FN Archimer Export Format
PT J
TI Dissolved organic nitrogen production and export by meridional overturning in the eastern subpolar North Atlantic
BT 
AF Fernández-Castro, Bieito
   Álvarez, Marta
   Nieto-Cid, Mar
   ZUNINO, Patricia
   Mercier, Herle
   Álvarez-Salgado, Xosé Antón
AS 1:1,2;2:3;3:3;4:5;5:4;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Departamento de Oceanografía; Instituto de Investigacións Mariñas (IIM-CSIC); Vigo 36208 ,Spain
   Physics of Aquatic Systems Laboratory, Margaretha Kamprad Chair, Ecole Polytechnique Fédérale de Lausanne, Institute of Environmental Engineering; Lausanne ,Switzerland
   Centro Oceanográfico de A Coruña; Instituto Español de Oceanografía; A Coruña 15001, Spain
   Laboratoire d'Océanographie Physique et Spatiale, UMR 6523 CNRS/Ifremer/IRD/UBO, Ifremer Centre de Bretagne; Plouzané 29280 ,France
C2 IIM CSIC, SPAIN
   ECOLE POLYTECH FED LAUSANNE, SWITZERLAND
   IEO, SPAIN
   CNRS, FRANCE
   ALTRAN OUEST, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   copubli-europe
   copubli-int-hors-europe
IF 4.497
TC 4
UR https://archimer.ifremer.fr/doc/00485/59622/62649.pdf
   https://archimer.ifremer.fr/doc/00485/59622/62650.pdf
LA English
DT Article
CR OVIDE
   OVIDE 1
BO Thalassa
DE ;dissolved organic matter;nitrogen cycle;meridional overturning circulation;subpolar North Atlantic;metabolic balance
AB Dissolved organic matter (DOM) is produced in the surface and exported towards the deep ocean, adding ∼2 PgC yr−1 to the global carbon export. Due to its central role in the Meridional Overturning Circulation (MOC), the eastern subpolar North Atlantic (eSPNA) contributes largely to this export. Here we quantify the transport and budget of dissolved organic nitrogen (DON) in the eSPNA, in a box delimited by the OVIDE 2002 section and the Greenland‐Iceland‐Scotland sills. The MOC exports >15.9 TgN yr−1 of DON downwards and, contrary to the extended view that these are materials of subtropical origin, up to 33% of the vertical flux derives from a net local DON production of 7.1 ± 2.6 TgN yr−1. The low C:N molar ratio of DOM production (7.4 ± 4.1) and the relatively short‐transit times in the eSPNA (3 ± 1 yr) suggest that local biogeochemical transformations result in the injection of fresh bioavailable DOM to the deep ocean. 
PY 2019
PD APR
SO Geophysical Research Letters
SN 0094-8276
PU American Geophysical Union (AGU)
VL 46
IS 7
UT 000465836200028
BP 3832
EP 3842
DI 10.1029/2018GL080284
ID 59622
ER

EF