Nicholson S. A. auteur aut IRD Levy Marina auteur aut IRD Jouanno Julien auteur aut IRD Capet Xavier auteur aut IRD Swart S. auteur aut IRD Monteiro P. M. S. auteur aut IRD text journalArticle eng text/pdf born digital access Dissolved iron (DFe) plays an immeasurable role in shaping the biogeochemical processes of the open-ocean Southern Ocean. However, due to observational constraints iron supply pathways remain poorly understood. Using an idealized eddy-resolving physical-biogeochemical model representing a turbulent sector of the Southern Ocean with seasonal buoyancy forcing and zonal winds overlaid by storms, we quantify the importance of a range of subsurface and surface iron supply mechanisms. The main physical supply pathways to the surface layer are via eddy advection and winter convective mixing in equal proportions. The associated subsurface loss of DFe is restocked via net remineralization (75%) and eddy advection (25%). Summer storms resulted in weak DFe supplies relative to the seasonal supplies (<7.6%). However, in situations of deep summer mixed layers and when interacting with underlying ocean fronts, summer storms resulted in enhanced diffusive and advective DFe supplies and raised summer primary production by 20% for several days. specialized storms seasonal iron supply winter entrainment eddy advection fronts Southern Ocean 032 46 24 14567-14575 2019 0094-8276 https://www.documentation.ird.fr/hor/fdi:010077431 10.1029/2019gl084657 0094-8276 [F B010077431] https://www.documentation.ird.fr/hor/fdi:010077431 https://www.documentation.ird.fr/intranet/publi/2020/01/010077431.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-02-05 2025-02-24 fdi:010077431 fre