Abrupt BOlling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise

被引：64

作者：

Gregoire, Lauren J. ^{[1
]}

Otto-Bliesner, Bette ^{[2
]}

Valdes, Paul J. ^{[3
]}

Ivanovic, Ruza ^{[1
]}

机构：

[1] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England

[2] NCAR, Sch Geog Sci, Boulder, CO USA

[3] Univ Bristol, Bristol, Avon, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 17期

基金：

美国国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

sea level rise; North American ice sheet; abrupt warming; Meltwater Pulse 1a; BOlling; LAST GLACIAL MAXIMUM; CLIMATE RESPONSE; DEGLACIATION; SHEET;

D O I：

10.1002/2016GL070356

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Elucidating the source(s) of Meltwater Pulse 1a, the largest rapid sea level rise caused by ice melt (14-18m in less than 340years, 14,600years ago), is important for understanding mechanisms of rapid ice melt and the links with abrupt climate change. Here we quantify how much and by what mechanisms the North American ice sheet could have contributed to Meltwater Pulse 1a, by driving an ice sheet model with two transient climate simulations of the last 21,000years. Ice sheet perturbed physics ensembles were run to account for model uncertainties, constraining ice extent and volume with reconstructions of 21,000years ago to present. We determine that the North American ice sheet produced 3-4m global mean sea level rise in 340years due to the abrupt BOlling warming, but this response is amplified to 5-6m when it triggers the ice sheet saddle collapse.

引用

页码：9130 / 9137

页数：8

共 20 条

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Kienast, M
Hanebuth, TJJ
Pelejero, C
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GEOLOGY, 2003, 31 (01) : 67 - 70
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GEOPHYSICAL RESEARCH LETTERS, 2015, 42 (10) : 3954 - 3962
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Coonin, Allie N.
Lau, Harriet C. P.
Coulson, Sophie
NATURE GEOSCIENCE, 2025, 18 (03) : 254 - 259
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Deschamps, Pierre
Durand, Nicolas
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Camoin, Gilbert
Thomas, Alexander L.
Henderson, Gideon M.
Okuno, Jun'ichi
Yokoyama, Yusuke
NATURE, 2012, 483 (7391) : 559 - 564
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Carlson, Anders E.
Ullman, David J.
Anslow, Faron S.
He, Feng
Clark, Peter U.
Liu, Zhengyu
Otto-Bliesner, Bette L.
EARTH AND PLANETARY SCIENCE LETTERS, 2012, 315 : 24 - 29
[6] Transient rheology in sea level change: Implications for Meltwater Pulse 1A
Lau, Harriet C. P.
EARTH AND PLANETARY SCIENCE LETTERS, 2023, 609
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Licht, KJ
SEDIMENTARY GEOLOGY, 2004, 165 (3-4) : 343 - 353
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Liu, Jean
Milne, Glenn A.
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Shennan, Ian
NATURE GEOSCIENCE, 2016, 9 (02) : 130 - +
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Liu J.
Milne G.A.
Kopp R.E.
Clark P.U.
Shennan I.
Nature Geoscience, 2016, 9 (2) : 130 - 134
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Lin, Yucheng
Hibbert, Fiona D.
Whitehouse, Pippa L.
Woodroffe, Sarah A.
Purcell, Anthony
Shennan, Ian
Bradley, Sarah L.
NATURE COMMUNICATIONS, 2021, 12 (01)

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