Temporal variability of the anthropogenic CO2 storage in the Irminger Sea

Type Article
Date 2008-12
Language English
Author(s) Perez F. F.1, Vazquez-Rodriguez M.1, Louarn E.2, 3, Padin X. A.1, Mercier HerleORCID4, Rios A. F.1
Affiliation(s) 1 : CSIC, Inst Invest Marinas, Vigo 36208, Spain.
2 : Inst Univ Europeen Mer, Lab Chim Marine, Plouzane, France.
3 : UPMC, CNRS, Biol Stn, F-29682 Roscoff, France.
4 : Inst Francais Rech Exploitat Mer, Ctr Brest, CNRS, Lab Phys Oceans,IRD,UBO, F-29280 Plouzane, France.
Source Biogeosciences (1726-4170) (Copernicus publications), 2008-12 , Vol. 5 , N. 6 , P. 1669-1679
WOS© Times Cited 39
Abstract The anthropogenic CO2 (C-ant) estimates from cruises spanning more than two decades (1981-2006) in the Irminger Sea area of the North Atlantic Subpolar Gyre reveal a large variability in the C-ant storage rates. During the early 1990's, the C-ant storage rates (2.3 +/- 0.6 mol C m(-2) yr(-1)) doubled the average rate for 1981-2006 (1.1 +/- 0.1 mol C m(-2) yr(-1)), whilst a remarkable drop to almost half that average followed from 1997 onwards. The C-ant storage evolution runs parallel to chlorofluorocarbon-12 inventories and is in good agreement with C-ant uptake rates of increase calculated from sea surface pCO(2) measurements. The contribution of the Labrador Seawater to the total inventory of C-ant in the Irminger basin dropped from 66% in the early 1990s to 49% in the early 2000s. The North Atlantic Oscillation shift from a positive to a negative phase in 1996 led to a reduction of air-sea heat loss in the Labrador Sea. The consequent convection weakening accompanied by an increase in stratification has lowered the efficiency of the northern North Atlantic CO2 sink.
Full Text
File Pages Size Access
publication-5925.pdf 10 1 MB Open access
Top of the page

How to cite 

Perez F. F., Vazquez-Rodriguez M., Louarn E., Padin X. A., Mercier Herle, Rios A. F. (2008). Temporal variability of the anthropogenic CO2 storage in the Irminger Sea. Biogeosciences, 5(6), 1669-1679. Open Access version : https://archimer.ifremer.fr/doc/00000/5925/