DOI: 10.1016/j.atmosenv.2015.03.016
Scopus记录号: 2-s2.0-84926648379
论文题名: Climate effect of black carbon aerosol in a Tibetan Plateau glacier
作者: Yang S ; , Xu B ; , Cao J ; , Zender C ; S ; , Wang M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 111 起始页码: 71
结束页码: 78
语种: 英语
英文关键词: Black carbon
; Glacier melt
; Snow
; Tibetan Plateau
Scopus关键词: Aerosols
; Atmospheric radiation
; Carbon
; Deposition
; Dust
; Fog
; Organic carbon
; Black carbon
; Black carbon aerosol
; Dust concentrations
; Impurity concentration
; Radiative forcings
; Scavenging efficiency
; Snow-melt season
; Tibetan Plateau
; Snow
; black carbon
; snow
; aerosol
; black carbon
; climate effect
; concentration (composition)
; dust
; glacial environment
; organic carbon
; radiative forcing
; snowmelt
; aerosol
; Article
; autumn
; China
; climate
; defense mechanism
; dry deposition
; glacier
; light absorption
; melting point
; priority journal
; radiative forcing
; seasonal variation
; spatiotemporal analysis
; spring
; summer
; wet deposition
; China
; Qinghai-Xizang Plateau
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In the Tibetan Plateau, the black carbon (BC) concentration in surface snow and snow pits has received much attention, whereas the seasonal behavior of aerosol-in-snow concentration, vertical profile, melt-scavenging, and enrichment have received relatively little attention. Here we investigate these processes and their impacts on radiative forcing on the Muji glacier in the westernmost Tibetan Plateau during the 2012 snowmelt season. Increasing impurity concentrations were mostly due to post-deposition effects rather than new deposition. On 5 July, BC concentrations in the surface snow were higher than those of fresh snow, implying enrichment via sublimation and/or melting of previous snow. Fresh snow contained 25ngg-1 BC on 27 July; afterward, BC gradually increased, reaching 730.6ngg-1 in September. BC, organic carbon (OC), and dust concentrations co-varied but differed in magnitude. Melt-scavenging efficiencies were estimated at 0.19±0.05 and 0.04±0.01 for OC and BC, respectively, and the BC in surface snow increased by 20-25 times depending on melt intensity. BC-in-snow radiative forcing (RF) was approximately 2.2Wm-2 for fresh snow and 18.1-20.4Wm-2 for aged snow, and was sometimes reduced by the presence of dust. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81780
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Aerosol Science and oTechnology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Yang S,, Xu B,, Cao J,et al. Climate effect of black carbon aerosol in a Tibetan Plateau glacier[J]. Atmospheric Environment,2015-01-01,111