Dissolved iron measured on water bottle samples during POLARSTERN cruise ANT-XXIV/3 ...

• Main Authors: Klunder, Maarten B, Laan, Patrick, Middag, Rob, de Baar, Hein J W, van Ooijen, Jan C
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; Iron, dissolved; Iron, dissolved, standard deviation; CTD/Rosette, ultra clean; ANT-XXIV/3; Polarstern; Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES; International Polar Year 2007-2008 IPY; Antarc*; Antarctic; International Polar Year; IPY; North Atlantic Deep Water; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.780271; https://doi.pangaea.de/10.1594/PANGAEA.780271

We report a comprehensive dataset of dissolved iron (Fe) comprising 482 values at 22 complete vertical profiles along a 1° latitudinal section at the Zero meridian. In addition a shorter high resolution (~00°09') surface section of the southernmost part of the transect (66°00' - 69°35' S) is presented. Within the upper surface mixed layer the concentrations of dissolved Fe vary between 0.1 and 0.3 nM. An inverse trend versus fluorescence suggests significant Fe removal by plankton blooms. Vertical mixing and upwelling are the most important supply mechanisms of iron from deep waters to the upper surface mixed layer. At lower latitude (42°S) there is a distinct maximum of 0.6-0.7 nM in the 2000-3000 m depth range due to inflow of North Atlantic Deep Water. In one region (55°S) elevated dissolved Fe found in the surface mixed layer is ascribed to the recent deposition of aeolian dust originating from South America. Close to the Antarctic continent there is an indication of Fe supply in surface waters from ... : Data included in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...