FN Archimer Export Format
PT J
TI Trends of anthropogenic CO2 storage in North Atlantic water masses
BT 
AF PEREZ, F. F
   VAZQUEZ-RODRIGUEZ, M.
   MERCIER, Herle
   VELO, A.
   LHERMINIER, Pascale
   RIOS, A. F.
AS 1:1;2:1;3:2;4:1;5:2;6:1;
FF 1:;2:;3:;4:;5:PDG-DOP-DCB-OPS-LPO;6:;
C1 CSIC, Inst Invest Marinas, Vigo 36208, Spain.
   IFREMER, Ctr Brest, CNRS Ifremer IRD UBO, Lab Phys Oceans, F-29280 Plouzane, France.
   CNRS, Ifremer IRD UBO, Lab Phys Oceans, F-29280 Plouzane, France
C2 CSIC, SPAIN
   IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-DPCP
   PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-europe
IF 3.587
TC 39
UR https://archimer.ifremer.fr/doc/00006/11706/8362.pdf
LA English
DT Article
CR OVIDE 1
   OVIDE 2
   OVIDE 3
BO Thalassa
   Maria S. Merian
AB A high-quality inorganic carbon system database, spanning over three decades (1981-2006) and comprising of 13 cruises, has allowed the applying of the phi C degrees(T) method and coming up with estimates of the anthropogenic CO2 (C-ant) stored in the main water masses of the North Atlantic. In the studied region, strong convective processes convey surface properties, like C-ant, into deeper ocean layers and grants this region an added oceanographic interest from the point of view of air-sea CO2 exchanges. Generally, a tendency for decreasing C-ant storage rates towards the deep layers has been observed. In the Iberian Basin, the North Atlantic Deep Water has low C-ant concentrations and negligible storage rates, while the North Atlantic Central Water in the upper layers shows the largest C-ant values and the largest annual increase of its average concentration (1.13 +/- 0.14 mu mol kg(-1) yr(-1)). This unmatched rate of change in the C-ant concentration of the warm upper limb of the Meridional Overturning Circulation decreases towards the Irminger basin (0.68 +/- 0.06 mu mol kg(-1) yr(-1)) due to the lowering of the buffering capacity. The mid and deep waters in the Irminger Sea show rather similar C-ant concentration rates of increase (between 0.33 and 0.45 mu mol kg(-1) yr(-1)), whereas in the Iceland basin these layers seem to have been less affected by C-ant. Overall, the C-ant storage rates in the North Atlantic subpolar gyre during the first half of the 1990s, when a high North Atlantic Oscillation (NAO) phase was dominant, are similar to 48% higher than during the 1997-2006 low NAO phase that followed. This result suggests that a net decrease in the strength of the North Atlantic sink of atmospheric CO2 has taken place during the present decade. The changes in deep-water ventilation are the main driving processes causing this weakening of the North Atlantic CO2 sink.
PY 2010
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 7
IS 5
UT 000278184500026
BP 1789
EP 1807
DI 10.5194/bg-7-1789-2010
ID 11706
ER

EF