Weak response of oceanic dimethylsulfide to upper mixing shoaling induced by global warming.

ABSTRACT: The solar radiation dose in the oceanic upper mixed layer (SRD) has recently been identified as the main climatic force driving global dimethylsulfide (DMS) dynamics and seasonality. Because DMS is suggested to exert a cooling effect on the earth radiative budget through its involvement in the formation and optical properties of tropospheric clouds over the ocean, a positive relationship between DMS and the SRD supports the occurrence of a negative feedback between the oceanic biosphere and climate, as postulated 20 years ago. Such a natural feedback might partly counteract anthropogenic global warming through a shoaling of the mixed layer depth (MLD) and a consequent increase of the SRD and DMS concentrations and emission. By applying two globally derived DMS diagnostic models to global f

SUBMITTER: Vallina SM 

PROVIDER: S-EPMC2042152 | biostudies-literature | 2007 Oct

REPOSITORIES: biostudies-literature