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Article Dans Une Revue Biogeochemistry Année : 2012

DMS dynamics in the most oligotrophic subtropical zones of the global ocean

Résumé

The influences of physico-chemical and biological processes on dimethylsulfide (DMS) dynamics in the most oligotrophic subtropical zones of the global ocean were investigated. As metrics for the dynamics of DMS and the so-called 'summer DMS paradox' of elevated summer concentrations when surface chlorophyll a (Chl) and particulate organic carbon (POC) levels are lowest, we used the DMS-toChl and DMS-to-POC ratios in the context of three independent and complementary approaches. Firstly, field observations of environmental variables (such as the solar radiation dose, phosphorus limitation of phytoplankton and bacterial growth) were used alongside discrete DMS, Chl and POC estimates extracted from global climatologies (i.e., a 'station based' approach). We then used monthly climatological data for DMS, Chl, and POC averaged over the biogeographic province wherein a given oligotrophic subtropical zone resides (i.e., a 'province based'

Domaines

Océanographie

Dates et versions

hal-00757679 , version 1 (27-11-2012)

Identifiants

Citer

Sauveur Belviso, I. Masotti, A. Tagliabue, Laurent Bopp, Patrick Brockmann, et al.. DMS dynamics in the most oligotrophic subtropical zones of the global ocean. Biogeochemistry, 2012, pp.27. ⟨10.1007/s10533-011-9648-1⟩. ⟨hal-00757679⟩
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