LETTERS The Atlantic–Pacific Seesaw
A global, oceanic teleconnection of salinity, meridional overturning circulation (MOC), and climate of the North Atlantic and North Pacific is proposed. Simulations with a global climate model show that an extraction of freshwater from the Pacific results not only in an increase of salinity there, b...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.573.8071 2023-05-15T17:30:23+02:00 LETTERS The Atlantic–Pacific Seesaw Oleg A. Saenko Andreas Schmittner Andrew J. Weaver The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.8071 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/ap_seesaw_2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.8071 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/ap_seesaw_2004.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/ap_seesaw_2004.pdf text 2003 ftciteseerx 2016-01-08T12:39:34Z A global, oceanic teleconnection of salinity, meridional overturning circulation (MOC), and climate of the North Atlantic and North Pacific is proposed. Simulations with a global climate model show that an extraction of freshwater from the Pacific results not only in an increase of salinity there, but also in a decrease of salinity in the Atlantic. As a result, a Pacific MOC develops while the Atlantic MOC collapses without freshwater perturbation in the Atlantic. Similarly, an input of freshwater to the Atlantic leads not only to a decrease of salinity there, but also to an increase of salinity in the Pacific. The Atlantic MOC collapses, whereas the Pacific MOC develops without freshwater perturbation in the Pacific. The mechanism behind this antiphase Atlantic– Pacific relationship is the positive feedback between ocean circulation and salinity contrasts, originally proposed by Stommel to operate between low and high latitudes. Here the authors show that the same mechanism operates on the Atlantic–Pacific interbasin scale, with the Southern Ocean acting as a pivot point for the interbasin seesaw. The proposed Atlantic–Pacific seesaw effect helps to explain some major out-of-phase oscillations of the climate states between the North Atlantic and North Pacific during the last deglaciation. 1. Text North Atlantic Southern Ocean Unknown Pacific Pivot ENVELOPE(-30.239,-30.239,-80.667,-80.667) Southern Ocean |
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English |
description |
A global, oceanic teleconnection of salinity, meridional overturning circulation (MOC), and climate of the North Atlantic and North Pacific is proposed. Simulations with a global climate model show that an extraction of freshwater from the Pacific results not only in an increase of salinity there, but also in a decrease of salinity in the Atlantic. As a result, a Pacific MOC develops while the Atlantic MOC collapses without freshwater perturbation in the Atlantic. Similarly, an input of freshwater to the Atlantic leads not only to a decrease of salinity there, but also to an increase of salinity in the Pacific. The Atlantic MOC collapses, whereas the Pacific MOC develops without freshwater perturbation in the Pacific. The mechanism behind this antiphase Atlantic– Pacific relationship is the positive feedback between ocean circulation and salinity contrasts, originally proposed by Stommel to operate between low and high latitudes. Here the authors show that the same mechanism operates on the Atlantic–Pacific interbasin scale, with the Southern Ocean acting as a pivot point for the interbasin seesaw. The proposed Atlantic–Pacific seesaw effect helps to explain some major out-of-phase oscillations of the climate states between the North Atlantic and North Pacific during the last deglaciation. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Oleg A. Saenko Andreas Schmittner Andrew J. Weaver |
spellingShingle |
Oleg A. Saenko Andreas Schmittner Andrew J. Weaver LETTERS The Atlantic–Pacific Seesaw |
author_facet |
Oleg A. Saenko Andreas Schmittner Andrew J. Weaver |
author_sort |
Oleg A. Saenko |
title |
LETTERS The Atlantic–Pacific Seesaw |
title_short |
LETTERS The Atlantic–Pacific Seesaw |
title_full |
LETTERS The Atlantic–Pacific Seesaw |
title_fullStr |
LETTERS The Atlantic–Pacific Seesaw |
title_full_unstemmed |
LETTERS The Atlantic–Pacific Seesaw |
title_sort |
letters the atlantic–pacific seesaw |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.8071 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/ap_seesaw_2004.pdf |
long_lat |
ENVELOPE(-30.239,-30.239,-80.667,-80.667) |
geographic |
Pacific Pivot Southern Ocean |
geographic_facet |
Pacific Pivot Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
http://www.cccma.ec.gc.ca/papers/osaenko/PDF/ap_seesaw_2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.8071 http://www.cccma.ec.gc.ca/papers/osaenko/PDF/ap_seesaw_2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766126752479838208 |