14C profiles in the Norwegian and Greenland Seas by conventional and AMS measurements

Abstract

At higher latitudes, the ocean acts as a sink for CO2. In addition to Δ14C measurements, the authors are concerned here with dissolved inorganic carbon (DIC) and δ13C in the Norwegian and Greenland Seas. During cruises in 1989 and 1990, several Δ14C profiles were obtained and a few GEOSECS profiles taken in 1972 were repeated. From changes in the profiles, it appears that the deep water in the Greenland Sea has obtained about 25% of the 14C concentration in the ocean surface over a period of 25 years. The Norwegian Sea deepwater is estimated to be 50-100 years older than that of the Greenland Sea. -from Authors