Articles | Volume 1, issue 1
Earth Syst. Sci. Data, 1, 25–34, 2009

Special issue: CARINA: a consistent carbon-relevant data base for the Arctic,...

Earth Syst. Sci. Data, 1, 25–34, 2009

  19 Nov 2009

19 Nov 2009

Overview of the Nordic Seas CARINA data and salinity measurements

A. Olsen1,2, R. M. Key3, E. Jeansson1, E. Falck4, J. Olafsson5, S. van Heuven6, I. Skjelvan1,4, A. M. Omar1,4, K. A. Olsson1,2, L. G. Anderson2, S. Jutterström2, F. Rey7, T. Johannessen1,4, R. G. J. Bellerby1,4, J. Blindheim7, J. L. Bullister8, B. Pfeil1, X. Lin3, A. Kozyr9, C. Schirnick10, T. Tanhua10, and D. W. R. Wallace10 A. Olsen et al.
  • 1Bjerknes Centre for Climate Research, UNIFOB AS, Allegaten 55, 5007 Bergen, Norway
  • 2Department of Chemistry, University of Gothenburg, 41296 Göteborg, Sweden
  • 3Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ 08544, USA
  • 4Geophysical Institute, University of Bergen, Bergen, Norway
  • 5Faculty of Earth Sciences, University of Iceland and Marine Research Institute, Reykjavik, Iceland
  • 6Departement of Ocean Ecosystems, University of Groningen, Groningen, The Netherlands
  • 7Institute of Marine Research, Bergen, Norway
  • 8Pacific Marine Environmental Laboratory/NOAA, 7600 Sand Point Way NE, Seattle, WA 98115-6349, USA
  • 9Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  • 10Leibniz-Institut für Meereswissenshaften, Marine Biogeochemie, Kiel, Germany

Abstract. 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 include the Arctic Ocean and the Nordic Seas, and the quality control was carried out separately in these two areas. This contribution provides an overview of the CARINA data from the Nordic Seas and summarises the findings of the QC of the salinity data. One cruise had salinity data that were of questionable quality, and these have been removed from the data product. An evaluation of the consistency of the quality controlled salinity data suggests that they are consistent to at least ±0.005.