Anthropogenic carbon distributions in the Atlantic Ocean: data-based estimates from the Arctic to the Antarctic M. Vázquez-Rodríguez1, F. Touratier2, C. Lo Monaco3, D. W. Waugh4, X. A. Padin1, R. G. J. Bellerby5,6, C. Goyet2, N. Metzl3, A. F. Ríos1, and F. F. Pérez1 1Instituto de Investigaciones Marinas, CSIC, Eduardo Cabello 6, 36208 Vigo, Spain 2IMAGES, Université de Perpignan, 52 avenue Paul Alduy, 66860 Perpignan, France 3LOCEAN/IPSL, Université Pierre et Marie Curie, case 100, 75252 Paris cedex 05, France 4Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, USA 5Bjerknes Centre for Climate Research, University of Bergen, Allégaten 55, 5007 Bergen, Norway 6Geophysical Institute, University of Bergen, Allégaten 70, 5007 Bergen, Norway
Abstract. Five of the most recent observational methods to estimate anthropogenic
CO2 (Cant) are applied to a high-quality dataset from five
representative sections of the Atlantic Ocean extending from the Arctic to
the Antarctic. Between latitudes 60° N–40° S all methods give similar
spatial distributions and magnitude of Cant. However, discrepancies are
found in some regions, in particular in the Southern Ocean and Nordic Seas.
The differences in the Southern Ocean have a significant impact on the
anthropogenic carbon inventories. The calculated total inventories of
Cant for the Atlantic referred to 1994 vary from 48 to 67 Pg (1015 g) of carbon,
with an average of 54±8 Pg C, which is higher than
previous estimates. These results, both the detailed Cant distributions
and extrapolated inventories, will help to evaluate biogeochemical ocean
models and coupled climate-carbon models.
Citation: Vázquez-Rodríguez, M., Touratier, F., Lo Monaco, C., Waugh, D. W., Padin, X. A., Bellerby, R. G. J., Goyet, C., Metzl, N., Ríos, A. F., and Pérez, F. F.: Anthropogenic carbon distributions in the Atlantic Ocean: data-based estimates from the Arctic to the Antarctic, Biogeosciences, 6, 439-451, doi:10.5194/bg-6-439-2009, 2009.