title: The Southern Ocean biological response to aeolian iron deposition.
abstract: Biogeochemical rate processes in the Southern Ocean have an important impact on the global environment. Here, we summarize an extensive set of published and new data that establishes the pattern of gross primary production and net community production over large areas of the Southern Ocean. We compare these rates with model estimates of dissolved iron that is added to surface waters by aerosols. This comparison shows that net community production, which is comparable to export production, is proportional to modeled input of soluble iron in aerosols. Our results strengthen the evidence that the addition of aerosol iron fertilizes export production in the Southern Ocean. The data also show that aerosol iron input particularly enhances gross primary production over the large area of the Southern Ocean downwind of dry continental areas.
authors: Department of Geosciences, Princeton University, Princeton, NJ 08544, USA. ncassar@princeton.edu
authors: Nicolas
authors: N
authors: Cassar
authors: Michael L
authors: ML
authors: Bender
authors: Bruce A
authors: BA
authors: Barnett
authors: Songmiao
authors: S
authors: Fan
authors: Walter J
authors: WJ
authors: Moxim
authors: Hiram
authors: H
authors: Levy
authors: Bronte
authors: B
authors: Tilbrook
mesh_terms: D001272:Atmosphere; D017753:Ecosystem; D007501:Iron / Q000032:analysis*; D009792:Oceans and Seas; D010100:Oxygen / Q000032:analysis; D010839:Phytoplankton / Q000254:growth & development*; D012621:Seasons; D012623:Seawater / Q000737:chemistry; D014919:Wind
chemical_list: D007501:Iron; D010100:Oxygen