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| Tournadre, Jean; Chapron, Bertrand; Reul, Nicolas; Vandemark, D. |
| [1] About 5% of Ku-band altimeter ocean data are degraded by the occurrence of high radar return cross sections (sigma(0)), usually called sigma(0) blooms. During blooms, which occur during no or low wind conditions, the mean altimeter waveform can significantly depart from the expected shape. In about 60% of the cases the waveforms are distorted to such an extent that either the range tracker loses lock or the off-nadir angle estimate becomes unrealistic. The analysis of high data rate altimeter waveforms during bloom events reveals the presence of V-shaped patterns similar to the ones observed during rain events. These patterns trace small-scale (i.e., smaller than the altimeter footprint) changes in surface backscatter. Such variations of surface... |
| Tipo: Text |
Palavras-chave: Slick; Sigma blooms; Altimeter waveforms. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1353.pdf |
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