Altimeter sea state bias: A new look at global range error estimates

Details Altimeter sea state bias: A new look at global range error estimates Altimeter sea state bias: A new look at global range error estimates

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3947c&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 20, p. 3947-3950

Physics

7

Electromagnetics: Random Media And Rough Surfaces, Electromagnetics: Scattering And Diffraction, Oceanography: General: Remote Sensing And Electromagnetic Processes, Oceanography: Physical: Air/Sea Interactions

Scientific paper

A nonparametric SSB model, derived using the TOPEX altimeter, is analyzed to show a new decomposition of the form SSB=bHs+f(σo), where b is 0.03 and the function of radar cross section (σo) is an absolute second-order range correction residing outside the conventional nondimensional SSB model. Expected variability in the dominant bHs term and its ties to the long wave orbital velocity and shorter-scale slope variances are discussed using a physically-motivated restatement of recent EM bias theory. The geometry of steep near-breaking waves, neglected within current theory, is invoked as one plausible explanation for the observed Hs-independent SSB component.

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