Pre-IceBridge ATM L1B Qfit Elevation and Return Strength

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-1B Qfit Elevation and Return Strength (BLATM1B) data set contains spot elevation measurements of Arctic, Greenland, and Antarctic sea ice and ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation. The data are stored in qfit binary format and are available via FTP for periodic campaigns from 23 June 1993 to 30 October 2008.

Operation IceBridge products may include test flight data that are not useful for research and scientific analysis. Test flights usually occur at the beginning of campaigns. Users should read flight reports for the flights that collected any of the data they intend to use. Check IceBridge campaign Flight Reports for dates and information about test flights.

The directory structure for this data set is described in the 00README.txt file.

Data are available via FTP and HTTPS.

Data set DOI: