FN Archimer Export Format
PT J
TI North Atlantic Western Boundary Currents Are Intense Dissolved Organic Carbon Streams
BT 
AF Fontela, Marcos
   Pérez, Fiz F
   Mercier, Herle
   Lherminier, Pascale
AS 1:1,2;2:2;3:3;4:4;
FF 1:;2:;3:;4:PDG-ODE-LOPS-OH;
C1 Instituto de Investigaciones Marinas (IIM-CSIC), Vigo, Spain
   Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
   Laboratoire d’Océanographie Physique et Spatiale, UMR 6523 CNRS-IFREMER-IRD-University of Brest, Plouzané, France
   Laboratoire d’Océanographie Physique et Spatiale, UMR 6523 CNRS-IFREMER-IRD-University of Brest, Plouzané, France
C2 IIM CSIC, SPAIN
   CCMAR, PORTUGAL
   IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-ODE-LOPS-OH
UM LOPS
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
IF 5.247
TC 2
UR https://archimer.ifremer.fr/doc/00661/77268/78702.pdf
   https://archimer.ifremer.fr/doc/00661/77268/78703.pdf
LA English
DT Article
CR OVIDE
   OVIDE 1
BO Thalassa
DE ;dissolved organic carbon;North Atlantic;carbon budget;carbon dioxide;biogeochemistry;Atlantic Meridional Overturning Circulation
AB In the North Atlantic, there are two main western boundary currents related to the Atlantic Meridional Overturning Circulation (AMOC): the Gulf Stream flowing northward and the Deep Western Boundary Current (DWBC) flowing southward. Here we analyze data from the OVIDE section (GO-SHIP A25 Portugal-Greenland 40–60°N) that crosses the DWBC and the northward extension of the Gulf Stream, the North Atlantic Current. We show that North Atlantic western boundary currents play a key role in the transport of dissolved organic matter, specifically dissolved organic carbon (DOC). Revisited transports and budgets of DOC with new available data identify the eastern Subpolar North Atlantic (eSPNA) as an important source of locally produced organic matter for the North Atlantic and a key region in the supply of bioavailable DOC to the deep ocean. The East Greenland Current, and its upstream source the East Reykjanes Ridge Current on the eastern flank of the mid-Atlantic ridge, are export pathways of bioavailable DOC toward subtropical latitudes. The fast overturning and subsequent remineralization of DOC produced in the autotrophic eSPNA explains up to 38% of the total oxygen consumption in the deep North Atlantic between the OVIDE section and 24°N. Carbon budgets that do not take into account this organic remineralization process overestimates the natural uptake of carbon dioxide (CO2) from the atmosphere by one third. The inclusion of DOC transports in regional carbon budgets reconciles the estimates of CO2 uptake in the North Atlantic between model and observations. 
PY 2020
PD NOV
SO Frontiers In Marine Science
SN 2296-7745
PU Frontiers Media SA
VL 7
UT 000597981500001
DI 10.3389/fmars.2020.593757
ID 77268
ER

EF