Pacific subtropical cell variability in the SODA 2.0.2/3 assimilation.

Schott, Friedrich, Stramma, Lothar , Wang, Weiqiang, Giese, Benjamin S. and Zantopp, Rainer J. (2008) Pacific subtropical cell variability in the SODA 2.0.2/3 assimilation. Open Access Geophysical Research Letters, 35 (L10607). DOI 10.1029/2008GL033757.

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A new version of SODA, which covers the time period 1958–2005, is used to analyze decadal variability of the Pacific Subtropical Cell (STC) circulation. The analysis is based on transport time series across 9°S and 9°N. At the interannual time scale, STC convergence anomalies decrease during El Niños and increase during La Niñas through Sverdrup transport convergence changes. At decadal time scales, the assimilation shows a reduction of interior STC convergence of about 8 Sv from the 1960s to the 1990s and a subsequent rebound into the early 2000s by a similar amount, in agreement with the STC tendencies reported earlier from geostrophic section analysis, and associated with the occurrence and intensity of ENSO events among the decades analyzed. The results are compared with, and differ significantly from, those obtained by the German ECCO (GECCO) assimilation.

Document Type: Article
Keywords: Pazifik, assimilation, SODA-Modell, subtropische Zelle, subtropical cells; ocean-climate variability
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2008GL033757
ISSN: 0094-8276
Date Deposited: 03 Dec 2008 16:51
Last Modified: 08 Nov 2017 10:29

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