Polar Ice Sheet DEMs and Elevation Data

OSU91A

The Ohio State University geoid model 91A (OSU-91A). It is used by NASA/GSFC and has a spatial resolution of .25 degree globally.

Reference:

Rapp, R.H., Y.M. Wang, N.K. Pavlis. 1991. The Ohio State 1991 geopotential and sea surface topography harmonic coefficient models. Report 410, Department of Geodetic Science and Surveying, Ohio State University.