| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Combined wind vector and sea state impact on ocean nadir-viewing Ku- and C-band radar cross-sections
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| Autores: |
Tran, Ngan
Chapron, Bertrand
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| Data: |
2006-03
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| Ano: |
2006
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| Palavras-chave: |
Altimeter
Radar cross section
Polarization
Wind direction
Sea state
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| Resumo: |
The authors report the first results in studying the polarization anisotropy of the microwave backscatter from nadir observations provided by Jason-1 altimeter in both Ku- and C-band. A small but clear wind direction signal for wind speeds above 6 m/s is revealed. These azimuthal variations of radar cross-section increase with increasing wind speed up to 14 m/s. The signatures then level off at higher winds. These results extend, for the first time, recent theoretical improved scattering approximation, and point some similarities between scattering and emission mechanisms at nadir. The observed directional effect can thus be interpreted as a signature of the curvature anisotropy of wind-generated short-scale waves. Sensitivities to both wind speed and sea state are also reported in the present analysis.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00004/11557/8150.pdf
DOI:10.3390/s6030193
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| Editor: |
Molecular Diversity Preservation International
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| Relação: |
http://archimer.ifremer.fr/doc/00004/11557/
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| Formato: |
application/pdf
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| Fonte: |
Sensors (1424-8220) (Molecular Diversity Preservation International), 2006-03 , Vol. 6 , N. 3 , P. 193-207
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| Direitos: |
2010 MDPI
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