MEaSUREs InSAR-based Antarctica ice flow-speed errors (%) relative to the speed. For general descriptions, see ice flow speed layer. Rignot, E., J. Mouginot, and B. Scheuchl. 2017. MEaSUREs InSAR-Based Antarctica Ice Velocity Map, Version 2. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/D7GK8F5J8M8R. Download: 12 April 2018 Original data include x and y error components (ERRX and ERRY, respectively) projected to EPSG3031. Speed error ERR is calculated as ERR = sqrt(ERRX^2 + ERRY^2), and then it was divided by the flow speed V. The map shows this relative error ERR/V in %. For more details of error estimates, visit: https://nsidc.org/data/nsidc-0484 As a condition of using these data, the authors request that you acknowledge the authors of this data set by referencing the following peer-reviewed publication. Rignot, E., J. Mouginot, and B. Scheuchl. 2011. Ice Flow of the Antarctic Ice Sheet, Science. 333. 1427-1430. https://doi.org/10.1126/science.1208336 Mouginot, J., B. Scheuchl, and E. Rignot. 2012. Mapping of Ice Motion in Antarctica Using Synthetic-Aperture Radar Data, Remote Sensing. 4. 2753-2767. https://doi.org/10.3390/rs4092753 Editor Anne LeBrocq A.LeBrocq@exeter.ac.uk Author Rignot et al / NSIDC nsidc@nsidc.org Old Version 1 (900m, 2011): https://nsidc.org/data/NSIDC-0484/versions/1