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Effect of air-sea temperature difference on ocean microwave brightness temperature estimated from AMSR, SeaWinds, and buoys

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Abstract

The effect of air-sea temperature differences on the ocean microwave brightness temperature (Tb) was investigated using the Advanced Microwave Scanning Radiometer (AMSR) aboard the Advanced Earth Observing Satellite-II (ADEOS-II) during a period of seven months. AMSR Tb in the global ocean was combined with wind data supplied by the scatterometer SeaWinds aboard ADEOS-II and air temperature given by a weather forecast model. Tb was negatively correlated with air-sea temperature difference, its ratio lying around −0.4K/°C at the SeaWinds wind speed of 14 m/s for the 6 GHz vertical polarization. Tb of AMSR-E aboard AQUA during 3.5 years was combined with ocean buoy data, and similar results were obtained.

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  1. Earth Observation Research Center, Japan Aerospace Exploration Agency, Sengen, Tsukuba, 305-8505, Japan

    Akira Shibata

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  1. Akira Shibata
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Correspondence to Akira Shibata.

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Shibata, A. Effect of air-sea temperature difference on ocean microwave brightness temperature estimated from AMSR, SeaWinds, and buoys. J Oceanogr 63, 863–872 (2007). https://doi.org/10.1007/s10872-007-0073-y

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  • DOI: https://doi.org/10.1007/s10872-007-0073-y

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