Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ...
AbstractThe record of past climate highlights recurrent and intense millennial anomalies, characterised by a distinct pattern of inter-polar temperature change, termed the ‘thermal bipolar seesaw’, which is widely believed to arise from rapid changes in the Atlantic overturning circulation. By forci...
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Online Access: | https://dx.doi.org/10.17863/cam.56238 https://www.repository.cam.ac.uk/handle/1810/309141 |
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ftdatacite:10.17863/cam.56238 2024-02-27T08:35:19+00:00 Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... Skinner, L Menviel, L Broadfield, L Gottschalk, J Greaves, M 2020 https://dx.doi.org/10.17863/cam.56238 https://www.repository.cam.ac.uk/handle/1810/309141 en eng Springer Science and Business Media LLC open.access All rights reserved http://purl.org/coar/access_right/c_abf2 37 Earth Sciences 3709 Physical Geography and Environmental Geoscience 3705 Geology 13 Climate Action article-journal ScholarlyArticle JournalArticle Article 2020 ftdatacite https://doi.org/10.17863/cam.56238 2024-02-01T15:01:03Z AbstractThe record of past climate highlights recurrent and intense millennial anomalies, characterised by a distinct pattern of inter-polar temperature change, termed the ‘thermal bipolar seesaw’, which is widely believed to arise from rapid changes in the Atlantic overturning circulation. By forcing a suppression of North Atlantic convection, models have been able to reproduce many of the general features of the thermal bipolar seesaw; however, they typically fail to capture the full magnitude of temperature change reconstructed using polar ice cores from both hemispheres. Here we use deep-water temperature reconstructions, combined with parallel oxygenation and radiocarbon ventilation records, to demonstrate the occurrence of enhanced deep convection in the Southern Ocean across the particularly intense millennial climate anomaly, Heinrich Stadial 4. Our results underline the important role of Southern Ocean convection as a potential amplifier of Antarctic warming, and atmospheric CO 2 rise, that is ... Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
English |
topic |
37 Earth Sciences 3709 Physical Geography and Environmental Geoscience 3705 Geology 13 Climate Action |
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37 Earth Sciences 3709 Physical Geography and Environmental Geoscience 3705 Geology 13 Climate Action Skinner, L Menviel, L Broadfield, L Gottschalk, J Greaves, M Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
topic_facet |
37 Earth Sciences 3709 Physical Geography and Environmental Geoscience 3705 Geology 13 Climate Action |
description |
AbstractThe record of past climate highlights recurrent and intense millennial anomalies, characterised by a distinct pattern of inter-polar temperature change, termed the ‘thermal bipolar seesaw’, which is widely believed to arise from rapid changes in the Atlantic overturning circulation. By forcing a suppression of North Atlantic convection, models have been able to reproduce many of the general features of the thermal bipolar seesaw; however, they typically fail to capture the full magnitude of temperature change reconstructed using polar ice cores from both hemispheres. Here we use deep-water temperature reconstructions, combined with parallel oxygenation and radiocarbon ventilation records, to demonstrate the occurrence of enhanced deep convection in the Southern Ocean across the particularly intense millennial climate anomaly, Heinrich Stadial 4. Our results underline the important role of Southern Ocean convection as a potential amplifier of Antarctic warming, and atmospheric CO 2 rise, that is ... |
format |
Article in Journal/Newspaper |
author |
Skinner, L Menviel, L Broadfield, L Gottschalk, J Greaves, M |
author_facet |
Skinner, L Menviel, L Broadfield, L Gottschalk, J Greaves, M |
author_sort |
Skinner, L |
title |
Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
title_short |
Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
title_full |
Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
title_fullStr |
Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
title_full_unstemmed |
Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4 ... |
title_sort |
southern ocean convection amplified past antarctic warming and atmospheric co2 rise during heinrich stadial 4 ... |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
https://dx.doi.org/10.17863/cam.56238 https://www.repository.cam.ac.uk/handle/1810/309141 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_rights |
open.access All rights reserved http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.56238 |
_version_ |
1792041819058470912 |