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Characteristics of the convergence zone at the eastern edge of the Pacific warm pool ArchiMer
Maes, Christophe; Picaut, Joël; Kuroda, Yoshifumi; Ando, Kentaro.
The characteristics of the convergence zone at the eastern edge of the equatorial Pacific warm pool are studied using a compilation of in-situ current and salinity measurements during the period 1992-2001. The displacement of the convergence zone is observed, for the first time, as far west as 140degreesE in the far western Pacific, mainly during La Nina periods, and near 140degreesW in the central Pacific during the 1997-98 El Nino. The convergence zone may be associated with a salinity front dividing the fresh waters of the warm pool from the salty waters upwelled in the central equatorial Pacific. Despite a zonal displacement ranging over about one fifth of the equatorial circumference of the earth, the characteristics of the main parameters involved in...
Tipo: Text Palavras-chave: Nino la nina; El nino; Salinity variability; Southern oscillation; Fresh pool; Sea level; Displacements; Temperature; Model; Ocean.
Ano: 2004 URL: https://archimer.ifremer.fr/doc/00208/31888/30307.pdf
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On the ocean salinity stratification observed at the eastern edge of the equatorial Pacific warm pool ArchiMer
Maes, Christophe.
The observations collected during a series of three oceanographic cruises dedicated to the study of the frontal zone at the eastern edge of the equatorial Pacific warm pool are used to study the role of salinity in the static stratification of the ocean upper layers. By combining physical and biogeochemical data, the position of the frontal zone at the surface could be accurately determined between 157.5 degrees E and 173.4 degrees E. A multiparameter approach is required due to the uncertainty that may result when one parameter is only considered. In the subsurface the thermohaline structures around the frontal zone reveal the predominant role of the ocean salinity stratification within the isothermal layers. However, the actual methods to determine the...
Tipo: Text Palavras-chave: Atmosphere response experiment; Nino southern oscillation; Sea surface temperature; Barrier layer formation; Westerly wind bursts; El nino; Mixed layer; Fresh pool; Toga coare; Variability.
Ano: 2008 URL: https://archimer.ifremer.fr/doc/00208/31886/30312.pdf
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