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Toyoda T., Fujii Y., Kuragano T., Kosugi N., Sasano D., Kamachi M., Ishikawa Y., Masuda S., Sato K., Awaji T., Hernandez Fabrice, Ferry N., Guinehut S., Martin M., Peterson K. A., Good S. A., Valdivieso M., Haines K., Storto A., Masina S., Kohl A., Yin Y. H., Shi L., Alves O., Smith G., Chang Y. S., Vernieres G., Wang X. C., Forget G., Heimbach P., Wang O., Fukumori I., Lee T., Zuo H., Balmaseda M. (2017). Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses. In : 1CLIVAR-GSOP (ed.). Ocean estimation from an ensemble of global ocean reanalyses, consisting of papers from the Ocean Reanalyses Intercomparison Project (ORAIP). Climate Dynamics, 49 (3 (No spécial)), 891-907. ISSN 0930-7575

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Lien direct chez l'éditeur doi:10.1007/s00382-015-2762-3

Titre
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000407244700010
AuteursToyoda T., Fujii Y., Kuragano T., Kosugi N., Sasano D., Kamachi M., Ishikawa Y., Masuda S., Sato K., Awaji T., Hernandez Fabrice, Ferry N., Guinehut S., Martin M., Peterson K. A., Good S. A., Valdivieso M., Haines K., Storto A., Masina S., Kohl A., Yin Y. H., Shi L., Alves O., Smith G., Chang Y. S., Vernieres G., Wang X. C., Forget G., Heimbach P., Wang O., Fukumori I., Lee T., Zuo H., Balmaseda M.
In1CLIVAR-GSOP (ed.). Ocean estimation from an ensemble of global ocean reanalyses, consisting of papers from the Ocean Reanalyses Intercomparison Project (ORAIP)
SourceClimate Dynamics, 2017, 49 (3 (No spécial)), p. 891-907. ISSN 0930-7575
RésuméThe interannual-decadal variability of the wintertime mixed layer depths (MLDs) over the North Pacific is investigated from an empirical orthogonal function (EOF) analysis of an ensemble of global ocean reanalyses. The first leading EOF mode represents the interannual MLD anomalies centered in the eastern part of the central mode water formation region in phase opposition with those in the eastern subtropics and the central Alaskan Gyre. This first EOF mode is highly correlated with the Pacific decadal oscillation index on both the interannual and decadal time scales. The second leading EOF mode represents the MLD variability in the subtropical mode water (STMW) formation region and has a good correlation with the wintertime West Pacific (WP) index with time lag of 3 years, suggesting the importance of the oceanic dynamical response to the change in the surface wind field associated with the meridional shifts of the Aleutian Low. The above MLD variabilities are in basic agreement with previous observational and modeling findings. Moreover the reanalysis ensemble provides uncertainty estimates. The interannual MLD anomalies in the first and second EOF modes are consistently represented by the individual reanalyses and the amplitudes of the variabilities generally exceed the ensemble spread of the reanalyses. Besides, the resulting MLD variability indices, spanning the 1948-2012 period, should be helpful for characterizing the North Pacific climate variability. In particular, a 6-year oscillation including the WP teleconnection pattern in the atmosphere and the oceanic MLD variability in the STMW formation region is first detected.
Plan de classementLimnologie physique / Océanographie physique [032]
Descr. géo.PACIFIQUE
LocalisationFonds IRD [F B010070872]
Identifiant IRDfdi:010070872
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010070872

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