Abstract
The impact of ERS-1 scatterometer wind data on numerical wave modelling is investigated with the second generation wave model of Me/spl acute/te/spl acute/o-France VAGATLA over the North Atlantic Ocean, in the framework of the SEMAPHORE experiment. The optimum interpolation of scatterometer data is first reconsidered and used to re-analyze the driving wind fields from the French weather model ARPEGE. The wave model is then run to produce new hindcasts with the re-analyzed fields. The impact of the scatterometer data is evaluated by comparing the hindcasts obtained with and without wind re-analysis with the available measurements. Clear improvements are found in the description of the significant wave heights and the representation of the energy spectrum. >
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