CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
research
Obliquity-driven expansion of North Atlantic sea ice during the last glacial
Authors
Corey J.A. Bradshaw
Barry W. Brook
+10 more
Alan Cooper
Matthew H. England
et al.
Christopher J. Fogwill
Konrad A. Hughen
David K. Hutchinson
Richard T. Jones
Jonathan Palmer
Zoë A. Thomas
Chris S.M. Turney
Publication date
10 December 2015
Publisher
'Wiley'
Doi
Cite
Abstract
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 10,382–10,390, doi:10.1002/2015GL066344.North Atlantic late Pleistocene climate (60,000 to 11,650 years ago) was characterized by abrupt and extreme millennial duration oscillations known as Dansgaard-Oeschger (D-O) events. However, during the Last Glacial Maximum (LGM) 23,000 to 19,000 cal years ago (23 to 19 ka), no D-O events are observed in the Greenland ice cores. Our new analysis of the Greenland δ18O record reveals a switch in the stability of the climate system around 30 ka, suggesting that a critical threshold was passed. Climate system modeling suggests that low axial obliquity at this time caused vastly expanded sea ice in the Labrador Sea, shifting Northern Hemisphere westerly winds south and reducing the strength of meridional overturning circulation. The results suggest that these feedbacks tipped the climate system into full glacial conditions, leading to maximum continental ice growth during the LGM.Australian Research Council2016-06-1
Similar works
Full text
Open in the Core reader
Download PDF
Available Versions
Woods Hole Open Access Server
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:darchive.mblwhoilibrary.or...
Last time updated on 07/08/2019
Southampton (e-Prints Soton)
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:eprints.soton.ac.uk:476637
Last time updated on 15/05/2023