Decadal variability of two oceans and an atmosphere
A model of the midlatitude, large-scale interaction between the upper ocean and the troposphere is used to illustrate possible mechanisms of connection between the decadal variability in the North Atlantic and in the North Pacific. The two ocean basins are connected to each other only through their...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.218.9596 2023-05-15T17:33:46+02:00 Decadal variability of two oceans and an atmosphere Blanca Gallego Paola Cessi The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.218.9596 http://www-pord.ucsd.edu/~pcessi/blanca2.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.218.9596 http://www-pord.ucsd.edu/~pcessi/blanca2.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www-pord.ucsd.edu/~pcessi/blanca2.pdf text 2001 ftciteseerx 2016-01-07T18:11:08Z A model of the midlatitude, large-scale interaction between the upper ocean and the troposphere is used to illustrate possible mechanisms of connection between the decadal variability in the North Atlantic and in the North Pacific. The two ocean basins are connected to each other only through their coupling to the common, zonally averaged atmosphere. The ocean–atmosphere coupling takes place via wind-driven torques and heat fluxes at the air–sea interface. In this formulation, the decadal variability in each ocean basin consists of ocean– atmosphere modes and arises from a delayed feedback of the upper-ocean heat content onto the wind-driven flow mediated by the atmosphere through the requirements of global heat and momentum balances. The presence of two ocean basins leads to three basic kinds of coupling-induced behavior: phase locking, oscillation death, and chaos. In the phase-locked regime, the western boundary currents of the two basins oscillate in synchrony, with the narrower basin following the wider basin by a small time lag. In the oscillation death solutions, a steady solution is reached, even though each ocean basin, when uncoupled, would have sustained oscillations. In the chaotic regime, the interbasin coupling induces aperiodic fluctuations in both basins characterized by variability at centennial, as well as decadal, timescales. 1. Text North Atlantic Unknown Pacific |
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description |
A model of the midlatitude, large-scale interaction between the upper ocean and the troposphere is used to illustrate possible mechanisms of connection between the decadal variability in the North Atlantic and in the North Pacific. The two ocean basins are connected to each other only through their coupling to the common, zonally averaged atmosphere. The ocean–atmosphere coupling takes place via wind-driven torques and heat fluxes at the air–sea interface. In this formulation, the decadal variability in each ocean basin consists of ocean– atmosphere modes and arises from a delayed feedback of the upper-ocean heat content onto the wind-driven flow mediated by the atmosphere through the requirements of global heat and momentum balances. The presence of two ocean basins leads to three basic kinds of coupling-induced behavior: phase locking, oscillation death, and chaos. In the phase-locked regime, the western boundary currents of the two basins oscillate in synchrony, with the narrower basin following the wider basin by a small time lag. In the oscillation death solutions, a steady solution is reached, even though each ocean basin, when uncoupled, would have sustained oscillations. In the chaotic regime, the interbasin coupling induces aperiodic fluctuations in both basins characterized by variability at centennial, as well as decadal, timescales. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Blanca Gallego Paola Cessi |
spellingShingle |
Blanca Gallego Paola Cessi Decadal variability of two oceans and an atmosphere |
author_facet |
Blanca Gallego Paola Cessi |
author_sort |
Blanca Gallego |
title |
Decadal variability of two oceans and an atmosphere |
title_short |
Decadal variability of two oceans and an atmosphere |
title_full |
Decadal variability of two oceans and an atmosphere |
title_fullStr |
Decadal variability of two oceans and an atmosphere |
title_full_unstemmed |
Decadal variability of two oceans and an atmosphere |
title_sort |
decadal variability of two oceans and an atmosphere |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.218.9596 http://www-pord.ucsd.edu/~pcessi/blanca2.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www-pord.ucsd.edu/~pcessi/blanca2.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.218.9596 http://www-pord.ucsd.edu/~pcessi/blanca2.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766132381528358912 |