气候变化领域集成服务门户(CCPortal): Holocene changes in sea-ice cover and polynya formation along the eastern North Greenland shelf: New insights from biomarker records

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DOI	10.1016/j.quascirev.2020.106173
	Holocene changes in sea-ice cover and polynya formation along the eastern North Greenland shelf: New insights from biomarker records
	Syring N.; Stein R.; Fahl K.; Vahlenkamp M.; Zehnich M.; Spielhagen R.F.; Niessen F.
发表日期	2020
ISSN	0277-3791
卷号	231
英文摘要	Understanding the processes controlling the natural variability of sea ice in the Arctic, one of the most dynamic components of the climate system, can help to constrain the effects of future climate change in this highly sensitive area. For the first time, a high-resolution biomarker study was carried out to reconstruct past sea-ice variability off eastern North Greenland. This area is strongly influenced by cold surface waters and drift ice transported via the East Greenland Current, meltwater pulses from the outlet glaciers of the Northeast Greenland Ice Stream and the build-up of landfast ice. The well-dated Holocene sedimentary section of Core PS93/025 provides insights into variations of the sea-ice conditions (regional and local sea-ice signal), oceanic and atmospheric circulation and the biotic response to these changes. These biomarker records show a reduced to variable sea-ice cover during the early Holocene between 10.2 and 9.3 ka, followed by a steady increase in sea-ice conditions during the mid Holocene. During the last 5–6 ka, sea-ice conditions remained more stable representing a seasonal to marginal sea-ice situation. Based on our biomarker records, stable sea-ice edge conditions, with a fully developed polynya situation occurred since the last 1 ka. © 2020 The Authors
语种	英语
scopus关键词	Biomarkers; Climate change; Glacial geology; Atmospheric circulation; Biomarker records; Dynamic component; East greenland currents; Holocene changes; Natural variability; Northeast Greenland; Sea ice conditions; Sea ice; atmospheric circulation; biomarker; climate change; historical record; Holocene; ice cover; paleoclimate; polynya; sea ice; Arctic; Arctic Ocean; East Greenland Current; Greenland; Greenland Ice Sheet
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151580
作者单位	Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Alten Hafen 26, Bremerhaven, 27568, Germany; Faculty of Geosciences (FB5), University of Bremen, Klagenfurter Str. 4, Bremen, 28359, Germany; Academy of Sciences, Humanities and Literature, Geschwister-Scholl-Str. 2, Mainz, 55131, Germany; GEOMAR Helmholtz Centre for Ocean Research, Wischhofstr. 1-3, Geb. 4, Kiel, 24148, Germany
推荐引用方式 GB/T 7714	Syring N.,Stein R.,Fahl K.,et al. Holocene changes in sea-ice cover and polynya formation along the eastern North Greenland shelf: New insights from biomarker records[J],2020,231.
APA	Syring N..,Stein R..,Fahl K..,Vahlenkamp M..,Zehnich M..,...&Niessen F..(2020).Holocene changes in sea-ice cover and polynya formation along the eastern North Greenland shelf: New insights from biomarker records.Quaternary Science Reviews,231.
MLA	Syring N.,et al."Holocene changes in sea-ice cover and polynya formation along the eastern North Greenland shelf: New insights from biomarker records".Quaternary Science Reviews 231(2020).