3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation*
The global response to a shutdown of the Atlantic meridional overturning circulation (AMOC) is investigated by conducting a water-hosing experiment with a coupled ocean–atmosphere general circulation model. In the model, the addition of freshwater in the subpolar North Atlantic shuts off the AMOC. T...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.145.9019 2023-05-15T17:29:22+02:00 3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* Lixin Wu Chun Li Chunxue Yang Shang-ping Xie The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.9019 http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.9019 http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf text 2007 ftciteseerx 2016-01-07T15:08:21Z The global response to a shutdown of the Atlantic meridional overturning circulation (AMOC) is investigated by conducting a water-hosing experiment with a coupled ocean–atmosphere general circulation model. In the model, the addition of freshwater in the subpolar North Atlantic shuts off the AMOC. The intense cooling in the extratropical North Atlantic induces a widespread response over the global ocean. In the tropical Atlantic, a sea surface temperature (SST) dipole forms, with cooling north and warming on and south of the equator. This tropical dipole is most pronounced in June–December, displacing the Atlantic intertropical convergence zone southward. In the tropical Pacific, a SST dipole forms in boreal spring in response to the intensified northeast trades across Central America and triggering the development of an El Niño–like warming that peaks on the equator in boreal fall. In the extratropical North Pacific, a basinwide cooling of �1°C takes place, with a general westward increase in intensity. A series of sensitivity experiments are carried out to shed light on the ocean–atmospheric processes for these global teleconnections. The results demonstrate the following: ocean dynamical adjustments are responsible for the formation of the tropical Atlantic dipole; air–sea interaction over the tropical Atlantic is key to the tropical Pacific response; extratropical teleconnection from the North Atlantic is most important for the North Pacific cooling, with the influence from the tropics being secondary; and the subtropical North Pacific cooling propagates southwestward from off Baja California to the western and central equatorial Pacific through the wind–evaporation–SST feedback. 1. Text North Atlantic Unknown Baja Pacific |
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language |
English |
description |
The global response to a shutdown of the Atlantic meridional overturning circulation (AMOC) is investigated by conducting a water-hosing experiment with a coupled ocean–atmosphere general circulation model. In the model, the addition of freshwater in the subpolar North Atlantic shuts off the AMOC. The intense cooling in the extratropical North Atlantic induces a widespread response over the global ocean. In the tropical Atlantic, a sea surface temperature (SST) dipole forms, with cooling north and warming on and south of the equator. This tropical dipole is most pronounced in June–December, displacing the Atlantic intertropical convergence zone southward. In the tropical Pacific, a SST dipole forms in boreal spring in response to the intensified northeast trades across Central America and triggering the development of an El Niño–like warming that peaks on the equator in boreal fall. In the extratropical North Pacific, a basinwide cooling of �1°C takes place, with a general westward increase in intensity. A series of sensitivity experiments are carried out to shed light on the ocean–atmospheric processes for these global teleconnections. The results demonstrate the following: ocean dynamical adjustments are responsible for the formation of the tropical Atlantic dipole; air–sea interaction over the tropical Atlantic is key to the tropical Pacific response; extratropical teleconnection from the North Atlantic is most important for the North Pacific cooling, with the influence from the tropics being secondary; and the subtropical North Pacific cooling propagates southwestward from off Baja California to the western and central equatorial Pacific through the wind–evaporation–SST feedback. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Lixin Wu Chun Li Chunxue Yang Shang-ping Xie |
spellingShingle |
Lixin Wu Chun Li Chunxue Yang Shang-ping Xie 3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
author_facet |
Lixin Wu Chun Li Chunxue Yang Shang-ping Xie |
author_sort |
Lixin Wu |
title |
3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
title_short |
3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
title_full |
3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
title_fullStr |
3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
title_full_unstemmed |
3002 JOURNAL OF CLIMATE VOLUME 21 Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation* |
title_sort |
3002 journal of climate volume 21 global teleconnections in response to a shutdown of the atlantic meridional overturning circulation* |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.9019 http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf |
geographic |
Baja Pacific |
geographic_facet |
Baja Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.9019 http://iprc.soest.hawaii.edu/~xie/amoc-jc08.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766123279612903424 |