New data set available: NASA MEaSUREs ITS_LIVE scene-pair velocity data set
The NASA MEaSUREs ITS_LIVE scene-pair velocity data set is now available online at NASA Jet Propulsion Laboratory, with a new tool for rapidly selecting and filtering the data. This new data set consists of single-pair image-correlation-based ice flow velocities generated from the entire Landsat 4, 5, 7 & 8 archive. The 8 million individual scene-pairs cover all the permanent ice-covered areas larger than 5 km2, globally. It spans 1984 to early 2019 and has a spatial resolution of 240m. Regular updates to near-real-time (~1 to 2 months latency) are planned before the end of the year.
The new selection tool allows users to quickly search for available scene-pairs in any glaciered area, and to filter the results based on the fraction of coverage, image pair time-span, and temporal range. Access to the data is provided through a web application hosted at the National Snow and Ice Data Center (NSIDC): https://nsidc.org/apps/itslive/.
This data set is 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. The ITS_LIVE project provides global low-latency measurements of glacier and ice sheet surface velocity and elevation change at high temporal resolution.