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Global swell waves observation and application for NRT storm swell tracking and swell attenuation estimation

Fabrice Collard(1), Bertrand Chapron(2) and Fabrice Ardhuin(3)

(1) BOOST Technologies, 115, rue Claude CHAPPE, 29280 Plouzané, France
(2) IFREMER, Centre de Brest, 29280 Plouzané, France
(3) SHOM, 13 rue du Chatellier, 29200 Brest, France


Based on the latest version of ASAR wave mode L1b and L2 products reprocessed at IFREMER, and using an accumulation of those observations over a moving time window together with very simple linear propagation model, a global scale analysis of ocean swell is shown to be feasible on a routine basis. Validation of the proposed methodology against buoy data is presented. Application of this global analysis to track storm swells and identify all observed swell partitions relative to a given storm event is demonstrated. Subsequent estimation of swell attenuation along trajectories from identified storm center to distant shores is demonstrated together with possible use for improvement of the dissipation source term in numerical sea state models.


Workshop presentation

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry