Modeling ocean wave surface to simulate spaceborne scatterometer observations in presence of rain

Spaceborne scatterometer observations, especially at Ku-band, are affected by rain in several ways and these effects need to be corrected to avoid errors in wind retrievals. In this work we propose a model to derive the surface backscattering coefficient in presence of both wind and rain. Our approa...

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Bibliographic Details
Main Authors: Polverari, F., Marzano, F. S., Pulvirenti, L., Pierdicca, N., Hristova-Veleva, S. M., Turk, F. J.
Format: Conference Proceeding
Language:English
Subjects:
Modeling
ocean surface
Rain
Rough surfaces
scatterometry
Sea surface
Spaceborne radar
spectrum
Surface roughness
Surface waves
wind
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Summary:Spaceborne scatterometer observations, especially at Ku-band, are affected by rain in several ways and these effects need to be corrected to avoid errors in wind retrievals. In this work we propose a model to derive the surface backscattering coefficient in presence of both wind and rain. Our approach consists in the development of an ocean surface wind wave spectrum accounting for two effects due to raindrops impact on the surface: the rain-induced wave damping and the generation of ring waves. The results show that this extended spectrum is able to model the ocean surface wave modifications due to rain so that it can be used for further study in physically representing the scatterometer observations in presence of both wind and rain.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2015.7325988