FN Archimer Export Format
PT J
TI Monitoring the surface inflow of Atlantic Water to the Norwegian Sea using Envisat ASAR
BT 
AF HANSEN, M. W.
   JOHANNESSEN, J. A.
   DAGESTAD, K. F.
   COLLARD, Fabrice
   CHAPRON, Bertrand
AS 1:1;2:1,2;3:1;4:3;5:4;
FF 1:;2:;3:;4:;5:PDG-ODE-LOS;
C1 Nansen Environm & Remote Sensing Ctr, N-5006 Bergen, Norway.
   Univ Bergen, Inst Geophys, Bergen, Norway.
   Collecte Localisat Satellites, F-29280 Plouzane, France.
   IFREMER, Lab Oceanog Spatiale, F-29280 Plouzane, France.
C2 NERSC, NORWAY
   UNIV BERGEN, NORWAY
   CLS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LOS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
IF 3.021
TC 20
UR https://archimer.ifremer.fr/doc/00056/16771/14216.pdf
LA English
DT Article
AB Sea surface range Doppler velocities from nearly 1200 Envisat Advanced Synthetic Aperture Radar (ASAR) acquisitions between 2007 and 2011, covering the Norwegian Sea, the North Sea, and the Skagerrak Sea, have been examined. After systematic corrections, the inflow of Atlantic Water to the Norwegian Sea, via the two branches of the Norwegian Atlantic Current, is investigated. Distinct expressions of the eastern branch, the Norwegian Atlantic Slope Current, are revealed with a speed of 20-40 cm/s and a clear manifestation of topographic steering along the 500 m isobath. The western branch, the Norwegian Atlantic Front Current, is also depicted but with lower surface velocities. Moreover, parts of the Norwegian Coastal Current are also detected with time-averaged speed reaching up to 40 cm/s. At a spatial resolution of 10 km, the root mean square errors of these velocities are estimated to be less than 5 cm/s. The range Doppler velocity retrievals are assessed and compared to other direct and indirect estimates of the upper ocean current, including surface Lagrangian drifters, moored recording current meter measurements, and surface geostrophic current inverted from several mean dynamic topography fields. The results are promising and demonstrate that the synthetic aperture radar based range Doppler velocity retrieval method is applicable to monitoring the temporal and spatial variations of ocean surface circulation, provided the imaging geometry is favorable.
PY 2011
PD DEC
SO Journal Of Geophysical Research-oceans
SN 0148-0227
PU Amer Geophysical Union
VL 116
IS C12008
UT 000298031100004
DI 10.1029/2011JC007375
ID 16771
ER

EF