Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age
Despite the relative climate stability of the present interglacial, it has been punctuated by several centennial-scale climatic oscillations; the latest of which are often colloquially referred to as the Medieval Climatic Anomaly (MCA) and the Little Ice Age (LIA). The most favored explanation for t...
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Amer Geophysical Union
2014
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Online Access: | https://doi.org/10.1002/2013PA002523 https://archimer.ifremer.fr/doc/00290/40167/39108.pdf https://archimer.ifremer.fr/doc/00290/40167/39109.txt |
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fttriple:oai:gotriple.eu:10670/1.61gts8 2023-05-15T16:29:27+02:00 Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age Moffa-sanchez, Paola Hall, Ian R. Barker, Stephen Thornalley, David J. R. Yashayaev, Igor 2014-03-01 https://doi.org/10.1002/2013PA002523 https://archimer.ifremer.fr/doc/00290/40167/39108.pdf https://archimer.ifremer.fr/doc/00290/40167/39109.txt en eng Amer Geophysical Union doi:10.1002/2013PA002523 10670/1.61gts8 https://archimer.ifremer.fr/doc/00290/40167/39108.pdf https://archimer.ifremer.fr/doc/00290/40167/39109.txt other Archimer, archive institutionnelle de l'Ifremer Paleoceanography (0883-8305) (Amer Geophysical Union), 2014-03-01 , Vol. 29 , N. 3 , P. 160-175 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2014 fttriple https://doi.org/10.1002/2013PA002523 2023-01-22T17:27:09Z Despite the relative climate stability of the present interglacial, it has been punctuated by several centennial-scale climatic oscillations; the latest of which are often colloquially referred to as the Medieval Climatic Anomaly (MCA) and the Little Ice Age (LIA). The most favored explanation for the cause of these anomalies is that they were triggered by variability in solar irradiance and/or volcanic activity and amplified by ocean-atmosphere-sea ice feedbacks. As such, changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC) are widely believed to have been involved in the amplification of such climatic oscillations. The Labrador Sea is a key area of deep water formation. The waters produced here contribute approximately one third of the volume transport of the deep limb of the AMOC and drive changes in the North Atlantic surface hydrography and subpolar gyre circulation. In this study, we present multiproxy reconstructions from a high-resolution marine sediment core located south of Greenland that suggest an increase in the influence of polar waters reaching the Labrador Sea close to MCA-LIA transition. Changes in freshwater forcing may have reduced the formation of Labrador Sea Water and contributed toward the onset of the LIA cooling. Text Greenland Labrador Sea North Atlantic Sea ice Unknown Greenland Paleoceanography 29 3 160 175 |
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geo envir Moffa-sanchez, Paola Hall, Ian R. Barker, Stephen Thornalley, David J. R. Yashayaev, Igor Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
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geo envir |
description |
Despite the relative climate stability of the present interglacial, it has been punctuated by several centennial-scale climatic oscillations; the latest of which are often colloquially referred to as the Medieval Climatic Anomaly (MCA) and the Little Ice Age (LIA). The most favored explanation for the cause of these anomalies is that they were triggered by variability in solar irradiance and/or volcanic activity and amplified by ocean-atmosphere-sea ice feedbacks. As such, changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC) are widely believed to have been involved in the amplification of such climatic oscillations. The Labrador Sea is a key area of deep water formation. The waters produced here contribute approximately one third of the volume transport of the deep limb of the AMOC and drive changes in the North Atlantic surface hydrography and subpolar gyre circulation. In this study, we present multiproxy reconstructions from a high-resolution marine sediment core located south of Greenland that suggest an increase in the influence of polar waters reaching the Labrador Sea close to MCA-LIA transition. Changes in freshwater forcing may have reduced the formation of Labrador Sea Water and contributed toward the onset of the LIA cooling. |
format |
Text |
author |
Moffa-sanchez, Paola Hall, Ian R. Barker, Stephen Thornalley, David J. R. Yashayaev, Igor |
author_facet |
Moffa-sanchez, Paola Hall, Ian R. Barker, Stephen Thornalley, David J. R. Yashayaev, Igor |
author_sort |
Moffa-sanchez, Paola |
title |
Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
title_short |
Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
title_full |
Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
title_fullStr |
Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
title_full_unstemmed |
Surface changes in the eastern Labrador Sea around the onset of the Little Ice Age |
title_sort |
surface changes in the eastern labrador sea around the onset of the little ice age |
publisher |
Amer Geophysical Union |
publishDate |
2014 |
url |
https://doi.org/10.1002/2013PA002523 https://archimer.ifremer.fr/doc/00290/40167/39108.pdf https://archimer.ifremer.fr/doc/00290/40167/39109.txt |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Labrador Sea North Atlantic Sea ice |
genre_facet |
Greenland Labrador Sea North Atlantic Sea ice |
op_source |
Archimer, archive institutionnelle de l'Ifremer Paleoceanography (0883-8305) (Amer Geophysical Union), 2014-03-01 , Vol. 29 , N. 3 , P. 160-175 |
op_relation |
doi:10.1002/2013PA002523 10670/1.61gts8 https://archimer.ifremer.fr/doc/00290/40167/39108.pdf https://archimer.ifremer.fr/doc/00290/40167/39109.txt |
op_rights |
other |
op_doi |
https://doi.org/10.1002/2013PA002523 |
container_title |
Paleoceanography |
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29 |
container_issue |
3 |
container_start_page |
160 |
op_container_end_page |
175 |
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1766019157376106496 |