气候变化领域集成服务门户(CCPortal): Sea ice dynamics influence halogen deposition to Svalbard

CCPortal

DOI	10.5194/tc-7-1645-2013
	Sea ice dynamics influence halogen deposition to Svalbard
	Spolaor A.; Gabrieli J.; Martma T.; Kohler J.; Björkman M.B.; Isaksson E.; Varin C.; Vallelonga P.; Plane J.M.C.; Barbante C.
发表日期	2013
ISSN	19940416
卷号	7 期号:5
英文摘要	Sea ice is an important parameter in the climate system and its changes impact upon the polar albedo and atmospheric and oceanic circulation. Iodine (I) and bromine (Br) have been measured in a shallow firn core drilled at the summit of the Holtedahlfonna glacier (Northwest Spitsbergen, Svalbard). Changing I concentrations can be linked to the March-May maximum sea ice extension. Bromine enrichment, indexed to the Br / Na sea water mass ratio, appears to be influenced by changes in the seasonal sea ice area. I is emitted from marine biota and so the retreat of March-May sea ice coincides with enlargement of the open-ocean surface which enhances marine primary production and consequent I emission. The observed Br enrichment could be explained by greater Br emissions during the Br explosions that have been observed to occur mainly above first year sea ice during the early springtime. In this work we present the first comparison between halogens in surface snow and Arctic sea ice extension. Although further investigation is required to characterize potential depositional and post-depositional processes, these preliminary findings suggest that I and Br can be linked to variability in the spring maximum sea ice extension and seasonal sea ice surface area. © Author(s) 2013.
语种	英语
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/120323
作者单位	Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari of Venice, Dorsoduro 2137, Venice, 30123, Italy; Institute for Dynamics of Environmental Processes - CNR, University of Venice, Dorsoduro 2137, Venice, 30123, Italy; Institute of Geology, Tallinn University of Technology, Ehitajate tee 5, Tallinn, 19086, Estonia; Norwegian Polar Institute, Fram Centre, Hjalmar Johansens gt. 14, Tromsø, 9296, Norway; Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, Oslo, 0316, Norway; Centre for Ice and Climate, Niels Bohr Institute, Juliane Maries Vej 30, Copenhagen, 2100, Denmark; Department of Imaging and Applied Physics, Curtin University, Kent St, Bentley, WA 6102, Australia; School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom
推荐引用方式 GB/T 7714	Spolaor A.,Gabrieli J.,Martma T.,et al. Sea ice dynamics influence halogen deposition to Svalbard[J],2013,7(5).
APA	Spolaor A..,Gabrieli J..,Martma T..,Kohler J..,Björkman M.B..,...&Barbante C..(2013).Sea ice dynamics influence halogen deposition to Svalbard.Cryosphere,7(5).
MLA	Spolaor A.,et al."Sea ice dynamics influence halogen deposition to Svalbard".Cryosphere 7.5(2013).