气候变化领域集成服务门户(CCPortal): Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat

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DOI	10.5194/cp-17-1-2021
	Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat
	Ashley K.E.; McKay R.; Etourneau J.; Jimenez-Espejo F.J.; Condron A.; Albot A.; Crosta X.; Riesselman C.; Seki O.; Massé G.; Golledge N.R.; Gasson E.; Lowry D.P.; Barrand N.E.; Johnson K.; Bertler N.; Escutia C.; Dunbar R.; Bendle J.A.
发表日期	2021
ISSN	1814-9324
起始页码	65
结束页码	78
卷号	17 期号:1
英文摘要	Over recent decades Antarctic sea-ice extent has increased, alongside widespread ice shelf thinning and freshening of waters along the Antarctic margin. In contrast, Earth system models generally simulate a decrease in sea ice. Circulation of water masses beneath large-cavity ice shelves is not included in current Earth System models and may be a driver of this phenomena. We examine a Holocene sediment core off East Antarctica that records the Neoglacial transition, the last major baseline shift of Antarctic sea ice, and part of a late-Holocene global cooling trend. We provide a multi-proxy record of Holocene glacial meltwater input, sediment transport, and sea-ice variability. Our record, supported by high-resolution ocean modelling, shows that a rapid Antarctic sea-ice increase during the mid-Holocene (∼4.5 ka) occurred against a backdrop of increasing glacial meltwater input and gradual climate warming. We suggest that mid-Holocene ice shelf cavity expansion led to cooling of surface waters and sea-ice growth that slowed basal ice shelf melting. Incorporating this feedback mechanism into global climate models will be important for future projections of Antarctic changes. © 2021 Royal Society of Chemistry. All rights reserved.
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183622
作者单位	School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom; Antarctic Research Centre, Victoria University of Wellington, Wellington, 6140, New Zealand; EPHE/PSL Research University, 4-14 rue Ferrus, Paris, 75014, France; Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, 237-0061, Japan; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Umr 5805 Epoc, Université de Bordeaux, Cnrs, Ephe, Pessac, 33615, France; Department of Geology, University of Otago, Dunedin, 9016, New Zealand; Department of Marine Science, University of Otago, Dunedin, 9016, New Zealand; Institite of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido, 060-0819, Japan; Takuvik, Umi 3376 UL/CNRS, Université Laval, 1045 avenue de la Médecine, Quebec City, QC G1V 0A6, Canada; Gns Science, Avalon, Lower Hutt, 5011, New Zealand; School of Geog...
推荐引用方式 GB/T 7714	Ashley K.E.,McKay R.,Etourneau J.,et al. Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat[J],2021,17(1).
APA	Ashley K.E..,McKay R..,Etourneau J..,Jimenez-Espejo F.J..,Condron A..,...&Bendle J.A..(2021).Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat.Climate of the Past,17(1).
MLA	Ashley K.E.,et al."Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat".Climate of the Past 17.1(2021).