Earth System Science Data Discussions www.earth-syst-sci-data-discuss.net 1866-3591 3 1 2010 10.5194/essdd-3-55-2010 http://www.earth-syst-sci-data-discuss.net/3/55/2010/ http://www.earth-syst-sci-data-discuss.net/3/55/2010/essdd-3-55-2010.html http://www.earth-syst-sci-data-discuss.net/3/55/2010/essdd-3-55-2010.pdf 55 78 2010-03-03 Nordic Seas nutrients data in CARINA J. Olafsson jon@hafro.is A. Olsen Marine Research Institute, Skulagata 4, IS 121 Reykjavik, Iceland Institute of Earth Sciences, University of Iceland, Sturlugata 7, IS 101 Reykjavik, Iceland Bjerknes Centre for Climate Research, UNI Research, Allégaten 55, 5007 Bergen, Norway Department of Chemistry, University of Gothenburg, 41296 Göteborg, Sweden Water column data of carbon and carbon relevant hydrographic and hydrochemical parameters from 188 previously non-publicly available cruises in the Arctic, Atlantic, and Southern Ocean have been retrieved and merged into a new database: CARINA (CARbon IN the Atlantic). The data have been subject to rigorous quality control (QC) in order to ensure highest possible quality and consistency. The data for most of the parameters included were examined in order to quantify systematic biases in the reported values, i.e. secondary quality control. Significant biases have been corrected for in the data products, i.e.~the three merged files with measured, calculated and interpolated values for each of the three CARINA regions; the Arctic Mediterranean Seas (AMS), the Atlantic (ATL) and the Southern Ocean (SO). With the adjustments, the CARINA database is consistent both internally as well as with GLODAP (Key et al., 2004) and is suitable for accurate assessments of, for example, oceanic carbon inventories and uptake rates, and for model validation. The Arctic Mediterranean Seas is the collective term for the Arctic Ocean and the Nordic Seas, and the quality control was carried out separately in these two areas. 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