气候变化领域集成服务门户(CCPortal): Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)

CCPortal

DOI	10.5194/tc-10-245-2016
	Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)
	Spolaor A.; Opel T.; McConnell J.R.; Maselli O.J.; Spreen G.; Varin C.; Kirchgeorg T.; Fritzsche D.; Saiz-Lopez A.; Vallelonga P.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
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.
学科领域	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
语种	英语
scopus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
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119713
作者单位	Ca'Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, Venice Mestre, 30170, Italy; Institute for the Dynamics of Environmental Processes, IDPA-CNR, Via Torino 155, Venice Mestre, 30170, Italy; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Periglacial Research Section, Telegrafenberg A43, Potsdam, 14473, Germany; Desert Research Institute, Department of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV 89512, United States; Norwegian Polar Institute, Fram Centre, Hjalmar Johansens gt. 14, Tromsø, 9296, Norway; Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, 28006, Spain; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen Ø, 2100, Denmark
推荐引用方式 GB/T 7714	Spolaor A.,Opel T.,McConnell J.R.,et al. Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)[J],2016,10(1).
APA	Spolaor A..,Opel T..,McConnell J.R..,Maselli O.J..,Spreen G..,...&Vallelonga P..(2016).Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya).Cryosphere,10(1).
MLA	Spolaor A.,et al."Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)".Cryosphere 10.1(2016).