An ice–climate oscillatory framework for Dansgaard–Oeschger cycles
Intermediate glacial states were characterized by large temperature changes in Greenland and the North Atlantic, referred to as Dansgaard–Oeschger (D–O) variability, with some transitions occurring over a few decades. D–O variability included changes in the strength of the Atlantic meridional overtu...
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:4915 2023-05-15T16:29:30+02:00 An ice–climate oscillatory framework for Dansgaard–Oeschger cycles Menviel, Laurie C. Skinner, Luke C. Tarasov, Lev Tzedakis, Polychronis C. 2020 text http://eprints.esc.cam.ac.uk/4915/ http://eprints.esc.cam.ac.uk/4915/1/s43017-020-00106-y.pdf https://doi.org/10.1038/s43017-020-00106-y en eng Springer Nature http://eprints.esc.cam.ac.uk/4915/1/s43017-020-00106-y.pdf Menviel, Laurie C. and Skinner, Luke C. and Tarasov, Lev and Tzedakis, Polychronis C. (2020) An ice–climate oscillatory framework for Dansgaard–Oeschger cycles. Nature Reviews Earth & Environment. ISSN 2662-138X DOI https://doi.org/10.1038/s43017-020-00106-y <https://doi.org/10.1038/s43017-020-00106-y> 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2020 ftucambridgeesc https://doi.org/10.1038/s43017-020-00106-y 2020-11-12T23:15:45Z Intermediate glacial states were characterized by large temperature changes in Greenland and the North Atlantic, referred to as Dansgaard–Oeschger (D–O) variability, with some transitions occurring over a few decades. D–O variability included changes in the strength of the Atlantic meridional overturning circulation (AMOC), temperature changes of opposite sign and asynchronous timing in each hemisphere, shifts in the mean position of the Intertropical Convergence Zone and variations in atmospheric CO2. Palaeorecords and numerical studies indicate that the AMOC, with a tight coupling to Nordic Seas sea ice, is central to D–O variability, yet, a complete theory remains elusive. In this Review, we synthesize the climatic expression and processes proposed to explain D–O cyclicity. What emerges is an oscillatory framework of the AMOC–sea-ice system, arising through feedbacks involving the atmosphere, cryosphere and the Earth’s biogeochemical system. Palaeoclimate observations indicate that the AMOC might be more sensitive to perturbations than climate models currently suggest. Tighter constraints on AMOC stability are, thus, needed to project AMOC changes over the coming century as a response to anthropogenic carbon emissions. Progress can be achieved by additional observational constraints and numerical simulations performed with coupled climate–ice-sheet models. Article in Journal/Newspaper Greenland Ice Sheet Nordic Seas North Atlantic Sea ice University of Cambridge, Department of Earth Sciences: ESC Publications Greenland Nature Reviews Earth & Environment 1 12 677 693 |
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Open Polar |
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University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems Menviel, Laurie C. Skinner, Luke C. Tarasov, Lev Tzedakis, Polychronis C. An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
description |
Intermediate glacial states were characterized by large temperature changes in Greenland and the North Atlantic, referred to as Dansgaard–Oeschger (D–O) variability, with some transitions occurring over a few decades. D–O variability included changes in the strength of the Atlantic meridional overturning circulation (AMOC), temperature changes of opposite sign and asynchronous timing in each hemisphere, shifts in the mean position of the Intertropical Convergence Zone and variations in atmospheric CO2. Palaeorecords and numerical studies indicate that the AMOC, with a tight coupling to Nordic Seas sea ice, is central to D–O variability, yet, a complete theory remains elusive. In this Review, we synthesize the climatic expression and processes proposed to explain D–O cyclicity. What emerges is an oscillatory framework of the AMOC–sea-ice system, arising through feedbacks involving the atmosphere, cryosphere and the Earth’s biogeochemical system. Palaeoclimate observations indicate that the AMOC might be more sensitive to perturbations than climate models currently suggest. Tighter constraints on AMOC stability are, thus, needed to project AMOC changes over the coming century as a response to anthropogenic carbon emissions. Progress can be achieved by additional observational constraints and numerical simulations performed with coupled climate–ice-sheet models. |
format |
Article in Journal/Newspaper |
author |
Menviel, Laurie C. Skinner, Luke C. Tarasov, Lev Tzedakis, Polychronis C. |
author_facet |
Menviel, Laurie C. Skinner, Luke C. Tarasov, Lev Tzedakis, Polychronis C. |
author_sort |
Menviel, Laurie C. |
title |
An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
title_short |
An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
title_full |
An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
title_fullStr |
An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
title_full_unstemmed |
An ice–climate oscillatory framework for Dansgaard–Oeschger cycles |
title_sort |
ice–climate oscillatory framework for dansgaard–oeschger cycles |
publisher |
Springer Nature |
publishDate |
2020 |
url |
http://eprints.esc.cam.ac.uk/4915/ http://eprints.esc.cam.ac.uk/4915/1/s43017-020-00106-y.pdf https://doi.org/10.1038/s43017-020-00106-y |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Nordic Seas North Atlantic Sea ice |
genre_facet |
Greenland Ice Sheet Nordic Seas North Atlantic Sea ice |
op_relation |
http://eprints.esc.cam.ac.uk/4915/1/s43017-020-00106-y.pdf Menviel, Laurie C. and Skinner, Luke C. and Tarasov, Lev and Tzedakis, Polychronis C. (2020) An ice–climate oscillatory framework for Dansgaard–Oeschger cycles. Nature Reviews Earth & Environment. ISSN 2662-138X DOI https://doi.org/10.1038/s43017-020-00106-y <https://doi.org/10.1038/s43017-020-00106-y> |
op_doi |
https://doi.org/10.1038/s43017-020-00106-y |
container_title |
Nature Reviews Earth & Environment |
container_volume |
1 |
container_issue |
12 |
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677 |
op_container_end_page |
693 |
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1766019195951120384 |