Surface changes in the North Atlantic meridional overturning circulation during the last millennium
Despite numerous investigations, the dynamical origins of the Medieval Climate Anomaly and the Little Ice Age remain uncertain. A major unresolved issue relating to internal climate dynamics is the mode and tempo of Atlantic meridional overturning circulation variability, and the significance of dec...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.309.9562 2023-05-15T15:03:20+02:00 Surface changes in the North Atlantic meridional overturning circulation during the last millennium Alan D. Wanamaker Paul G. Butler James D. Scourse Jan Heinemeier Jón Eiríksson Karen Luise Knudsen Christopher A. Richardson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.309.9562 http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.309.9562 http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf text ftciteseerx 2016-01-07T22:27:08Z Despite numerous investigations, the dynamical origins of the Medieval Climate Anomaly and the Little Ice Age remain uncertain. A major unresolved issue relating to internal climate dynamics is the mode and tempo of Atlantic meridional overturning circulation variability, and the significance of decadal-to-centennial scale changes in Atlantic meridional overturning circulation strength in regulating the climate of the last millennium. Here we use the timeconstrained high-resolution local radiocarbon reservoir age offset derived from an absolutely dated annually resolved shell chronology spanning the past 1,350 years, to reconstruct changes in surface ocean circulation and climate. The water mass tracer data presented here from the North Icelandic shelf, combined with previously published data from the Arctic and subtropical Atlantic, show that surface Atlantic meridional overturning circulation dynamics likely amplified the relatively warm conditions during the Medieval Climate Anomaly and the relatively cool conditions during the Little Ice Age within the North Atlantic sector. Text Arctic North Atlantic Unknown Arctic |
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ftciteseerx |
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English |
description |
Despite numerous investigations, the dynamical origins of the Medieval Climate Anomaly and the Little Ice Age remain uncertain. A major unresolved issue relating to internal climate dynamics is the mode and tempo of Atlantic meridional overturning circulation variability, and the significance of decadal-to-centennial scale changes in Atlantic meridional overturning circulation strength in regulating the climate of the last millennium. Here we use the timeconstrained high-resolution local radiocarbon reservoir age offset derived from an absolutely dated annually resolved shell chronology spanning the past 1,350 years, to reconstruct changes in surface ocean circulation and climate. The water mass tracer data presented here from the North Icelandic shelf, combined with previously published data from the Arctic and subtropical Atlantic, show that surface Atlantic meridional overturning circulation dynamics likely amplified the relatively warm conditions during the Medieval Climate Anomaly and the relatively cool conditions during the Little Ice Age within the North Atlantic sector. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Alan D. Wanamaker Paul G. Butler James D. Scourse Jan Heinemeier Jón Eiríksson Karen Luise Knudsen Christopher A. Richardson |
spellingShingle |
Alan D. Wanamaker Paul G. Butler James D. Scourse Jan Heinemeier Jón Eiríksson Karen Luise Knudsen Christopher A. Richardson Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
author_facet |
Alan D. Wanamaker Paul G. Butler James D. Scourse Jan Heinemeier Jón Eiríksson Karen Luise Knudsen Christopher A. Richardson |
author_sort |
Alan D. Wanamaker |
title |
Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
title_short |
Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
title_full |
Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
title_fullStr |
Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
title_full_unstemmed |
Surface changes in the North Atlantic meridional overturning circulation during the last millennium |
title_sort |
surface changes in the north atlantic meridional overturning circulation during the last millennium |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.309.9562 http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.309.9562 http://www.bangor.ac.uk/oceansciences/staff/pdf/Wanamaker_etal_2012_Nature.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766335193187090432 |