Title :
Impact of ASAR ENVISAT directional wave spectra on wave forecast
Author :
Aouf, L. ; Lefevre, J.-M. ; Hauser, D. ; Chapron, B.
Author_Institution :
Div. of Marine & Oceanogr., Meteo France, Toulouse, France
Abstract :
In order to improve the wave forecast, the assimilation of directional wave spectra in wave model has been developed at Meteo France. The assimilation scheme is tested for real ENVISAT ASAR wave spectra provided by the European Space Agency. The scheme takes into account the limitation in frequency related to the ASAR instrument. The preliminary results show that the assimilation of wave spectra is efficient and works correctly. The impact of the assimilation on wave parameters is significant and stays effective in the forecast period. In addition, statistical analysis has shown good skill in term of root mean square and assimilation index for the analyzed wave parameters (wave height, direction and frequency).
Keywords :
ocean waves; oceanographic techniques; radar altimetry; radar imaging; spaceborne radar; statistical analysis; ASAR ENVISAT directional wave spectra; European Space Agency; Meteo France; assimilation index; frequency cut-off; statistical analysis; wave forecast; wave height; wave model; wave parameters; Covariance matrix; Frequency; Instruments; Interpolation; Meteorology; Predictive models; Statistical analysis; Testing; Weather forecasting; Wind energy generation;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294721
