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Comment on "seasonal variation in wind speed and sea state from global satellite measurements"

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  • In a recent paper, Sandwell and Agreen [1984; hereafter SA] presented figures of global seasonal wind speed and sea state as measured by the GEOS 3 satellite altimeter. Since that time, Chelton and McCabe [1985; hereafter CM] have found that problems exist in the algorithms used to retrieve wind speed from altimeter measurements of radar backscatter. These problems were discovered too late to be of use in the analysis of SA. However, because they have a significant impact on the accuracy of wind speed estimation from altimeters, it is important that they he pointed out now so that the results of SA are not misused. Although the results presented here do not alter many of the conclusions of SA in a qualitative sense, they do become important for any quantitative interpretation of the seasonal winds presented by SA. In addition, the data distribution maps presented here (Figures 3a-3i) are useful for pointing out limitations in other applications of GEOS 3 data (e.g., use of the altimeter sea level measurements to study surface geostrophic currents).
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  • Chelton, D. (1985), Comment on “Seasonal Variation in Wind Speed and Sea State From Global Satellite Measurements” by D. Sandwell and R. Agreen, J. Geophys. Res., 90(C3), 5001-5008.
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  • 90
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  • C3
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