Correcting SeaWinds measurements for rain effects

Correcting SeaWinds scatterometer data for rain using radiometer rain rates is possible at moderate rates when the antenna footprint is fully-filled with rain. We address use of the "slice" sub-footprints to correct for partially filled footprints. Using the number of slices containing heavy rain, we propose adjusting the rate reported by the radiometer to a value near that if the heavy rain filled the footprint and applying this value to empirical formulas to calculate backscatter from and attenuation through the rain. Simulations show the errors are not very sensitive to the estimate of raining area.