Seasonal cycle of the mixed layer, the seasonal thermocline and the upper-ocean heat storage rate in the Mediterranean Sea derived from observations

Houpert, L. ORCID: https://orcid.org/0000-0001-8750-5631; Testor, P.; Durrieu de Madron, X.; Somot, S.; D’Ortenzio, F.; Estournel, C.; Lavigne, H.. 2015 Seasonal cycle of the mixed layer, the seasonal thermocline and the upper-ocean heat storage rate in the Mediterranean Sea derived from observations. Progress in Oceanography, 132. 333-352. https://doi.org/10.1016/j.pocean.2014.11.004

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Official URL: http://dx.doi.org/10.1016/j.pocean.2014.11.004

Abstract/Summary

We present a Mediterranean climatology (1° × 1° × 12 months) of the mixed layer and of the seasonal thermocline, based on a comprehensive collection of temperature profiles spanning 44 years (1969–2012). The database includes more than 190,000 profiles, merging CTD, MBT/XBT, profiling floats, and gliders observations. This data set is first used to describe the seasonal cycle of the mixed layer depth and temperature, together with the seasonal thermocline depth and averaged temperature, on the whole Mediterranean on a monthly climatological basis. Our analysis discriminates several regions with coherent behaviors, in particular the deep water formation sites, characterized by significant differences in the winter mixing intensity. Heat Storage Rate (HSR) is calculated as the time rate of change of the heat content due to variations in the temperature integrated from the surface down to the base of the seasonal thermocline. For the first time the quantification of heat storage rate in the upper-ocean, based only on in situ oceanographic data, is made for the whole Mediterranean. The spatial and temporal variability of the HSR in the Mediterranean Sea and its link with dynamic structures like oceanic gyres are also discussed.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.pocean.2014.11.004
ISSN:	00796611
Date made live:	05 Feb 2019 17:03 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/522173

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.pocean.2014.11.004

ISSN:

00796611

Date made live:

05 Feb 2019 17:03 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/522173