  The theory of similarity for wind-driven seas is applied to the physical
analysis of the problem of sea state bias (SSB) in altimetry measurements.
Dimensionless wave steepness and pseudo-age derived from altimetry measurements
are expected to provide {physically relevant and accurate enough} SSB
estimates. Analysis of Jason-1,2,3 and SARAL/AltiKa data within the approach
shows the similarity and robustness of SSB distributions re-casted onto space
of wave pseudo-age and steepness. This result is considered as a ground for
developing a new parametric model of SSB and for analysis of underlying
physical effects.
