Concentrations of macronutrients, dissolved organic and inorganic compounds during the iron fertilization experiment EIFEX in 2004


Here we present the concentrations of inorganic nutrients, dissolved organic carbon, nitrogen and phophorus and dissolved inorganic carbon (DIC) from discrete water samples collected with a CTD-rosette during the European Iron Fertilization Experiment (EIFEX). The experiment was carried out from February 11 to March 20, 2004 in the 60-km diameter, rotating core of an eddy, formed by a meander of the Antarctic Polar Front (centred at around 49°10' S and 2°10' E). Samples were taken within the eddy inside and outside the fertilized patch, and in a few cases outside the eddy. Inorganic nutrients (silicate, phosphate, nitrate, nitrite and ammonium) were measured with a Technicon Autoanalyser II system using standard methods. Dissolved organic carbon (DOC) was determined by high temperature combustion using a TOC-VCPH/CPN (Shimadzu) according to Skoog et al. (1997). Dissolved organic nitrogen (DON) was measured on an Evolution continuous flow analyser (Alliance Instruments) after Valderrama (1981). Dissolved inorganic carbon was measured by coulometric titration (Johnson et al., 1987) using a SOMMA system with gas loop calibration with a reproducibility of 2 mmol/kg. DIC was calibrated against certified reference materials from Andrew Dickson at Scripps Institution of Oceanography (SIO).

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Metadata Access
Creator Klaas, Christine ORCID logo; Bellerby, Richard G J; Berg, Gry Mine; Neill, Craig; Terbrüggen, Anja; Webb, Adrian; Smetacek, Victor
Publisher PANGAEA
Publication Year 2023
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 9707 data points
Discipline Earth System Research
Spatial Coverage (1.840W, -49.955S, 2.600E, -49.001N); South Atlantic Ocean
Temporal Coverage Begin 2004-02-11T18:54:00Z
Temporal Coverage End 2004-03-20T05:49:00Z