammonium sulfate, ammonium nitrate, organic mass, elemental carbon and coarse mass contributed 26.5%, 15.2%, 21.8%, 16.1% and 20.4% to the total extinction coefficient during clean days, and 44.6%, 22.3%, 13.6%, 10.8% and 8.7% during hazy days. The fractional contributions of ammonium sulfate and ammonium nitrate were significantly higher during the hazy time than those during the clean days. While the fractional contributions of organic mass, elemental carbon and coarse mass were lower during the haze time than those during the clean days.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000336731200011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; 5; ARTICLE; liuxingang@bnu.edu.cn; yhzhang@pku.edu.cn; 5; 1431-1442; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/389047]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Han, Tingting,Liu, Xingang,Zhang, Yuanhang,et al. Characteristics of Aerosol Optical Properties and Their Chemical Apportionments during CAREBeijing 2006[J]. aerosol and air quality research,2014.
APA	Han, Tingting.,Liu, Xingang.,Zhang, Yuanhang.,Qu, Yu.,Gu, Jianwei.,...&Zhu, Tong.(2014).Characteristics of Aerosol Optical Properties and Their Chemical Apportionments during CAREBeijing 2006.aerosol and air quality research.
MLA	Han, Tingting,et al."Characteristics of Aerosol Optical Properties and Their Chemical Apportionments during CAREBeijing 2006".aerosol and air quality research (2014).