| Summary: | Symposium GLOBEC-IMBER España celebrado del 28-30 marzo de 2007 en Valencia.-- 1 page Over two decades, the hypothesis that oceanic plankton influence climate through the production and emission of the cloud precursor dimethylsulfide (DMS) has fostered intensive research on the cycle of biogenic sulfur in the ocean. Because of the cross-scale nature of the hypothesis, DMS research has to be conducted at multiple temporal and spatial scales and with a big load or multidisciplinariety (Simó 2001). In recent years, field and process-based studies have been complemented with modelling activities the use of new-generation satellite sensors for global observation. This is yielding important advances in the knowledge of the DMS cycle, its dynamics, its atmospheric effects and its responses to climate forces. Here we present very recent work conducted in our group on global observation and modelling of the bidirectional links between oceanic DMS, cloud-forming aerosols and solar radiation (Vallina and Simó 2007, Vallina et al. 2006, 2007). References: Simó, R., 2001. Production of atmospheric sulfur by oceanic plankton: biogeochemical, ecological and evolutionary links. Trends Ecol. Evol. 16, 287-294. Vallina, S.M., R. Simó, S. Gassó, 2006. What controls CCN seasonality in the Southern Ocean? A statistical analysis based on satellite-derived chlorophyll and CCN and model-estimated OH radical and rainfall. Global Biogeochem. Cycles 20, GB1014, doi:10.1029/2005GB002597 Vallina, S.M., R. Simó, 2007. Strong relationship between DMS and the solar radiation dose over the global surface ocean. Science 315, 506-508. Vallina, S., R. Simó, S. Gassó, C. de Boyer-Montégut, E. del Rio, E. Jurado, J. Dachs, 2007. Analysis of a potential solar radiation-DMS-CCN link from globally mapped seasonal correlations. Global Biogeochem. Cycles, in press
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