FN Archimer Export Format
PT J
TI Mass, nutrient and oxygen budgets for the northeastern Atlantic Ocean
BT 
AF MAZE, Guillaume
   MERCIER, Herle
   THIERRY, Virginie
   MEMERY, Laurent
   MORIN, P.
   PEREZ, F.F.
AS 1:;2:;3:;4:;5:;6:;
FF 1:PDG-ODE-LPO;2:;3:PDG-ODE-LPO;4:;5:;6:;
C1 IFREMER, Lab Phys Oceans, UMR6523,CNRS,IRD, Plouzane, France.
   CNRS, Lab Sci Environm Marin, UMR6539,IRD, Plouzane, France.
   UBO, CNRS, Chim Marine UMR7144, AD2M, F-29682 Roscoff, France.
   Universite Pierre et Marie Curie Paris VI, Place Georges Teissier, 29682 Roscoff, France
   CSIC, Inst Invest Marinas, Vigo, Spain.
C2 IFREMER, FRANCE
   CNRS, FRANCE
   UBO, FRANCE
   UNIV PARIS 06, FRANCE
   CSIC, SPAIN
SI BREST
SE PDG-ODE-LPO
   UBOLEMAR
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.75
TC 12
UR https://archimer.ifremer.fr/doc/00100/21101/18724.pdf
LA English
DT Article
CR OVIDE 1
   OVIDE 2
   OVIDE 3
BO Thalassa
   Maria S. Merian
AB The northeast Atlantic is a key horizontal and vertical crossroads region for the meridional overturning circulation, but basic nutrient and oxygen fluxes are still poorly constrained by observations in the region. A surface to bottom northeast Atlantic Ocean budget for mass, nutrients (nitrate and phosphate) and oxygen is determined using an optimization method based on three surveys of the OVIDE transect (from Greenland to Portugal) completed with the World Ocean Atlas 2009. Budgets are derived for two communicating boxes representing the northeastern European basin (NEEB) and the Irminger Sea.   For the NEEB (Irminger) box, it is found that 30% of the mass import (export) across the OVIDE section reach (originate from) the Nordic Seas, while 70% are redistributed between both boxes through the Reykjanes Ridge (9.3 ± 0.7 × 109 kg s−1).   Net biological source/sink terms of nitrate point to both the Irminger and NEEB boxes as net organic matter production sites (consuming nitrate at a rate of –7.8 ± 6.5 kmol s−1 and –8.4 ± 6.6 kmol s−1, respectively). Using a standard Redfield ratio of C : N = 106 : 16, nitrate consumption rates indicate that about 40 TgC yr−1 of carbon is fixed by organic matter production between the OVIDE transect and the Greenland–Scotland Ridge. Nutrient fluxes also induce a net biological production of oxygen of 73 ± 60 kmol s−1 and 79 ± 62 kmol s−1 in the Irminger and NEEB boxes, which points to the region as being autotrophic.   The abiotic air–sea oxygen flux leads to an oceanic oxygen uptake in the two regions (264 ± 66 kmol s−1 in the north and 443 ± 70 kmol s−1 in the south). The abiotic flux is partitioned into a mixing and a thermal component. It is found that the Irminger Sea oceanic oxygen uptake is driven by an air–sea heat flux cooling increasing the ocean surface oxygen solubility. Over the northeastern European basin the mixing component is about half the thermal flux, presumably because of the oxygen minimum in the subtropical thermocline.
PY 2012
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 9
IS 10
UT 000310471800028
BP 4099
EP 4113
DI 10.5194/bg-9-4099-2012
ID 21101
ER

EF