Since 1993,regular repeat sea surface water sampling for both hydrological and carbon parameters has been conducted in the North Atlantic subpolar gyre (NASG),3 to 4 times a year,between Iceland and the Newfoundland [Corbière et al.,2006].This analysis showed that DIC concentrations appeared relatively stable since 1993 and TA concentrations decreased since 2001 maybe related to coccolithophorid blooms.We found that the oceanic fCO2 (fCO2 oc ) evolution is mainly related to sea surface warming up to 2°C since 1993.Based on winter data,we estimate an increasing rate of fCO2 oc of +5 μatm.yr -1 (1993-2006).This suggests that the trend is faster in recent years compared to estimates between 1972-1989 based on winter fCO2 reconstruction [max +3.2 μatm.yr -1,Omar and Olsen,2006].The summer trend is in very good agreement with the value derived by Lefèvre et al [2004] for the same months (August and September) and suggests that the fCO2 oc growth rate in the NASG is lower in summer than in winter.