@article{fdi:010073067,
  title = {{M}odeling the impacts of atmospheric deposition of nitrogen and desert dust-derived phosphorus on nutrients and biological budgets of the {M}editerranean {S}ea},
  author = {{R}ichon, {C}. and {D}utay, {J}. {C}. and {D}ulac, {F}. and {W}ang, {R}. and {B}alkanski, {Y}. and {N}abat, {P}. and {A}umont, {O}livier and {D}esboeufs, {K}. and {L}aurent, {B}. and {G}uieu, {C}. and {R}aimbault, {P}. and {B}euvier, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}tmospheric deposition represents a significant source of nutrients at the {M}editerranean basin scale. {W}e apply aerosol deposition fields simulated from atmospheric models into the high resolution oceanic bio-geochemical model {NEMOMED}12/{PISCES} with nutrient ratios used for plankton growth set to {R}edfield ratio. {W}e perform 3 simulations to determine the impact of nutrients on productivity over the period 1997-2012: (i) without atmospheric deposition, (ii) with nitrogen deposition from anthropogenic and natural sources, and (iii) with deposition of both nitrogen (from anthropogenic and natural sources) and phosphate from desert dust. {T}ime series of modeled deposition fluxes are compared to available measurements. {T}his comparison with measurements shows that both variability and intensity ranges are realistic enough for our main purpose of estimating the atmospheric deposition impact on {M}editerranean biogeochemical tracers such as surface nutrient concentrations, chlorophyll a and plankton concentrations. {O}ur results show that atmospheric deposition is one of the major sources of nitrogen and phosphorus for some regions of the oligotrophic {M}editerranean {S}ea. {M}ore than 18.10(9)g{N} month(-1) are deposited to the whole {M}editerranean {S}ea. {T}his deposition is responsible for an average increase of 30-50% in primary production over vast regions. {N}atural dust-derived deposition of phosphorus is sparser in space and time (0.5.10(9) g month(-1) on average over the entire basin). {H}owever, dust deposition events can significantly affect biological production. {W}e calculate fertilizing effects of phosphate from dust to be low on average (6-10%) but up to 30% increase in primary productivity can be observed during the months when surface water stratification occurs. {F}inally, these fertilizing effects are shown to be transmitted along the biological chain (primary production, {C}hl a, phytoplankton, zooplankton, grazing). {W}e also perform a preliminary study on the maximal biological response of the {M}editerranean by simulating extreme deposition events throughout the basin over a full year period. {W}e show that nitrogen deposition effects observed in our long-term simulations (1997-2012) are close to maximal effects (i.e. those produced by high intensity deposition events) whereas dust-derived phosphate effects are substantially weaker than the effect on productivity reached when an extreme deposition event occurs.},
  keywords = {{M}editerranean ; {B}iogeochemistry ; {A}erosol ; {N}utrient ; {D}eposition ; {MEDITERRANEE}},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {163},
  numero = {{S}pecial issue},
  pages = {21--39},
  ISSN = {0079-6611},
  year = {2018},
  DOI = {10.1016/j.pocean.2017.04.009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073067},
}