Corrections of altimetry data for nonisostatic sea level response to atmospheric pressure in the East (Japan) Sea

Abstract

Correction of various satellite altimetry data (from TOPEX, ERS, Jason-1, ENVISAT, and GFO) with a simple analytic model, accounting for the nonisostatic sea level response to atmospheric pressure in the East (Japan) Sea, reduces aliasing effects and trackiness errors better than the standard inverted barometric (IB) correction. The rms difference between the two corrections is 2-3 cm with maximum difference of up to 15 cm (mostly during winter). The model correction reduces more trackiness compared to the IB correction. The differences between the two corrections cannot be eliminated with merging multiple-satellite altimetry data in the East Sea even though they are slightly reduced through the merging process.0-7803-9050