Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval
Meltwater pulse 1A (mwp-1A) was a prominent feature of the last deglaciation, which led to a sea-level rise of 20 meters in less than 500 years. Concurrent with mwp-1A was the onset of the Bølling-Allerød interstadial event (14,600 years before the present), which marked the termination of the last...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.571.6995 2023-05-15T13:51:28+02:00 Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval Andrew J Jerry X. Mitrovica The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.6995 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.6995 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf text ftciteseerx 2016-01-08T12:33:41Z Meltwater pulse 1A (mwp-1A) was a prominent feature of the last deglaciation, which led to a sea-level rise of 20 meters in less than 500 years. Concurrent with mwp-1A was the onset of the Bølling-Allerød interstadial event (14,600 years before the present), which marked the termination of the last glacial period. Previous studies have been unable to reconcile a warm Northern Hemi-sphere with mwp-1A originating from the Laurentide or Fennoscandian ice sheets. With the use of a climate model of intermediate complexity, we dem-onstrate that with mwp-1A originating from the Antarctic Ice Sheet, consistent with recent sea-level fingerprinting inferences, the strength of North Atlantic Deep Water (NADW) formation increases, thereby warming the North Atlantic region and providing an explanation for the onset of the Bølling-Allerød warm interval. The established mode of active NADW formation is then able to respond to subsequent freshwater forcing from the Laurentide and Fennoscan-dian ice sheets, setting the stage for the Younger Dryas cold period. The melting of continental ice sheets during the Text Antarc* Antarctic Antarctica Fennoscandian Ice Sheet NADW North Atlantic Deep Water North Atlantic Unknown Antarctic The Antarctic |
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ftciteseerx |
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English |
description |
Meltwater pulse 1A (mwp-1A) was a prominent feature of the last deglaciation, which led to a sea-level rise of 20 meters in less than 500 years. Concurrent with mwp-1A was the onset of the Bølling-Allerød interstadial event (14,600 years before the present), which marked the termination of the last glacial period. Previous studies have been unable to reconcile a warm Northern Hemi-sphere with mwp-1A originating from the Laurentide or Fennoscandian ice sheets. With the use of a climate model of intermediate complexity, we dem-onstrate that with mwp-1A originating from the Antarctic Ice Sheet, consistent with recent sea-level fingerprinting inferences, the strength of North Atlantic Deep Water (NADW) formation increases, thereby warming the North Atlantic region and providing an explanation for the onset of the Bølling-Allerød warm interval. The established mode of active NADW formation is then able to respond to subsequent freshwater forcing from the Laurentide and Fennoscan-dian ice sheets, setting the stage for the Younger Dryas cold period. The melting of continental ice sheets during the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Andrew J Jerry X. Mitrovica |
spellingShingle |
Andrew J Jerry X. Mitrovica Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
author_facet |
Andrew J Jerry X. Mitrovica |
author_sort |
Andrew J |
title |
Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
title_short |
Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
title_full |
Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
title_fullStr |
Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
title_full_unstemmed |
Meltwater Pulse 1A from Antarctica as a Trigger of the Bølling-Allerød Warm Interval |
title_sort |
meltwater pulse 1a from antarctica as a trigger of the bølling-allerød warm interval |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.6995 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Fennoscandian Ice Sheet NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic Antarctica Fennoscandian Ice Sheet NADW North Atlantic Deep Water North Atlantic |
op_source |
http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.6995 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/mwp1a.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766255346538512384 |