FN Archimer Export Format
PT J
TI Ocean surface current retrieval from space: The Sentinel-2 multispectral capabilities
BT 
AF Yurovskaya, Maria
   Kudryavtsev, Vladimir
   Chapron, Bertrand
   Collard, Fabrice
AS 1:1,2;2:1,2;3:2,3;4:4;
FF 1:;2:;3:PDG-ODE-LOPS-SIAM;4:;
C1 Marine Hydrophysical Institute of RAS, Sevastopol, Russia
   Satellite Oceanography Laboratory, Russian State Hydrometeorological University, Saint Petersburg, Russia
   Institut Français de Recherche pour l’Exploitation de la Mer, Plouzané, France
   OceanDataLab, Déolen, France
C2 RUSSIAN ACAD SCI, RUSSIA
   UNIV RUSSIAN STATE HYDROMETEOROL, RUSSIA
   IFREMER, FRANCE
   OCEANDATALAB, FRANCE
SI BREST
SE PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer UMR
   copubli-france
   copubli-int-hors-europe
IF 9.085
TC 14
UR https://archimer.ifremer.fr/doc/00587/69865/67918.pdf
LA English
DT Article
DE ;Ocean currents;Sea surface optical images;Wave dispersion relation;Time lag;Wave breaking;Sentinel-2;Satellite methods
AB The Sentinel-2 MultiSpectral Instrument (MSI) collects multiple spectral band images, corresponding to specific sensing wavelengths and spatial resolutions, i.e. 10 m, 20 m and 60 m, respectively. Images are collected one at the time with a given time-lag between observations. Under favorable conditions, spatio-temporal characteristics of propagating ocean surface waves can thus uniquely be retrieved. A method for surface current vector field reconstruction is then developed. Demonstrated over different deep ocean regions, the retrieved surface current fields well compare with medium-resolution ocean circulation model or derived-velocities from altimeter measurements. At finer scales, the surface wave-conservation law is recovered, with the associated relationship between current vorticity and wave-ray curvature. Over shallow water regions, the wave propagation properties well follow sea depth variations, consistent with ETOPO1 data. Finally, time-lag between detector bands can also be exploited to estimate speed and direction properties of detected surface wave breaking whitecaps. An analysis of velocity reconstruction errors further reveals that Sentinel-2 MSI inter-channel co-registration is realized with an accuracy better than 0.1 pixel. Overall, these results confirm very promising capabilities of optical imagery to provide direct surface current velocity measurements from space, over relatively large areas, O(100 km), with a spatial resolution down to O(1 km). 
PY 2019
PD DEC
SO Remote Sensing Of Environment
SN 0034-4257
PU Elsevier BV
VL 234
UT 000500048100006
DI 10.1016/j.rse.2019.111468
ID 69865
ER

EF