FN Archimer Export Format
PT J
TI Role of the circulation on the anthropogenic CO2 inventory in the North-East Atlantic: A climatological analysis
BT 
AF CARRACEDO, Lidia
   PEREZ, FF
   GILCOTO, M.
   VELO, A.
   PADIN, A.
   ROSON, G.
AS 1:1,2;2:2;3:2;4:2;5:2;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Vigo Spain, Fac Marine Sci, Phys Oceanog Grp GOFUVI, Campus Lagoas Marcosende, Vigo 36200, Spain.
   CSIC, Inst Invest Marinas, Oceanol Grp, Eduardo Cabello 6, Vigo 36208, Spain.
C2 UNIV VIGO, SPAIN
   CSIC, SPAIN
IF 3.245
TC 2
UR https://archimer.ifremer.fr/doc/00629/74109/107782.pdf
LA English
DT Article
DE ;Anthropogenic CO2;Carbon storage;Air-sea CO2 uptake;Water masses;Overturning;Gulf of Cadiz;North-East Atlantic
AB Climatology-based storage rate of anthropogenic CO2 (C-ant, referred to year 2000) in the North-East Atlantic (53 +/- 9 kmol s(-1), 0.020 +/- 0.003 Pg-C yr(-1)) is described on annual mean terms. C-ant advection (32 +/- 14 kmol s(-1)) occurs mostly in the upper 1800 m and contributes to 60% of the C-ant storage rate. The Azores and Portugal Currents act as 'C-ant streams' importing 389 +/- 90 kmol s(-1), most of which recirculates southwards with the Canary Current (-214 +/- 34 kmol s(-1)). The Azores Counter Current (-79 +/- 36 kmol s(-1)) and the northward-flowing Mediterranean Water advective branch (-31 +/- 12 kmol s(-1)) comprise secondary C-ant export routes. By means of C-ant transport decomposition, we find horizontal circulation to represent 11% of the C-ant storage rate, while overturning circulation is the main driver (48% of the C-ant storage rate). Within the domain of this study, overturning circulation is a key mechanism by which C-ant in the upper layer (0-500 dbar) is drawdown (74 +/- 14 kmol s(-1)) to intermediate levels (500-2000 dbar), and entrained (37 +/- 7 kmol s(-1)) into the Mediterranean Outflow Water to form Mediterranean Water. This newly formed water mass partly exports C-ant to the North Atlantic at a rate of -39 +/- 9 kmol s(-1) and partly contributes to the C-ant storage in the North-East Atlantic (with up to 0.015 +/- 0.006 Pg-C yr(-1)). Closing the C-ant budget, 40% of the C-ant storage in the North-East Atlantic is attributable to anthropogenic CO2 uptake from the atmosphere (21 +/- 10 kmol s(-1)). 
PY 2018
PD FEB
SO Progress In Oceanography
SN 0079-6611
PU Pergamon-elsevier Science Ltd
VL 161
UT 000427992300005
BP 78
EP 86
DI 10.1016/j.pocean.2018.01.009
ID 74109
ER

EF