DOI: 10.1002/jgrd.50130
论文题名: 13C- And 14C-based study of sources and atmospheric processing of water-soluble organic carbon (WSOC) in South Asian aerosols
作者: Kirillova E.N. ; Andersson A. ; Sheesley R.J. ; Kruså M. ; Praveen P.S. ; Budhavant K. ; Safai P.D. ; Rao P.S.P. ; Gustafsson Ö.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 614
结束页码: 626
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Isotopes
; Carbonaceous aerosol
; Cloud formation
; Combustion sources
; Large components
; Source apportionment
; Summer monsoon
; Total suspended particulate matters
; Water-soluble organic carbon
; Atmospheric aerosols
; aerosol composition
; anthropogenic source
; carbon isotope
; combustion
; concentration (composition)
; fossil fuel
; observatory
; organic carbon
; suspended particulate matter
; Hanimaadhoo
; Maldives
英文摘要: Water-soluble organic carbon (WSOC) is typically a large component of carbonaceous aerosols with a high propensity for inducing cloud formation. The sources of WSOC, which may be both of primary and secondary origins, are in general poorly constrained. This study assesses the concentrations and dual-carbon isotope (14C and 13C) signatures of South Asian WSOC during a 15-month continuous campaign in 2008-2009. Total suspended particulate matter samples were collected at Sinhagad (SINH) India and at the Maldives Climate Observatory at Hanimaadhoo (MCOH). Monsoon-driven meteorology yields significant WSOC concentration differences between the dry winter season (0.94 ± 0.43 mg m-3MCOH and 3.6 ± 2.3 mg m-3 SINH) and the summer monsoon season (0.10 ± 0.04 mg m-3 MCOH and 0.35 ± 0.21 mg m-3 SINH). Radiocarbon-based source apportionment of WSOC not only shows the dominance of biogenic/biomass combustion sources but also a substantial anthropogenic fossil-fuel contribution (17 ± 4% MCOH and 23 ± 4% SINH). Aerosols reaching MCOH after long-range over-ocean transport were enriched by 3-4% in d13C-WSOC relative to SINH. This is consistent with particle-phase aging processes influencing the δ13 C-WSOC signal in the South Asian regional receptor atmosphere. © 2012. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64014
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Applied Environmental Science (ITM), Bert Bolin Centre for Climate Research, Stockholm University, 10691, Stockholm, Sweden; Department of Environmental Science, Baylor University, Waco, TX, United States; Hanimaadhoo, Maldives; Center for Clouds,Chemistry and Climate, Scripps Institute of Oceanography, University of California-San Diego, San Diego, CA, United States; Indian Institute of Tropical Meteorology, Pune, MH, India; Vishwakarma Institute of Technology, Pune, MH, India
Recommended Citation:
Kirillova E.N.,Andersson A.,Sheesley R.J.,et al. 13C- And 14C-based study of sources and atmospheric processing of water-soluble organic carbon (WSOC) in South Asian aerosols[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)