Retracking CryoSat-2, Envisat and Jason-1 radar altimetry waveforms for improved gravity field recovery

1 . The arrival time estimated from the fit of the analytical model to the nadir-pointing SAMOSA data agreed to better than 1 mm in absolute range. The σ parameter from the least-squares model fit shows a good linear relationship with the SWH for the SAMOSA data with a misfit at smaller SWH due to the detailed shape of the point target response function not being fully characterized by our Gaussian analytic formulation. This comparison confirms that our model is a good description of the single-look, nadir-pointing case.

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