FN Archimer Export Format
PT J
TI Intense deformation field at oceanic front inferred from directional sea surface roughness observations
BT 
AF RASCLE, Nicolas
   MOLEMAKER, Jeroen
   MARIE, Louis
   NOUGUIER, Frederic
   CHAPRON, Bertrand
   LUND, Bjorn
   MOUCHE, Alexis
AS 1:3;2:1;3:1;4:1,2;5:1;6:2;7:1;
FF 1:;2:;3:PDG-ODE-LOPS-OC;4:PDG-ODE-LOPS-SIAM;5:PDG-ODE-LOPS-SIAM;6:;7:PDG-ODE-LOPS-SIAM;
C1 Univ Brest, CNRS, IRD, LOPS,IUEM,Ifremer, Brest, France.
   Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Ocean Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA.
C2 IFREMER, FRANCE
   UNIV MIAMI, USA
   CNRS, FRANCE
SI BREST
SE PDG-ODE-LOPS-OC
   PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-int-hors-europe
IF 4.339
TC 38
UR https://archimer.ifremer.fr/doc/00386/49767/50301.pdf
LA English
DT Article
DE ;sea surface roughness;surface current;remote sensing;Sun glitter;high resolution;oceanic fronts
AB Fine scale current gradients at the ocean surface can be observed by sea surface roughness. More specifically, directional surface roughness anomalies are related to the different horizontal current gradient components. This paper reports results from a dedicated experiment during the LASER (LAgrangian Submesoscale ExpeRiment) drifter deployment. A very sharp front, 50 m wide, is detected simultaneously in drifter trajectories, sea surface temperature and sea surface roughness. A new observational method is applied, using sun glitter reflections during multiple airplane passes to reconstruct the multi-angle roughness anomaly. This multi-angle anomaly is consistent with wave-current interactions over a front, including both cross-front convergence and along-front shear with cyclonic vorticity. Qualitatively, results agree with drifters and X-band radar observations. Quantitatively, the sharpness of roughness anomaly suggests intense current gradients, 0.3 m s−1 over the 50 m wide front. This work opens new perspectives for monitoring intense oceanic fronts using drones or satellite constellations. 
PY 2017
PD JUL
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 44
IS 11
UT 000404382600040
BP 5599
EP 5608
DI 10.1002/2017GL073473
ID 49767
ER

EF