FN Archimer Export Format
PT J
TI Gyre scale deep convection in the subpolar North-Atlantic Ocean during winter 2014-2015
BT 
AF PIRON, Anne
   THIERRY, Virginie
   MERCIER, Herle
   CANIAUX, G.
AS 1:1;2:1;3:2;4:3;
FF 1:;2:PDG-ODE-LOPS-OH;3:;4:;
C1 Ifremer, Lab Oceanog Phys & Spatiale, UMR CNRS IFREMER IRD UBO 6523, Plouzane, France.
   CNRS, Lab Oceanographie Phys & Spatiale, UMR CNRS IFREMER IRD UBO 6523, Plouzane, France.
   Ctr Natl Rech Meteorol, UMR Meteofrance CNRS 3589, Toulouse, France.
C2 IFREMER, FRANCE
   CNRS, FRANCE
   CNRM (METEO FRANCE), FRANCE
SI BREST
SE PDG-ODE-LOPS-OH
UM LOPS
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 4.339
TC 51
UR https://archimer.ifremer.fr/doc/00370/48072/48175.pdf
   https://archimer.ifremer.fr/doc/00370/48072/48176.pdf
LA English
DT Article
CR OVIDE
AB Using Argo floats, we show that a major deep convective activity occurred simultaneously in the Labrador Sea (LAB), South of Cap Farewell (SCF) and the Irminger Sea (IRM) during winter 2014–2015. Convection was driven by exceptional heat loss to the atmosphere (up to 50% higher than the climatological mean). This is the first observation of deep convection over such a widespread area. Mixed layer depths exceptionally reached 1700 m in SCF and 1400 m in IRM. The deep thermocline density gradient limited the mixed layer deepening in the Labrador Sea to 1800 m. Potential densities of deep waters were similar in the three basins (27.73-27.74 kg m−3), but warmer by 0.3 °C and saltier by 0.04 in IRM than in LAB and SCF, meaning that each basin formed locally its own deep water. The cold anomaly that developed recently in the North-Atlantic Ocean favored and was enhanced by this exceptional convection.
PY 2017
PD FEB
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 44
IS 3
UT 000396115000030
BP 1439
EP 1447
DI 10.1002/2016GL071895
ID 48072
ER

EF