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Chemical tracer transport in the eastern boundary current system of the North Atlantic

Authors: Álvarez, Marta; Álvarez-Salgado, Xosé Antón;

Chemical tracer transport in the eastern boundary current system of the North Atlantic

Abstract

[ES] La región “MedBox” comprende desde el Estrecho de Gibraltar hasta 22ºW y entre 24ºN y 41ºN. Esta región se ha definido usando datos termohalinos y químicos de tres campañas WOCE llevadas a cabo en 1997/98. La estructura de las masas de agua en la zona se ha resuelto objetivamente utilizando un método multiparamétrico denominado análisis OMP extendido (extended Optimum Multi Parameter analysis). El transporte de volumen se estimó a partir de los datos de las correspondientes campañas y un modelo inverso de cajas que asegura la conservación de la masa y la no formación de aguas profundas en la región. La combinación de los transportes de masa, la distribución de las masas de agua según el OMP y la de propiedades químicas, permitió calcular los transportes de oxígeno, carbono inorgánico, nitrato, fosfato y silicato, además del estudio de los mecanismos que los controlan, su variabilidad vertical y lateral, y la contribución relativa de las distintas masas de agua a estos transportes en latitudes medias del Atlántico Noreste.

[EN] The “MedBox” region, comprising the Strait of Gibraltar to 22ºW and from 24ºN to 41ºN, has been defined using thermohaline and chemical data from three WOCE cruises conducted in 1997/98. The water mass structure of the region was objectively solved by an extended optimum multiparameter (OMP) analysis. Volume transports were estimated from field data and an inverse box model that ensures volume conservation and no deep water formation within the region. The combination of the volume transports, the OMP water mass analysis, and the distributions of chemical parameters allowed for the assessment of the oxygen, inorganic carbon, nitrate, phosphate, and silicate transport mechanisms, their vertical and lateral variability, and the relative contribution of the different water masses in the mid-latitudes of the eastern North Atlantic to these transports.

The first author was funded by a postdoctoral fellowship from the European Social Fund CSIC I3P program. Financial support was provided by the Spanish Ministry for Science and Technology (grant ORCASEX, RYC-2006-001836, Ramón y Cajal program). This work is a contribution to CAIBEX (MEC, CTM2007-66408-C02-01/MAR).

17 páginas, 5 figuras, 3 tablas.

Peer reviewed

Keywords

Dissolved oxygen, Nutrient salts, Análisis multiparamétrico óptimo de mezcla, Atlántico noroeste, Transport, Eastern North Atlantic, Optimum multiparameter mixing analysis, Sales nutrientes, Transporte, Oxígeno disuelto

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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