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Pre-IceBridge ATM L2 Icessn Elevation, Slope, and Roughness

The documentation for this data set is currently under construction and will be available in the near future. If you have any questions regarding this data set, please contact NSIDC User Services Office either by filling out a contact form, by e-mail to, or by telephone at +1 303-492-6199.

The NASA Pre-IceBridge ATM Level-2 Icessn Elevation, Slope, and Roughness (BLATM2) data set contains resampled and smoothed elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic and Arctic region land ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation. The data are stored in ASCII text format and are available for periodic campaigns from 23 June 1993 through 30 October 2008.

For more information on this data set, please refer to the ReadMe.icessn.txt file.

See the NASA About the ATM page for more on the Airborne Topographic Mapper.

Data are available via FTP.