FN Archimer Export Format
PT J
TI Wind-Forced Submesoscale Symmetric Instability around Deep Convection in the Northwestern Mediterranean Sea
BT 
AF Bosse, anthony
   Testor, Pierre
   Damien, Pierre
   Estournel, Claude
   Marsaleix, Patrick
   Mortier, Laurent
   Prieur, Louis
   Taillandier, Vincent
AS 1:1;2:2;3:3;4:4;5:4;6:2,5;7:6;8:6;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Mediterranean Institute of Oceanography, Aix Marseille University, Université de Toulon, CNRS, IRD, MIO UM 110, F-13288 Marseille, France
   Laboratoire d’Océanographie et du Climat: Expérimentations et Approches Numériques, Sorbonne Universités, UPMC Université Paris 06, IPSL, CNRS, IRD, MNHN, LOCEAN UMR 182, F-75252 Paris, France
   Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA 90025, USA
   Laboratoire d’Études en Géophysique et Océanographie Spatiales, CNRS, CNES, IRD, Université de Toulouse, LEGOS UMR 5566, F-31400 Toulouse, France
   ENSTA-Paristech, F-91120 Palaiseau, France
   Laboratoire d’Océanographie de Villefranche, Sorbonne Universités, CNRS, IMEV-LOV UMR 7093, F-06230 Villefranche-sur-Mer, France
C2 UNIV AIX MARSEILLE, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV CALIF LOS ANGELES, USA
   LEGOS, FRANCE
   ENSTA-PARISTECH, FRANCE
   UNIV SORBONNE, FRANCE
IN DOAJ
TC 8
UR https://archimer.ifremer.fr/doc/00747/85931/91190.pdf
   https://archimer.ifremer.fr/doc/00747/85931/91191.zip
LA English
DT Article
CR DEWEX-MERMEX 2013 LEG1
   DEWEX-MERMEX 2013 LEG2
   MOOSE (DYFAMED) 2012 - TE
   MOOSE (DYFAMED) 2013
   MOOSE-GE 2012
   MOOSE-GE 2013
BO Le Suroît
   Téthys II
DE ;deep convection;submesoscale dynamics;frontal instability;subduction
AB During the winter from 2009 to 2013, the mixed layer reached the seafloor at about 2500 m in the northwestern Mediterranean Sea. Intense fronts around the deep convection area were repeatedly sampled by autonomous gliders. Subduction down to 200–300 m, sometimes deeper, below the mixed layer was regularly observed testifying of important frontal vertical movements. Potential Vorticity dynamics was diagnosed using glider observations and a high resolution realistic model at 1-km resolution. During down-front wind events in winter, remarkable layers of negative PV were observed in the upper 100 m on the dense side of fronts surrounding the deep convection area and successfully reproduced by the numerical model. Under such conditions, symmetric instability can grow and overturn water along isopycnals within typically 1–5 km cross-frontal slanted cells. Two important hotpspots for the destruction of PV along the topographically-steered Northern Current undergoing frequent down-front winds have been identified in the western part of Gulf of Lion and Ligurian Sea. Fronts were there symmetrically unstable for up to 30 days per winter in the model, whereas localized instability events were found in the open sea, mostly influenced by mesoscale variability. The associated vertical circulations also had an important signature on oxygen and fluorescence, highlighting their under important role for the ventilation of intermediate layers, phytoplankton growth and carbon export. 
PY 2021
PD MAR
SO Fluids
SN 2311-5521
PU MDPI AG
VL 6
IS 3
UT 000633670600001
DI 10.3390/fluids6030123
ID 85931
ER

EF