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Design of an array of profiling floats in the North Atlantic from model simulations Guinehut, S.; Larcinol, G.; Le Traon, P.Y. (2002). Design of an array of profiling floats in the North Atlantic from model simulations. J. Mar. Syst. 35(1-2): 1-9. http://dx.doi.org/10.1016/s0924-7963(02)00042-8 In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 57720 [ download pdf ]

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Trefwoorden

AN, North Atlantic Arrays Design Modelling Motion > Water motion > Circulation > Water circulation > Ocean circulation > Thermohaline circulation Profiles > Vertical profiles > Salinity profiles Profiles > Vertical profiles > Temperature profiles Profiling Simulation North Atlantic Ocean [Marine Regions] Marien/Kust

Author keywords

ocean; array design; profiling float; model; North Atlantic Ocean

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Auteurs		Top
Guinehut, S. Larcinol, G. Le Traon, P.Y.

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Abstract

This study aims to analyze the contribution of different profiling float arrays to the description of the 3-D large-scale thermohaline fields. It uses outputs and profiling float simulations derived from a primitive equation model of the North Atlantic Ocean. An optimal interpolation method is used to reconstruct the large-scale and low-frequency variability of the temperature and salinity fields at different depths from various sets of simulated temperature and salinity profiles. Both the covariance function and noise-to-signal ratio are derived from the analysis of the model fields. The differences between the reconstructed fields and the reference (model) fields are then analyzed. As expected, the results are sensitive to the a priori definition of the large-scale and low-frequency reference field. They show, however, that a 3° array with a 10-day cycle (Argo "nominal" resolution) can retrieve most of the variance of the large-scale and low-frequency temperature and salinity signals as observed by a 1/3° primitive equation model. The comparison between Eulerian and Lagrangian arrays shows only a slight deterioration in the results due to the spatial dispersion of the floats and due to the loss of 20 of them which left the model domain during the experiment.

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