globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-10-245-2016
Scopus记录号: 2-s2.0-84956652710
论文题名:
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)
作者: Spolaor A; , Opel T; , McConnell J; R; , Maselli O; J; , Spreen G; , Varin C; , Kirchgeorg T; , Fritzsche D; , Saiz-Lopez A; , Vallelonga P
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期:1
起始页码: 245
结束页码: 256
语种: 英语
英文关键词: albedo ; algal community ; atmosphere-ocean coupling ; concentration (composition) ; correlation ; gas exchange ; halogen ; heat transfer ; ice core ; reconstruction ; sea ice ; Arctic Ocean ; Krasnoyarsk [Russian Federation] ; Laptev Sea ; Russian Federation ; Severnaya Zemlya ; algae
英文摘要: The role of sea ice in the Earth climate system is still under debate, although it is known to influence albedo, ocean circulation, and atmosphere-ocean heat and gas exchange. Here we present a reconstruction of 1950 to 1998 AD sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya Zemlya, Russian Arctic). The chemistry of halogens bromine (Br) and iodine (I) is strongly active and influenced by sea ice dynamics, in terms of physical, chemical and biological process. Bromine reacts on the sea ice surface in autocatalyzing "bromine explosion" events, causing an enrichment of the Br/Na ratio and hence a bromine excess (Brexc) in snow compared to that in seawater. Iodine is suggested to be emitted from algal communities growing under sea ice. The results suggest a connection between Brexc and spring sea ice area, as well as a connection between iodine concentration and summer sea ice area. The correlation coefficients obtained between Brexc and spring sea ice (r = 0.44) as well as between iodine and summer sea ice (r = 0.50) for the Laptev Sea suggest that these two halogens could become good candidates for extended reconstructions of past sea ice changes in the Arctic. © Author(s) 2016.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75196
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: Ca'Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, Venice Mestre, Italy; Institute for the Dynamics of Environmental Processes, IDPA-CNR, Via Torino 155, Venice Mestre, Italy; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Periglacial Research Section, Telegrafenberg A43, Potsdam, Germany; Desert Research Institute, Department of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV, United States; Norwegian Polar Institute, Fram Centre, Hjalmar Johansens gt. 14, Tromsø, Norway; Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen Ø, Denmark

Recommended Citation:
Spolaor A,, Opel T,, McConnell J,et al. Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)[J]. Cryosphere,2016-01-01,10(1)
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