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Inter-mission Time Series of Land Ice Velocity and Elevation (ITS_LIVE) dataset

The Inter-mission Time Series of Land Ice Velocity and Elevation (ITS_LIVE) project has a singular mission: to accelerate ice sheet and glacier research by producing globally comprehensive, high resolution, low latency, temporally dense, multi-sensor records of land ice and ice shelf change while minimizing barriers between the data and the user.

ITS_LIVE data consists of:

  • NetCDF Level-2 scenes-pair ice flow products posted to a standard 120 m grid derived from Landsat 4/5/7/8/9, Sentinel-2 optical scenes, and Sentinel-1 SAR scenes.
  • A set of Zarr datacubes containing all scene pair data cloud-optimized for time-series analysis, with a suite of user tools available to query the data effectively.
  • A suite of Level 3 products, including:
    • regional and ice-sheet-wide velocity mosaics calculated monthly and annually as Cloud-Optimized GeoTIFFs
    • Antarctic 1985-2020 satellite-derived monthly elevation change
    • Antarcitc 1992–2017 satellite-derived 3-month ice shelf thickness and basal melt posted at 3km

For more information about the ITS_LIVE project, please see https://its-live.jpl.nasa.gov/.

Accessing the ITS_LIVE data

The ITS_LIVE data are all stored in the public its-live-data AWS S3 bucket, which is located in the us-west-2 (Oregon) AWS Region, and organized under a collection of prefixes (folders) to ease access:

  • autorift_parameters/: A collection of autoRIFT input parameter files used by the ITS_LIVE project to product the netCDF velocity image pairs
  • catalog_geojson/: GeoJSON catalog of the NetCDF velocity image pairs
  • composites/: Zarr mean annual velocities derived from the Zarr Datacubes
  • datacubes/: Zarr DataCubes of merged image velocity data which have been cloud-optimized for time-series analysis
  • rgb_mosaics/: Cloud-optimized GeoTIFF images derived from the NetCDF velocity mosaics for easy use in GIS applications
  • vel_web_tiles/: Tiled web map PNG images derived from the NetCDF mosaics for easy use in web applications
  • velocity_image_pair/: NetCDF velocity images derived from optical and SAR satellite image pairs using autoRIFT
  • velocity_mosaic/: NetCDF regionally compiled, mean annual surface velocities for major glacier-covered regions derived from the Zarr Datacubes

To list all the top-level bucket prefixes, run:

aws s3 ls s3://its-live-data/

[CAUTION!] There are over 1 billion objects in the its-live-data bucket. Recursively listing the whole bucket is not recommended.

Contact

If you have questions about the data itself or the processing methods used, please post in the ITS_LIVE Community gitter.

If you have questions about how the data is managed on AWS, please email the ASF Tools Team.

License

The use of the ITS_LIVE data falls under the terms and conditions of the Creative Commons Zero (CC0) 1.0 Universal license.

Registry of Open Data on AWS