FN Archimer Export Format PT J TI Nitrogen and Phosphorus Budgets in the Northwestern Mediterranean Deep Convection Region BT AF KESSOURI, Faycal ULSES, Caroline ESTOURNEL, Claude MARSALEIX, Patrick SEVERIN, Tatiana PUJO-PAY, Mireille CAPARROS, Jocelyne RAIMBAULT, Patrick DE FOMMERVAULT, Orens Pasqueron D'ORTENZIO, Fabrizio TAILLANDIER, Vincent TESTOR, Pierre CONAN, Pascal AS 1:1,2,3;2:1;3:1;4:1;5:4;6:5;7:5;8:6;9:7,8;10:7,8;11:7,8;12:9;13:5; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:; C1 Univ Toulouse, CNRS, UPS, Lab Aerol, Toulouse, France. Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA. Southern Calif Coastal Water Res Project, Dept Biogeochem, Costa Mesa, CA USA. Univ Texas Austin, Marine Sci Inst, Port Aransas, TX USA. Lab Oceanog Microbienne, Banyuls Sur Mer, France. Inst Mediterraneen Oceanol, Mareille, France. UPMC Univ Paris 06, Sorbonne Univ, Villefranche Sur Mer, France. CNRS UMR 7093, LOV, Observ Oceanol, Villefranche Sur Mer, France. CNRS LOCEAN, Paris, France. C2 UNIV TOULOUSE, FRANCE UNIV CALIF LOS ANGELES, USA SCCWRP, USA UNIV TEXAS AUSTIN, USA CNRS, FRANCE UNIV AIX MARSEILLE, FRANCE UNIV PARIS 06, FRANCE UNIV PARIS 06, FRANCE CNRS, FRANCE IF 2.711 TC 14 UR https://archimer.ifremer.fr/doc/00409/52089/52796.pdf https://archimer.ifremer.fr/doc/00409/52089/52797.pdf https://archimer.ifremer.fr/doc/00409/52089/52801.xlsx LA English DT Article CR DEWEX-MERMEX 2013 LEG1 DEWEX-MERMEX 2013 LEG2 MOOSE-GE 2013 BO Le Suroît Téthys II DE ;Mediterranean Sea;physical-biogeochemical modeling;nutrient seasonal dynamics;nitrate and phosphate budget;N:P stoichiometry AB The aim of this study is to understand the biogeochemical cycles of the northwestern Mediterranean Sea (NW Med), where a recurrent spring bloom related to dense water formation occurs. We used a coupled physical-biogeochemical model at high resolution to simulate realistic one-year period and analyze the nitrogen (N) and phosphorus (P) cycles. First, the model was evaluated using cruises carried out in winter, spring and summer and a Bio-Argo float deployed in spring. Then, the annual cycle of meteorological and hydrodynamical forcing and nutrients stocks in the upper layer were analyzed. Third, the effect of biogeochemical and physical processes on N and P was quantified. Fourth, we quantified the effects of the physical and biological processes on the seasonal changes of the molar NO3:PO4 ratio, particularly high compared to the global ocean. The deep convection reduced the NO3:PO4 ratio of upper waters, but consumption by phytoplankton increased it. Finally, N and P budgets were estimated. At the annual scale, this area constituted a sink of inorganic and a source of organic N and P for the peripheral area. NO3 and PO4 were horizontally advected from the peripheral regions into the intermediate waters (130-800 m) of the deep convection area, while organic matter was exported throughout the whole water column toward the surrounding areas. The annual budget suggests that the NW Med deep convection constitutes a major source of nutrients for the photic zone of the Mediterranean Sea. PY 2017 PD DEC SO Journal Of Geophysical Research-oceans SN 2169-9275 PU Amer Geophysical Union VL 122 IS 12 UT 000422732100008 BP 9429 EP 9454 DI 10.1002/2016JC012665 ID 52089 ER EF