Changes in Thermohaline Circulation in Future Climate
Anthropogenically-induced changes of the thermohaline circulation could be potentially important in future climate regimes. By employing a coupled GCM (Parallel Climate Model, PCM), the maximum Atlantic thermohaline circulation weakens by about 3 Sv or 10 % in an idealized forcing (1 % CO2 increase)...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.545.2623 2023-05-15T16:00:37+02:00 Changes in Thermohaline Circulation in Future Climate Aixue Hu G. A. Meehl W. M. Washington A. Dai The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.545.2623 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.545.2623 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://ams.confex.com/ams/pdfpapers/55963.pdf text ftciteseerx 2016-01-08T11:15:19Z Anthropogenically-induced changes of the thermohaline circulation could be potentially important in future climate regimes. By employing a coupled GCM (Parallel Climate Model, PCM), the maximum Atlantic thermohaline circulation weakens by about 3 Sv or 10 % in an idealized forcing (1 % CO2 increase) transient climate experiment at time of CO2 doubling compared with the control run. The weakening of the THC is accompanied by reduced poleward heat transport in mid-latitudes. Further analysis indicates that the weakening of the THC seems mainly caused by the freshening of the surface ocean in the northern North Atlantic region. However, variation of the deep convection intensity in this region is not uniform. In general, it shows a significant weakening of the deep convection in the Labrador Sea region and a mild strengthening of the deep convection at the south of the Denmark Strait region. Because increased CO2 induces warming and freshening effects, the density of the surface water is reduced when it reaches the Labrador Sea. Thus the intensity of deep convection there is weakened. Conversely, increased salinity at the south of Denmark Strait intensifies the deep convection there. Text Denmark Strait Labrador Sea North Atlantic Unknown |
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ftciteseerx |
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English |
description |
Anthropogenically-induced changes of the thermohaline circulation could be potentially important in future climate regimes. By employing a coupled GCM (Parallel Climate Model, PCM), the maximum Atlantic thermohaline circulation weakens by about 3 Sv or 10 % in an idealized forcing (1 % CO2 increase) transient climate experiment at time of CO2 doubling compared with the control run. The weakening of the THC is accompanied by reduced poleward heat transport in mid-latitudes. Further analysis indicates that the weakening of the THC seems mainly caused by the freshening of the surface ocean in the northern North Atlantic region. However, variation of the deep convection intensity in this region is not uniform. In general, it shows a significant weakening of the deep convection in the Labrador Sea region and a mild strengthening of the deep convection at the south of the Denmark Strait region. Because increased CO2 induces warming and freshening effects, the density of the surface water is reduced when it reaches the Labrador Sea. Thus the intensity of deep convection there is weakened. Conversely, increased salinity at the south of Denmark Strait intensifies the deep convection there. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Aixue Hu G. A. Meehl W. M. Washington A. Dai |
spellingShingle |
Aixue Hu G. A. Meehl W. M. Washington A. Dai Changes in Thermohaline Circulation in Future Climate |
author_facet |
Aixue Hu G. A. Meehl W. M. Washington A. Dai |
author_sort |
Aixue Hu |
title |
Changes in Thermohaline Circulation in Future Climate |
title_short |
Changes in Thermohaline Circulation in Future Climate |
title_full |
Changes in Thermohaline Circulation in Future Climate |
title_fullStr |
Changes in Thermohaline Circulation in Future Climate |
title_full_unstemmed |
Changes in Thermohaline Circulation in Future Climate |
title_sort |
changes in thermohaline circulation in future climate |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.545.2623 |
genre |
Denmark Strait Labrador Sea North Atlantic |
genre_facet |
Denmark Strait Labrador Sea North Atlantic |
op_source |
https://ams.confex.com/ams/pdfpapers/55963.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.545.2623 |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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