Orbital format ice data records at the full data rate which contain the time, precise location, altimeter height measurement, corrected precise surface elevation, atmospheric corrections, tidal values, retracking corrections, and AGC. This data is updated on-line as more precise orbits, corrections, and tide values become available.
height measurements derived from altimetry data, ordered by geographic
areas or "bins". Each data record contains the geodetic position,
revolution number, surface elevation relative to a reference ellipsoid,
and slope correction.
Gridded elevations are calculated from the data by a weighted fitting
of a bi-quadratic function (bi-linear where data distribution is poor) on
a polar stereographic projection with a nominal spacing of 5 km (ERS-1)
10 km (GEOSAT) and 20 km (Seasat).
Gives interpolated elevations for different tracks at the same location
including the corrections also interpolated to the crossover location.