Preprints
https://doi.org/10.5194/esdd-6-2383-2015
https://doi.org/10.5194/esdd-6-2383-2015
17 Nov 2015
 | 17 Nov 2015
Status: this discussion paper is a preprint. It has been under review for the journal Earth System Dynamics (ESD). The manuscript was not accepted for further review after discussion.

Characterization of ocean biogeochemical processes: a generalized total least-squares estimator of the Redfield ratios

V. Guglielmi, C. Goyet, and F. Touratier

Abstract. The chemical composition of the global ocean is governed by biological, chemical and physical processes. These processes interact with each other so that the concentrations of carbon dioxide, oxygen, nitrate and phosphate vary in constant proportions, referred to as the Redfield ratios. We build here the Generalized Total Least-Squares estimator of these ratios. The interest of our approach is twofold: it respects the hydrological characteristics of the studied areas, and it can be applied identically in any area where enough data are available. The tests performed on the Atlantic Ocean highlight a variability of the Redfield ratios, both with geographical location and with depth. This variability emphasizes the importance of local and accurate estimates of Redfield ratios.

V. Guglielmi, C. Goyet, and F. Touratier
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
V. Guglielmi, C. Goyet, and F. Touratier
V. Guglielmi, C. Goyet, and F. Touratier

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Short summary
The chemical composition of the global ocean is governed by biogeochemical processes. These processes interact with each other so that the concentrations of carbon dioxide, oxygen, nitrate and phosphate vary in constant proportions, referred to as the Redfield ratios. We build here the Generalized Total Least-Squares estimator of these ratios. The tests performed on the Atlantic Ocean highlight a variability of the Redfield ratios.
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