Early data set release: ITS_LIVE Regional Glacier and Ice Sheet Surface Velocities

The NASA Jet Propulsion Laboratory (JPL) and the National Snow and Ice Data Center (NSIDC) are pleased to announce the ITS_LIVE Regional Glacier and Ice Sheet Surface Velocities, Beta Version data sets are now accessible through the JPL and NSIDC. These data sets are produced under the Inter-mission Time Series of Land Ice Velocity and Elevation (ITS_LIVE) project, part of NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) 2017 program, and include a set of regional compilations of annual mean surface velocities for all major glacier-covered regions, spanning the time period from 1985 to 2018. Surface velocities are derived from Landsat 4, 5, 7, and 8 imagery using the auto-RIFT feature tacking processing chain described in Gardner et al. (2018). Data scarcity and/or low radiometric quality are significant limiting factors for many regions in the earlier product years, however coverage is nearly complete for the years following the Landsat 8 launch in 2013. The annual mosaics are provided at 240 m and the complete time-averaged velocity mosaics are provided at 120 m spatial resolutions.

Access to the data is provided through a web application hosted at the NSIDC. The data documentation and web application for data selection is provided through the project web page at the JPL: https://its-live.jpl.nasa.gov/

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