436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean
The response of an atmosphere–ocean general circulation model (AOGCM) to perturbations of freshwater fluxes across the sea surface in the North Atlantic and Southern Ocean is investigated. The purpose of this study is to investigate aspects of the so-called bipolar seesaw where one hemisphere warms...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.143.7973 2023-05-15T14:02:18+02:00 436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean Ronald J. Stouffer Dan Seidov Bernd J. Haupt The Pennsylvania State University CiteSeerX Archives 2006 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.7973 http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.7973 http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf text 2006 ftciteseerx 2016-01-07T15:03:24Z The response of an atmosphere–ocean general circulation model (AOGCM) to perturbations of freshwater fluxes across the sea surface in the North Atlantic and Southern Ocean is investigated. The purpose of this study is to investigate aspects of the so-called bipolar seesaw where one hemisphere warms and the other cools and vice versa due to changes in the ocean meridional overturning. The experimental design is idealized where 1 Sv (1 Sv � 10 6 m 3 s �1) of freshwater is added to the ocean surface for 100 model years and then removed. In one case, the freshwater perturbation is located in the Atlantic Ocean from 50 ° to 70°N. In the second case, it is located south of 60°S in the Southern Ocean. In the case where the North Atlantic surface waters are freshened, the Atlantic thermohaline circulation (THC) and associated northward oceanic heat transport weaken. In the Antarctic surface freshening case, the Atlantic THC is mainly unchanged with a slight weakening toward the end of the integration. This weakening is associated with the spreading of the fresh sea surface anomaly from the Southern Ocean into the rest of the World Ocean. There are two mechanisms that may be responsible for such weakening of the Atlantic THC. First is that the sea surface salinity (SSS) contrast between the North Atlantic and North Pacific is reduced. And, second, when freshwater from the Southern Ocean reaches the high latitudes of the Text Antarc* Antarctic North Atlantic Southern Ocean Unknown Antarctic Pacific Southern Ocean The Antarctic |
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English |
description |
The response of an atmosphere–ocean general circulation model (AOGCM) to perturbations of freshwater fluxes across the sea surface in the North Atlantic and Southern Ocean is investigated. The purpose of this study is to investigate aspects of the so-called bipolar seesaw where one hemisphere warms and the other cools and vice versa due to changes in the ocean meridional overturning. The experimental design is idealized where 1 Sv (1 Sv � 10 6 m 3 s �1) of freshwater is added to the ocean surface for 100 model years and then removed. In one case, the freshwater perturbation is located in the Atlantic Ocean from 50 ° to 70°N. In the second case, it is located south of 60°S in the Southern Ocean. In the case where the North Atlantic surface waters are freshened, the Atlantic thermohaline circulation (THC) and associated northward oceanic heat transport weaken. In the Antarctic surface freshening case, the Atlantic THC is mainly unchanged with a slight weakening toward the end of the integration. This weakening is associated with the spreading of the fresh sea surface anomaly from the Southern Ocean into the rest of the World Ocean. There are two mechanisms that may be responsible for such weakening of the Atlantic THC. First is that the sea surface salinity (SSS) contrast between the North Atlantic and North Pacific is reduced. And, second, when freshwater from the Southern Ocean reaches the high latitudes of the |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ronald J. Stouffer Dan Seidov Bernd J. Haupt |
spellingShingle |
Ronald J. Stouffer Dan Seidov Bernd J. Haupt 436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
author_facet |
Ronald J. Stouffer Dan Seidov Bernd J. Haupt |
author_sort |
Ronald J. Stouffer |
title |
436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
title_short |
436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
title_full |
436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
title_fullStr |
436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
title_full_unstemmed |
436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean |
title_sort |
436 journal of climate volume 20 climate response to external sources of freshwater: north atlantic versus the southern ocean |
publishDate |
2006 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.7973 http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf |
geographic |
Antarctic Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_source |
http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.7973 http://www.gfdl.noaa.gov/reference/bibliography/2007/rjs0701.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766272512734265344 |