Timing of meltwater pulse 1a and climate responses to meltwater injections
[1] The temporal relationship between meltwater pulse 1a (mwp-1a) and the climate history of the last deglaciation remains a subject of debate. By combining the Greenland Ice Core Project d18O ice core record on the new Greenland ice core chronology 2005 timescale with the U/Th-dated Barbados coral...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.554.7564 2023-05-15T16:27:58+02:00 Timing of meltwater pulse 1a and climate responses to meltwater injections The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.7564 http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.7564 http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf has risen by 120 m or more since the Last Glacial Maximum text ftciteseerx 2016-01-08T11:43:37Z [1] The temporal relationship between meltwater pulse 1a (mwp-1a) and the climate history of the last deglaciation remains a subject of debate. By combining the Greenland Ice Core Project d18O ice core record on the new Greenland ice core chronology 2005 timescale with the U/Th-dated Barbados coral record, we conclusively derive that mwp-1a did not coincide with the sharp Bølling warming but instead with the abrupt cooling of the Older Dryas. To evaluate whether there is a relationship between meltwater injections, North Atlantic Deep Water (NADW) formation, and climate change, we present a high-resolution record of NADW flow intensity from Eirik Drift through the last deglaciation. It indicates only a relatively minor 200-year weakening of NADW flow, coincident with mwp-1a. Our compilation of records also indicates that during Heinrich event 1 and the Younger Dryas there were no discernible sea level rises, and yet these periods were characterized by intense NADW slowdowns/shutdowns. Clearly, deepwater formation and climate are not simply controlled by the magnitude or rate of meltwater addition. Instead, our results emphasize that the location of meltwater pulses may be more important, with NADW formation being particularly sensitive to surface Text Greenland Greenland ice core Greenland Ice core Project ice core NADW North Atlantic Deep Water North Atlantic Unknown Greenland |
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English |
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has risen by 120 m or more since the Last Glacial Maximum |
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has risen by 120 m or more since the Last Glacial Maximum Timing of meltwater pulse 1a and climate responses to meltwater injections |
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has risen by 120 m or more since the Last Glacial Maximum |
description |
[1] The temporal relationship between meltwater pulse 1a (mwp-1a) and the climate history of the last deglaciation remains a subject of debate. By combining the Greenland Ice Core Project d18O ice core record on the new Greenland ice core chronology 2005 timescale with the U/Th-dated Barbados coral record, we conclusively derive that mwp-1a did not coincide with the sharp Bølling warming but instead with the abrupt cooling of the Older Dryas. To evaluate whether there is a relationship between meltwater injections, North Atlantic Deep Water (NADW) formation, and climate change, we present a high-resolution record of NADW flow intensity from Eirik Drift through the last deglaciation. It indicates only a relatively minor 200-year weakening of NADW flow, coincident with mwp-1a. Our compilation of records also indicates that during Heinrich event 1 and the Younger Dryas there were no discernible sea level rises, and yet these periods were characterized by intense NADW slowdowns/shutdowns. Clearly, deepwater formation and climate are not simply controlled by the magnitude or rate of meltwater addition. Instead, our results emphasize that the location of meltwater pulses may be more important, with NADW formation being particularly sensitive to surface |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Timing of meltwater pulse 1a and climate responses to meltwater injections |
title_short |
Timing of meltwater pulse 1a and climate responses to meltwater injections |
title_full |
Timing of meltwater pulse 1a and climate responses to meltwater injections |
title_fullStr |
Timing of meltwater pulse 1a and climate responses to meltwater injections |
title_full_unstemmed |
Timing of meltwater pulse 1a and climate responses to meltwater injections |
title_sort |
timing of meltwater pulse 1a and climate responses to meltwater injections |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.7564 http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core NADW North Atlantic Deep Water North Atlantic |
op_source |
http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.7564 http://www.soes.soton.ac.uk/staff/ejr/Rohling-papers/2006-Stanford et al Mwp1a Paleoc.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766017580963725312 |