DOI: 10.5194/tc-11-1213-2017
Scopus记录号: 2-s2.0-85019477699
论文题名: Properties of black carbon and other insoluble light-absorbing particles in seasonal snow of northwestern China
作者: Pu W ; , Wang X ; , Wei H ; , Zhou Y ; , Shi J ; , Hu Z ; , Jin H ; , Chen Q
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 3 起始页码: 1213
结束页码: 1233
语种: 英语
英文关键词: absorption
; black carbon
; chemical analysis
; estimation method
; industrial emission
; organic carbon
; seasonal variation
; snow
; snowpack
; China
; Qinghai
; Xinjiang Uygur
英文摘要: A large field campaign was conducted and 284 snow samples were collected at 38 sites in Xinjiang Province and 6 sites in Qinghai Province across northwestern China from January to February 2012. A spectrophotometer combined with chemical analysis was used to measure the insoluble light-absorbing particles (ILAPs) and chemical components in seasonal snow. The results indicate that the cleanest snow was found in northeastern Xinjiang along the border of China, and it presented an estimated black carbon (CBCest) of approximately 5gg-1. The dirtiest snow presented a CBCest of approximately 450gg-1 near industrial cities in Xinjiang. Overall, the CBCest of most of the snow samples collected in this campaign was in the range of 10-150gg-1. Vertical variations in the snowpack ILAPs indicated a probable shift in emission sources with the progression of winter. An analysis of the fractional contributions to absorption implied that organic carbon (OC) dominated the 450 nm absorption in Qinghai, while the contributions from BC and OC were comparable in Xinjiang. Finally, a positive matrix factorization (PMF) model was run to explore the sources of particulate light absorption, and the results indicated an optimal three-factor/source solution that included industrial pollution, biomass burning, and soil dust. © 2017 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75553
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Key Laboratory for Semi-Arid Climate Change, Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; College of Atmospheric Science, Chengdu University of Information Technology, Plateau Atmospheric and Environment Laboratory of Sichuan Province, Chengdu, China
Recommended Citation:
Pu W,, Wang X,, Wei H,et al. Properties of black carbon and other insoluble light-absorbing particles in seasonal snow of northwestern China[J]. Cryosphere,2017-01-01,11(3)