Biogeosciences www.biogeosciences.net 1726-4170 1726-4189 5 2 2008 10.5194/bg-5-535-2008 http://www.biogeosciences.net/5/535/2008/ http://www.biogeosciences.net/5/535/2008/bg-5-535-2008.html http://www.biogeosciences.net/5/535/2008/bg-5-535-2008.pdf 535 547 2008-04-10 Sea-surface CO2 fugacity in the subpolar North Atlantic A. Olsen are.olsen@gfi.uib.no K. R. Brown M. Chierici T. Johannessen C. Neill Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway Geophysical Institute, University of Bergen, Bergen, Norway Marine Chemistry, Department of Chemistry, Göteborg University, Göteborg, Sweden We present the first year-long subpolar trans-Atlantic set of surface seawater CO2 fugacity (fCO2sw) data. The data were obtained aboard the MV Nuka Arctica in 2005 and provide a quasi-continuous picture of the fCO2sw variability between Denmark and Greenland. 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