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/tcd-9-4407-2015
	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.; Vallelonga P.
发表日期	2015
ISSN	19940432
卷号	9 期号:4
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 AD 1950 to 1998 sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya Zemlya, Russian Arctic). The halogens bromine (Br) and iodine (I) are strongly influenced by sea ice processes. Bromine reacts with the sea ice surface in auto-catalyzing "Bromine explosion" events causing an enrichment of the Br / Na ratio and the bromine excess (Brexc) in snow compared to that in seawater. Iodine is 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. These two halogens are therefore good candidates for extended reconstructions of past sea ice changes in the Arctic. © Authors(s) 2015.
学科领域	air-sea interaction; albedo; bromine; concentration (composition); gas exchange; halogen; ice core; iodine; paleoceanography; reconstruction; sea ice; sodium; Arctic Ocean; Laptev Sea; Russian Federation; algae
语种	英语
scopus关键词	air-sea interaction; albedo; bromine; concentration (composition); gas exchange; halogen; ice core; iodine; paleoceanography; reconstruction; sea ice; sodium; Arctic Ocean; Laptev Sea; Russian Federation; algae
来源期刊	Cryosphere Discussions
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119830
作者单位	Ca'Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Santa Marta, Dorsoduro 2137, Venice, 30123, Italy; Institute for the Dynamics of Environmental Processes, IDPA-CNR, Dorsoduro 2137, Venice, 30123, 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; 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],2015,9(4).
APA	Spolaor A..,Opel T..,McConnell J.R..,Maselli O.J..,Spreen G..,...&Vallelonga P..(2015).Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya).Cryosphere Discussions,9(4).
MLA	Spolaor A.,et al."Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)".Cryosphere Discussions 9.4(2015).