@article{fdi:010066726,
  title = {{E}ffects of light and phosphorus on summer {DMS} dynamics in subtropical waters using a global ocean biogeochemical model},
  author = {{M}asotti, {I}. and {B}elviso, {S}. and {B}opp, {L}. and {T}agliabue, {A}. and {B}ucciarelli, {E}va},
  editor = {},
  language = {{ENG}},
  abstract = {{E}nvironmental context {M}odels are needed to predict the importance of the changes in marine emissions of dimethylsulfide ({DMS}) in response to ocean warming, increased stratification and acidification, and to evaluate the potential effects on the {E}arth's climate. {W}e use complementary simulations to further our understanding of the marine cycle of {DMS} in subtropical waters, and show that a lack of phosphorus may exert a more important control on surface {DMS} concentrations than an excess of light. {A}bstract {T}he occurrence of a summer {DMS} paradox in the vast subtropical gyres is a strong matter of debate because approaches using discrete measurements, climatological data and model simulations yielded contradictory results. {T}he major conclusion of the first appraisal of prognostic ocean {DMS} models was that such models need to give more weight to the direct effect of environmental forcings (e.g. irradiance) on {DMS} dynamics to decouple them from ecological processes. {H}ere, the relative role of light and phosphorus on summer {DMS} dynamics in subtropical waters is assessed using the ocean general circulation and biogeochemistry model {NEMO}-{PISCES} in which macronutrient concentrations were restored to monthly climatological data values to improve the representation of phosphate concentrations. {R}esults show that the vertical and temporal decoupling between chlorophyll and {DMS} concentrations observed in the {S}argasso {S}ea during the summer months is captured by the model. {A}dditional sensitivity tests show that the simulated control of phosphorus on surface {DMS} concentrations in the {S}argasso {S}ea is much more important than that of light. {B}y extending the analysis to the whole {N}orth {A}tlantic {O}cean, we show that the longitudinal distribution of {DMS} during summer is asymmetrical and that a correlation between the solar radiation dose and {DMS} concentrations only occurs in the {S}argasso {S}ea. {T}he lack of a widespread summer {DMS} paradox in our model simulation as well as in the comparison of discrete and climatological data could be due to the limited occurrence of phosphorus limitation in the global ocean.},
  keywords = {global modelling ; {S}argasso {S}ea ; solar radiation dose ; {ATLANTIQUE} ; {SARGASSES} {MER}},
  booktitle = {},
  journal = {{E}nvironmental {C}hemistry},
  volume = {13},
  numero = {2},
  pages = {379--389},
  ISSN = {1448-2517},
  year = {2016},
  DOI = {10.1071/en14265},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066726},
}