Sea ice in the paleoclimate system: the challenge of reconstructing sea ice from proxies - an introduction

QUATERNARY SCIENCE REVIEWS

卷:79

Editorial Material

de Vernal, Anne¹  Gersonde, Rainer²  Goosse, Hugues³  Seidenkrantz, Marit-Solveig^4,5  Wolff, Eric W.^6,7 

[1] Univ Quebec, GEOTOP, Montreal, PQ H3C 3P8, Canada

[2] Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Bremerhaven, Germany

[3] Univ Catholic Louvain la Neuve, ELIC, TECLIM, Louvain, Belgium

[4] Aarhus Univ, Ctr Past Climate Studies, Dept Geosci, DK-8000 Aarhus C, Denmark

[5] Aarhus Univ, Arctic Climate Ctr, DK-8000 Aarhus C, Denmark

[6] Univ Cambridge, Dept Earth Sci, Cambridge CB2 1TN, England

[7] British Antarctic Survey, Cambridge CB3 0ET, England

关键词: Sea-ice;    Arctic;    Antarctic;    Diatoms;    Dinocysts;    Biomarkers;    Ostracods;    Foraminifers;    Ice cores;    Polar oceans;    Proxies;   

DOI  :  10.1016/j.quascirev.2013.08.009

来源: Elsevier

【 摘 要 】

Sea ice is an important component of the Earth system with complex dynamics imperfectly documented from direct observations, which are primarily limited to the last 40 years. Whereas large amplitude variations of sea ice have been recorded, especially in the Arctic, with a strikingly fast decrease in recent years partly attributed to the impact of anthropogenic climate changes, little is known about the natural variability of the sea ice cover at multi-decadal to multi-millennial time scales. Hence, there is a need to establish longer sea ice time series to document the full range of sea ice variations under natural forcings. To do this, several approaches based on biogenic or geochemical proxies have been developed from marine, ice core and coastal records. The status of the sea ice proxies has been discussed by the Sea Ice Proxy (SIP) working group endorsed by PAGES during a first workshop held at GEOTOP in Montreal. The present volume contains a set of papers addressing various sea ice proxies and their application to large scale sea ice reconstruction. Here we summarize the contents of the volume, including a table of various proxies available in marine sediments and ice cores, with their possibilities and limitations. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free