The role of an oblique swell on scatterometry: A laboratory study
- IMST, Marseille (France)
- UCL, Louvain-la-Neuve (Belgium)
- NASA/GSFC, Wallops Island, VA (United States)
Knowledge of sea-surface wind and wind-stress is of great importance for meteorology and oceanography. Wind speed and direction can be inferred from scatterometer returns. The scatterometer azimuthal response from the sea-surface is directly related to the spatial distribution of the short wind-waves. Sometimes in open field observations, capillary-gravity waves and long gravity waves are misaligned, i.e., in presence of oblique swell or in veering wind conditions near meteorological fronts. In such geophysical conditions, the spatial wave distribution may be not symmetric with respect to the local wind direction and the scatterometer azimuthal response would probably differ from the case where all the waves are traveling in the same direction. To get a better understanding of wind sea-surface measurements by scatterometry, the authors conducted experiments in the large IMIST wind-wave facility and investigated the azimuthal response of a Ku-band scatterometer from sea-states in which long-wave were at oblique angle to short wind-waves.
- OSTI ID:
- 467706
- Report Number(s):
- CONF-9409461--
- Country of Publication:
- United States
- Language:
- English
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