Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere
The authors provide a detailed examination of observed ocean–atmosphere interaction in the Southern Hemisphere (SH). Focus is placed on the observed relationships between variability in SH extratropical sea surface temperature (SST) anomalies, the Southern Annular Mode (SAM), and the El Niño–Souther...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.630.6447 2023-05-15T18:25:32+02:00 Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere Laura M. Ciasto David W. J. Thompson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6447 http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6447 http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf text ftciteseerx 2016-01-08T15:28:09Z The authors provide a detailed examination of observed ocean–atmosphere interaction in the Southern Hemisphere (SH). Focus is placed on the observed relationships between variability in SH extratropical sea surface temperature (SST) anomalies, the Southern Annular Mode (SAM), and the El Niño–Southern Oscillation (ENSO). Results are examined separately for the warm (November–April) and cold (May– October) seasons and for monthly and weekly time scales. It is shown that the signatures of the SAM and ENSO in the SH SST field vary as a function of season, both in terms of their amplitudes and structures. The role of surface turbulent and Ekman heat fluxes in driving seasonal variations in the SAM- and ENSO-related SST anomalies is investigated. Analyses of weekly data reveal that variability in the SAM tends to precede anomalies in the SST field by 1 week, and that the e-folding time scale of the SAM-related SST field anomalies is at least 4 months. The persistence of the SAM-related SST anomalies is consistent with the passive thermal response of the Southern Ocean to variations in the SAM, and seasonal variations in the persistence of the SAM-related SST anomalies are consistent with the seasonal cycle in the depth of the ocean mixed layer. 1. Text Southern Ocean Unknown Southern Ocean |
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English |
description |
The authors provide a detailed examination of observed ocean–atmosphere interaction in the Southern Hemisphere (SH). Focus is placed on the observed relationships between variability in SH extratropical sea surface temperature (SST) anomalies, the Southern Annular Mode (SAM), and the El Niño–Southern Oscillation (ENSO). Results are examined separately for the warm (November–April) and cold (May– October) seasons and for monthly and weekly time scales. It is shown that the signatures of the SAM and ENSO in the SH SST field vary as a function of season, both in terms of their amplitudes and structures. The role of surface turbulent and Ekman heat fluxes in driving seasonal variations in the SAM- and ENSO-related SST anomalies is investigated. Analyses of weekly data reveal that variability in the SAM tends to precede anomalies in the SST field by 1 week, and that the e-folding time scale of the SAM-related SST field anomalies is at least 4 months. The persistence of the SAM-related SST anomalies is consistent with the passive thermal response of the Southern Ocean to variations in the SAM, and seasonal variations in the persistence of the SAM-related SST anomalies are consistent with the seasonal cycle in the depth of the ocean mixed layer. 1. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Laura M. Ciasto David W. J. Thompson |
spellingShingle |
Laura M. Ciasto David W. J. Thompson Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
author_facet |
Laura M. Ciasto David W. J. Thompson |
author_sort |
Laura M. Ciasto |
title |
Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
title_short |
Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
title_full |
Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
title_fullStr |
Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
title_full_unstemmed |
Thompson (2008), Observations of large-scale ocean-atmosphere interaction in the Southern Hemisphere |
title_sort |
thompson (2008), observations of large-scale ocean-atmosphere interaction in the southern hemisphere |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6447 http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.6447 http://www.atmos.colostate.edu/ao/ThompsonPapers/CiastoJCL2008.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766207052770705408 |