DOI: 10.5194/tc-11-693-2017
Scopus记录号: 2-s2.0-85015790183
论文题名: Bromine, iodine and sodium in surface snow along the 2013 Talos Dome-GV7 traverse (northern Victoria Land, East Antarctica)
作者: Maffezzoli N ; , Spolaor A ; , Barbante C ; , Bertò M ; , Frezzotti M ; , Vallelonga P
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 2 起始页码: 693
结束页码: 705
语种: 英语
英文关键词: aerosol
; air mass
; atmospheric deposition
; bromine
; iodine
; organic compound
; sea ice
; snow cover
; sodium
; Antarctica
; East Antarctica
; Ross Sea
; Southern Ocean
; Talos Dome
; Victoria Land
; algae
英文摘要: Halogen chemistry in the polar regions occurs through the release of halogen elements from different sources. Bromine is primarily emitted from sea salt aerosols and other saline condensed phases associated with sea ice surfaces, while iodine is affected by the release of organic compounds from algae colonies living within the sea ice environment. Measurements of halogen species in polar snow samples are limited to a few sites although there is some evidence that they are related to sea ice extent. We examine here total bromine, iodine and sodium concentrations in a series of 2 m cores collected during a traverse from Talos Dome (72°48'S, 159°06'E) to GV7 (70°41'S, 158°51'E) analyzed by inductively coupled plasma-sector field mass spectrometry (ICP-SFMS) at a resolution of 5cm. We find a distinct seasonality of the bromine enrichment signal in most of the cores, with maxima during the austral spring. Iodine shows average concentrations of 0.04 ppb with little variability. No distinct seasonality is found for iodine and sodium. The transect reveals homogeneous air-to-snow fluxes for the three chemical species along the transect due to competing effects of air masses originating from the Ross Sea and the Southern Ocean. © 2017 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75584
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen Ø, Denmark; Institute for the Dynamics of Environmental Processes, IDPA-CNR, Via Torino 155, Mestre, Venice, Italy; Ca'Foscari University of Venice, Department of Environmental Science, Informatics and Statistics, Via Torino 155, Mestre, Venice, Italy; ENEA, SP. Anguillarese 301, Rome, Italy
Recommended Citation:
Maffezzoli N,, Spolaor A,, Barbante C,et al. Bromine, iodine and sodium in surface snow along the 2013 Talos Dome-GV7 traverse (northern Victoria Land, East Antarctica)[J]. Cryosphere,2017-01-01,11(2)