@article{fdi:010062943, title = {{I}mpact of climate change on the {N}orthwestern {M}editerranean {S}ea pelagic planktonic ecosystem and associated carbon cycle}, author = {{H}errmann, {M}arine and {E}stourmel, {C}. and {A}dloff, {F}. and {D}iaz, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {N}orthwestern {M}editerranean {S}ea ({NWMS}) is one of the most productive areas of the {M}editerranean {S}ea. {T}he {NWMS} pelagic planktonic ecosystem is strongly influenced by hydrodynamics, in particular winter deep convection. {H}ere, we investigate the response of this ecosystem and associated carbon cycle to oceanic and atmospheric winter conditions interannual variability. {F}or that we developed a tridimensional coupled physical-biogeochemical model, ran annual simulations forced by {XX}th climate conditions and performed statistical and budget analysis.{O}ur coupled model reproduces correctly the seasonal evolution of the {NWMS} pelagic planktonic ecosystem. {I}t however overestimates the contribution of nanophytoplankton to the total phytoplanktonic biomass and {GPP}, underestimates the bacteria biomass and represents the spring bloom with 1 month delay. {O}ur results confirm that the control of phytoplanktonic development and bacteria growth by the phosphorus availability is a marked specificity of the {NWMS}, that is, temporally reduced by deep convection. {T}hey confirm the relevance of the {B}ehrenfeld (2010) hypothesis in explaining the bloom dynamics. {T}he variability of the winter atmospheric conditions induces differences of vertical mixing and water temperature that propagate into the whole {NWMS} ecosystem through a chain of relationships. {T}he high frequency filtering associated with averaging diagnostics explains that this variability seems weak at the {NWMS} scale. {H}owever for most of the variables and processes, differences induced by the winter atmospheric variability are significant at the annual scale. {N}et metabolism and deep carbon export are systematically positive and show larger variabilities related, respectively, to the water temperature and convection intensity.}, keywords = {{INTERACTION} {OCEAN} {ATMOSPHERE} ; {CLIMAT} ; {PLANCTON} ; {ESPECE} {PELAGIQUE} ; {FONCTIONNEMENT} {DE} {L}'{ECOSYSTEME} ; {CYCLE} {BIOGEOCHIMIQUE} ; {CARBONE} ; {CIRCULATION} {ATMOSPHERIQUE} ; {CIRCULATION} {OCEANIQUE} ; {MODELISATION} ; {VARIATION} {SAISONNIERE} ; {VARIATION} {INTERANNUELLE} ; {CHANGEMENT} {CLIMATIQUE} ; {MEDITERRANEE}}, booktitle = {}, journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans}, volume = {119}, numero = {9}, pages = {5815--5836}, ISSN = {2169-9275}, year = {2014}, DOI = {10.1002/2014{JC}010016}, URL = {https://www.documentation.ird.fr/hor/fdi:010062943}, }