Geophysical Research Letters
We show that decadal dynamics of the Pacific Decadal Oscillation (PDO) and the North Pacific Gyre Oscillation (NPGO) are linked through their relationships to ENSO. The PDO and NPGO are the oceanic expression of the two dominant modes of North Pacific atmospheric variability-- the Aleutian Low (AL)...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.420.117 2023-05-15T13:14:57+02:00 Geophysical Research Letters Di Lorenzo E N. Schneider K. M. Cobb J. C. Furtado Submitted To Emanuele Di Lorenzo The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.117 http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.117 http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf text ftciteseerx 2016-01-08T03:58:23Z We show that decadal dynamics of the Pacific Decadal Oscillation (PDO) and the North Pacific Gyre Oscillation (NPGO) are linked through their relationships to ENSO. The PDO and NPGO are the oceanic expression of the two dominant modes of North Pacific atmospheric variability-- the Aleutian Low (AL) and the North Pacific Oscillation (NPO). We compute the two dominant modes of ocean/atmosphere co-variability in the Pacific sector [40S-62N] and find that the first co-variability mode captures the mature phase of ENSO and its atmospheric teleconnections to the AL, while the second co-variability mode captures the NPGO/NPO tropical expression, which leads the ENSO mode by ~8-12 months. The atmospheric projections of these first two modes are used to extract the AL and NPO forcings related to ENSO. These forcings are then integrated with an AR-1 model and lead to skillful reconstructions of the PDO (R=0.65), NPGO (R=0.60), and Pacific surface temperature decadal variance (R=0.4-0.8). We synthesize these results with previous studies and propose a possible framework for quasideterministic decadal oscillations of Pacific climate. 2 Text aleutian low Unknown Pacific |
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We show that decadal dynamics of the Pacific Decadal Oscillation (PDO) and the North Pacific Gyre Oscillation (NPGO) are linked through their relationships to ENSO. The PDO and NPGO are the oceanic expression of the two dominant modes of North Pacific atmospheric variability-- the Aleutian Low (AL) and the North Pacific Oscillation (NPO). We compute the two dominant modes of ocean/atmosphere co-variability in the Pacific sector [40S-62N] and find that the first co-variability mode captures the mature phase of ENSO and its atmospheric teleconnections to the AL, while the second co-variability mode captures the NPGO/NPO tropical expression, which leads the ENSO mode by ~8-12 months. The atmospheric projections of these first two modes are used to extract the AL and NPO forcings related to ENSO. These forcings are then integrated with an AR-1 model and lead to skillful reconstructions of the PDO (R=0.65), NPGO (R=0.60), and Pacific surface temperature decadal variance (R=0.4-0.8). We synthesize these results with previous studies and propose a possible framework for quasideterministic decadal oscillations of Pacific climate. 2 |
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The Pennsylvania State University CiteSeerX Archives |
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Di Lorenzo E N. Schneider K. M. Cobb J. C. Furtado Submitted To Emanuele Di Lorenzo |
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Di Lorenzo E N. Schneider K. M. Cobb J. C. Furtado Submitted To Emanuele Di Lorenzo Geophysical Research Letters |
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Di Lorenzo E N. Schneider K. M. Cobb J. C. Furtado Submitted To Emanuele Di Lorenzo |
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Di Lorenzo E |
title |
Geophysical Research Letters |
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Geophysical Research Letters |
title_full |
Geophysical Research Letters |
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Geophysical Research Letters |
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Geophysical Research Letters |
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geophysical research letters |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.117 http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf |
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Pacific |
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aleutian low |
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aleutian low |
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http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.117 http://www.seas.harvard.edu/climate/seminars/pdfs/dilorenzo.etal.grl.2009.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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