DOI: 10.1002/2013JD019496
论文题名: Characteristics of water-soluble inorganic and organic ions in aerosols over the Southern Ocean and coastal East Antarctica during austral summer
作者: Xu G. ; Gao Y. ; Lin Q. ; Li W. ; Chen L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 23 起始页码: 13303
结束页码: 13318
语种: 英语
英文关键词: aerosol size distribution
; coastal Antarctica
; inorganic and organic ions
; Southern Ocean
; water-soluble aerosols
Scopus关键词: Chlorine compounds
; Ions
; Methane
; Oxalic acid
; Size distribution
; Aerosol size distributions
; Antarctica
; Average concentration
; Bimodal size distribution
; Chloride depletion
; Fine-mode particles
; Organic ions
; Southern ocean
; Aerosols
; aerosol composition
; concentration (composition)
; ion
; marine atmosphere
; neutralization
; particle size
; sea salt
; size distribution
; summer
; Antarctica
; East Antarctica
; Southern Ocean
英文摘要: To characterize the concentrations and size distributions of water-soluble organic and inorganic aerosol species, including Na+, non-sea-salt sulfate (nss SO4 2-), methane sulfonate (MSA), oxalate, and succinate, over the Southern Ocean (SO) and coastal East Antarctica (CEA), bulk and size-segregated aerosols were collected from 40°S, 100°E to 69°S, 76°E and between 69°S, 76°E and 66°S, 110°E during a cruise from November 2010 to March 2011. Results show that sea salt was the major component of the total aerosol mass, accounting for 72% over the SO and 56% over CEA. The average concentrations of nss SO4 2- varied from 420 ng m-3 over the SO to 480 ng m-3 over CEA. The concentrations of MSA ranged from 63 to 87 ng m-3 over the SO and from 46 to 170 ng m-3 in CEA. The average concentrations of oxalate were 3.8 ng m-3 over the SO and 2.2 ng m-3 over CEA. The concentrations of formate, acetate, and succinate were lower than those of oxalate. A bimodal size distribution of aerosol mass existed over CEA, peaking at 0.32-0.56 μm and 3.2-5.6 μm. MSA was accumulated in particles of 0.32-0.56 μm over CEA. High chloride depletion was associated with fine-mode particles enriched with nss SO4 2-, MSA, and oxalate. Higher cation-to-anion and NH4 +/nss SO 4 2- ratios in aerosols over CEA compared to that over the SO imply the higher neutralization capacity of the marine atmosphere over CEA. Key Points High MSA/nss SO4 2- over coastal Antarctica affected by high MSA concentration Organic aerosol species were enriched in fine-mode particles Nss SO4 2- MSA, oxalate, and formate in fine mode caused high Cl depletion ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63121
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth and Environmental Sciences, Rutgers University, Newark, NJ 07102, United States; Key Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, State Oceanic Administration, Xiamen, China
Recommended Citation:
Xu G.,Gao Y.,Lin Q.,et al. Characteristics of water-soluble inorganic and organic ions in aerosols over the Southern Ocean and coastal East Antarctica during austral summer[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)