FN Archimer Export Format
PT J
TI New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean
BT 
AF Aouf, L
   Hauser, D
   CHAPRON, Bertrand
   Toffoli, A
   Tourrain, C
   PEUREUX, Charles
AS 1:1;2:2;3:3;4:4;5:5;6:6;
FF 1:;2:;3:PDG-ODE-LOPS-SIAM;4:;5:;6:;
C1 Météo-France, CNRM-DirOP, Toulouse, France
   LATMOS/IPSL, Guyancourt, France
   IFREMER, Brest, France
   The University of Melbourne, Melbourne, Australia
   CNES, Toulouse, France
   CLS, Brest, France
C2 CNRM (METEO FRANCE), FRANCE
   IPSL, FRANCE
   IFREMER, FRANCE
   UNIV MELBOURNE, AUSTRALIA
   CNES, FRANCE
   CLS, FRANCE
SI BREST
SE PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer UMR
   copubli-france
   copubli-int-hors-europe
IF 5.576
TC 27
UR https://archimer.ifremer.fr/doc/00668/77996/80217.pdf
   https://archimer.ifremer.fr/doc/00668/77996/83370.pdf
LA English
DT Article
DE ;assimilation;directional;Southern Ocean;SWH;wave age;wave number
AB In spite of continuous improvements of ocean wave models in the last decades, large errors still remain in particular under strongly forced conditions, often encountered in the Southern Ocean, where strong westerly winds generate some of the fiercest waves on Earth in almost unlimited fetch conditions. The newly launched China‐France Oceanography SATellite (CFOSAT) provides directional spectra of ocean waves for both wind seas and swells. Compared to Synthetic Aperture Radar (SAR), it can resolve shorter wavelengths in all directions, which dominate in non‐fully developed wind waves. Here, the assimilation of these CFOSAT wave number components is proved to bring more accurate predictions of wave growth compared to the assimilation of significant wave height alone. A notable reduction of model bias is found in the Southern Ocean, especially in the Pacific Ocean sector. Results further exhibit a downward shift of the wave age, consistent with theoretical wave growth curves. Plain Language Summary This work focuses on the importance of using directional wave observations to improve model wave prediction in the Southern Ocean. The results indicate a significant impact on the transition from a wind‐dependent sea to a well‐developed sea. A direct consequence of this work will concern a better understanding of the wave climate in the Southern Ocean and therefore an improvement of coupled ocean/waves/atmosphere systems. 
PY 2021
PD MAR
SO Geophysical Research Letters
SN 0094-8276
PU American Geophysical Union
VL 48
IS 5
UT 000627892100051
DI 10.1029/2020GL091187
ID 77996
ER

EF