Figure 1: Ku band skewness estimates for the TOPEX altimeter separated by north/south and ascending/descending passes and binned by the parameter
,which is an indicator of significant slope [Srokosz and Longuet-Higgins, 1986]. Theoretical bounds for a wave height with power law p=4 (long-dashed curve) and p=3.5 (short-dashed curve) are also shown. There is some consistency between theory and observation for higher values of , but due to distortions in the TOPEX leading edge, significant deviations are observed. Jason-1 waveforms will help in the resolution of the skewness behavior and its relation to theory and the EM bias.