Articles | Volume 18, issue 23
https://doi.org/10.5194/bg-18-6147-2021
https://doi.org/10.5194/bg-18-6147-2021
Research article
 | 
30 Nov 2021
Research article |  | 30 Nov 2021

Deep chlorophyll maximum and nutricline in the Mediterranean Sea: emerging properties from a multi-platform assimilated biogeochemical model experiment

Anna Teruzzi, Giorgio Bolzon, Laura Feudale, and Gianpiero Cossarini

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Cited articles

Aksnes, D. L., Ohman, M. D., and Rivière, P.: Optical effect on the nitracline in a coastal upwelling area, Limnol. Oceanogr., 52, 1179–1187, https://doi.org/10.4319/lo.2007.52.3.1179, 2007. 
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Barbieux, M., Uitz, J., Gentili, B., Pasqueron de Fommervault, O., Mignot, A., Poteau, A., Schmechtig, C., Taillandier, V., Leymarie, E., Penkerc'h, C., D'Ortenzio, F., Claustre, H., and Bricaud, A.: Bio-optical characterization of subsurface chlorophyll maxima in the Mediterranean Sea from a Biogeochemical-Argo float database, Biogeosciences, 16, 1321–1342, https://doi.org/10.5194/bg-16-1321-2019, 2019. 
Beckmann, A. and Hense, I.: Beneath the surface: Characteristics of oceanic ecosystems under weak mixing conditions – A theoretical investigation, Prog. Oceanogr., 75, 771–796, https://doi.org/10.1016/j.pocean.2007.09.002, 2007. 
Bethoux, J. P., Gentili, B., Morin, P., Nicolas, E., Pierre, C., and Ruiz-Pino, D.: The Mediterranean Sea: a miniature ocean for climatic and environmental studies and a key for the climatic functioning of the North Atlantic, Prog. Oceanogr., 44, 131–146, https://doi.org/10.1016/S0079-6611(99)00023-3, 1999. 
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During summer, maxima of phytoplankton chlorophyll concentration (DCM) occur in the subsurface of the Mediterranean Sea and can play a relevant role in carbon sequestration into the ocean interior. A numerical model based on in situ and satellite observations provides insights into the range of DCM conditions across the relatively small Mediterranean Sea and shows a western DCM that is 25 % shallower and with a higher phytoplankton chlorophyll concentration than in the eastern Mediterranean.
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