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dc.contributor.authorRevelard, Adèle  Concept link
dc.contributor.authorFrankignoul, Claude  Concept link
dc.contributor.authorKwon, Young-Oh  Concept link
dc.date.accessioned2018-04-26T19:57:09Z
dc.date.available2018-10-12T16:43:46Z
dc.date.issued2018-03-12
dc.identifier.citationJournal of Climate 31 (2018): 2771-2796en_US
dc.identifier.urihttps://hdl.handle.net/1912/10302
dc.descriptionAuthor Posting. © American Meteorological Society, 2018. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 31 (2018): 2771-2796, doi:10.1175/JCLI-D-17-0061.1.en_US
dc.description.abstractThe Generalized Equilibrium Feedback Analysis (GEFA) is used to distinguish the influence of the Oyashio Extension (OE) and the Kuroshio Extension (KE) variability on the atmosphere from 1979 to 2014 from that of the main SST variability modes, using seasonal mean anomalies. Remote SST anomalies are associated with each single oceanic regressor, but the multivariate approach efficiently confines their SST footprints. In autumn [October–December (OND)], the OE meridional shifts are followed by a North Pacific Oscillation (NPO)-like signal. The OE influence is not investigated in winter [December–February (DJF)] because of multicollinearity, but a robust response with a strong signal over the Bering Sea is found in late winter/early spring [February–April (FMA)], a northeastward strengthening of the Aleutian low following a northward OE shift. A robust response to the KE variability is found in autumn, but not in winter and late winter when the KE SST footprint becomes increasingly small and noisy as regressors are added in GEFA. In autumn, a positive PDO is followed by a northward strengthening of the Aleutian low and a southward shift of the storm track in the central Pacific, reflecting the surface heat flux footprint in the central Pacific. In winter, the PDO shifts the maximum baroclinicity and storm track southward, the response strongly tilts westward with height in the North Pacific, and there is a negative NAO-like teleconnection. In late winter, the North Pacific NPO-like response to the PDO interferes negatively with the response to the OE and is only detected when the OE is represented in GEFA. A different PDO influence on the atmospheric circulation is found from 1958 to 1977.en_US
dc.description.sponsorshipThis research has received funding from the European Union 7th Framework Program (FP7 2007-2013) under Grant Agreement 308299 (NACLIM) and from NSF Grants AGS CLD 1035423 and OCE PO 1242989.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JCLI-D-17-0061.1
dc.subjectAtmosphere-ocean interactionen_US
dc.subjectBoundary currentsen_US
dc.subjectPacific decadal oscillationen_US
dc.subjectAtmosphere-ocean interactionen_US
dc.subjectEmpirical orthogonal functionsen_US
dc.subjectRegression analysisen_US
dc.titleA multivariate estimate of the cold season atmospheric response to North Pacific SST variabilityen_US
dc.typeArticleen_US
dc.identifier.doi10.1175/JCLI-D-17-0061.1


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