FN Archimer Export Format
PT J
TI Interannual variability of the Subpolar Mode Water properties over the Reykjanes Ridge during 1990-2006
BT 
AF THIERRY, Virginie
   DE BOISSESON, Eric
   MERCIER, Herle
AS 1:1;2:1;3:1;
FF 1:PDG-DOP-DCB-OPS-LPO;2:;3:;
C1 IFREMER, Ctr Brest, CNRS, UMR 6523,IRD,UBO,Lab Phys Oceans, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 3.147
TC 53
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Université de Bretagne Occidentale
UR https://archimer.ifremer.fr/doc/2007/publication-3487.pdf
LA English
DT Article
CR OVIDE 1
   OVIDE 2
   OVIDE 3
BO Thalassa
   Maria S. Merian
DE ;North Atlantic Oscillation;subpolar mode water;North Atlantic Ocean
AB Combining hydrographic data from the OVIDE (Observatoire de la Variabilité Interannuelle à Decennale/Observatory of the Interannual to Decadal Variability) section (Greenland-Portugal) with Argo and historical CTD data over the period 1990–2006, we estimate the variability of the core properties of a variety of Subpolar Mode Water (SPMW) observed on the eastern flank of the Reykjanes Ridge. This SPMW acquires its core properties in the winter mixed layer along the eastern side of the Reykjanes Ridge. We find that the February sea surface temperature along the ridge is a proxy for its core temperature. The sources of this mode water are water masses advected by the mean cyclonic circulation in the Iceland Basin. A density compensated tendency for cooling and freshening of the SPMW core properties is observed in the early 1990s. It stops in 1996 and is followed by an increase in temperature and salinity (+1.41°C and +0.11 psu) and a decrease in density (−0.12 kg m−3) until at least 2003. During the entire period, the data do not show any significant modification in the depth of the mode water core while they suggest that the thickness of the layer shrank. The variability of the local air-sea freshwater and heat fluxes cannot explain the observed salinity and temperature variations. They are most likely related to the modifications of the properties of the SPMW sources due to the recently evidenced changes, driven by the North Atlantic Oscillation, in the relative contributions of subtropical waters and subpolar waters in the Iceland Basin.
PY 2008
PD APR
SO Journal of Geophysical Research ( JGR ) - Oceans
SN 0148-0227
PU American Geophysical Union
VL 113
IS C04016
UT 000255077300006
DI 10.1029/2007JC004443
ID 3487
ER

EF