FN Archimer Export Format
PT J
TI The Atlantic Meridional Overturning Circulation and the subpolar gyre observed at the A25-OVIDE section in June 2002 and 2004
BT 
AF LHERMINIER, Pascale
   MERCIER, Herle
   HUCK, Thierry
   GOURCUFF, Claire
   PEREZ, Fiz F.
   MORIN, Pascal
   SARAFANOV, Artem
   FALINA, Anastasia
AS 1:5;2:1;3:1;4:1;5:2;6:3;7:4;8:4;
FF 1:PDG-DOP-DCB-OPS-LPO;2:;3:;4:;5:;6:;7:;8:;
C1 UBO, IFREMER, CNRS, IRD,Lab Phys Oceans,UMR6523, Plouzane, France.
   Inst Invest Marinas CSIC, Vigo, Spain.
   UPMC, CNRS, Stn Biol Roscoff, Adaptat & Divers Milieu Marin UMR7144, Roscoff, France.
   PP Shirshov Oceanol Inst, Moscow, Russia.
C2 CNRS, FRANCE
   INST INVEST MARINAS CSIC, SPAIN
   UNIV PARIS 06, FRANCE
   PP SHIRSHOV OCEANOL INST, RUSSIA
   IFREMER, FRANCE
SI BREST
   UBO
SE PDG-DOP-DCB-OPS-LPO
   PDG-DPCP
   PDG-DRO-UMLPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 2.372
TC 63
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Université Pierre et Marie Curie
   Université de Bretagne Occidentale
UR https://archimer.ifremer.fr/doc/00011/12272/9057.pdf
LA English
DT Article
CR OVIDE 1
   OVIDE 2
BO Thalassa
DE ;North Atlantic;Subpolar gyre;Meridional Overturning Circulation;OVIDE;Hydrology;ADCP
AB The horizontal circulation of the subpolar gyre and the Meridional Overturning Circulation (MOC) are investigated here by comparing two snapshots of the North Atlantic as delivered by two hydrographic sections between Greenland and Portugal. The corresponding cruises were carried out in June–July 2002 and June–July 2004 on R/V Thalassa within the framework of the Ovide project. The absolute transports in June 2004 are described in detail, and then compared with transports in June 2002. The MOC (in density coordinates), driven by the volume balance between the northward North Atlantic Current (NAC) and the net southward export of dense water from the subpolar gyre, did not change: View the MathML source (1 Sv=106 m3 s−1). Its upper limb, above σ1=32.1, is decomposed into two main branches, the Eastern NAC (ENAC) and the Western NAC (WNAC), that transport about 8 Sv each. In the lower limb of the MOC, we find a 4–5 Sv increase in the cyclonic circulation of the subpolar gyre between June 2002 and 2004, affecting mainly the intermediate water without changing the MOCσ amplitude. Accordingly, the 14±2 Sv transport over Reykjanes Ridge in June 2004 (between 58ring operator50′N and Iceland) is estimated to have been 4–5 Sv stronger than in June 2002. Sustaining this observation, a relatively warm and salty anomaly coming from the Iceland Basin was found in the East Greenland-Irminger Current (EGIC) in June 2004, along with a modified vertical structure of the transport that shows a 4–5 Sv intensification of the net southward flow in the corresponding layer. Overall, in June 2004, the EGIC (from the surface to σ0=27.8) is found at 23.7±1.4 Sv in June 2004, and the Deep Western Boundary Current (DWBC) below sums up to 11.2±1.7 Sv, so that the western boundary current is View the MathML source stronger than in June 2002.
PY 2010
PD NOV
SO Deep-sea Research Part I-oceanographic Research Papers
SN 0967-0637
PU Pergamon-elsevier Science Ltd
VL 57
IS 11
UT 000284750700001
BP 1374
EP 1391
DI 10.1016/j.dsr.2010.07.009
ID 12272
ER

EF