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

Description

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 currently consists of NetCDF Level 2 scene-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. We have processed all land-ice intersecting image pairs separated by ≤546 days for optical and ≤12 for SAR sensors, for all missions from each mission start to the end of 2022. The ITS_LIVE project will continue processing new optical and radar scene pairs as they come in, and will soon increase production to include SAR image pairs separated by more than 12 days. We also expect to extend processing to include ASTER, RADARSAT, and NISAR imagery. Further, all scene pair data are combined into a set of Zarr datacubes that are cloud-optimized for time-series analysis, with a suite of user tools available to query the data effectively. The ITS_LIVE project is also producing a suite of Level 3 products, including quarterly and annual ice-sheet and regional velocity mosaics as Cloud-Optimized GeoTIFFs, standardized records of elevation change rates for Greenland and Antarctica, and ice shelf and tidewater glacier front positions. For more information about the ITS_LIVE project, please see https://its-live.jpl.nasa.gov/.

Update Frequency

Up to daily, as new satellite imagery is made available.

License

Creative Commons Zero (CC0) 1.0 Universal License

Documentation

https://its-live-data.s3.us-west-2.amazonaws.com/README.html

Managed By

The Alaska Satellite Facility (ASF)

See all datasets managed by The Alaska Satellite Facility (ASF).

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.

How to Cite

Inter-mission Time Series of Land Ice Velocity and Elevation (ITS_LIVE) was accessed on DATE from https://registry.opendata.aws/its-live-data. https://its-live.jpl.nasa.gov/#how-to-cite

Usage Examples

Tutorials

• ITS_LIVE Point Data Access by Maria Liukis, Alex S. Gardner, Luis A. López, Mark Fahnestock, and Joseph H. Kennedy
  
  
• Using xarray to examine cloud-based glacier surface velocity data by Emma Marshall
  

Tools & Applications

• A serverless React-Leaflet website to plot and share ITS_LIVE data by Jacob Fahnestock
  
• Chad Greene's ITS_LIVE Matlab collection by Chad A. Greene
  
• ITS_LIVE Data Access API by NSIDC
  
• ITS_LIVE Data Access Portal by NSIDC
  
• ITS_LIVEpy: A Python client for ITS_LIVE glacier velocity data by Luis A. López and Mark Fahnestock
  
• ITS_LIVE_TOOL: A package designed to aid users working with the ITS_LIVE data by Victor Devaux-Chupin and Emma Marshall
  

Publications

• Antarctic calving loss rivals ice-shelf thinning by Greene, C.A., A.S. Gardner, N.-J. Schlegel, and A.D. Fraser
  
• Autonomous Repeat Image Feature Tracking (autoRIFT) and Its Application for Tracking Ice Displacement. Remote Sensing by Lei, Y., A.S. Gardner, and P. Agram
  
• Detecting seasonal ice dynamics in satellite images by Greene, C.A., A.S. Gardner, and L.C. Andrews
  
• Elevation change of the Antarctic Ice Sheet: 1985 to 2020 by Nilsson, J., A.S. Gardner, and F.S. Paolo
  
• Increased West Antarctic and unchanged East Antarctic ice discharge over the last 7 years by Gardner, A. S., G. Moholdt, T. Scambos, M. Fahnstock, S. Ligtenberg, M. van den Broeke, and J. Nilsson
  
• Processing methodology for the ITS_LIVE Sentinel-1 ice velocity products by Lei, Y., A.S. Gardner, and P. Agram
  
• Ubiquitous acceleration in Greenland Ice Sheet calving from 1985 to 2022 by Greene, C.A., A.S. Gardner, M. Wood, and J.K. Cuzzone
  
• Widespread slowdown in thinning rates of West Antarctic Ice Shelves by Paolo, F. S., A.S. Gardner, C.A. Greene, J. Nilsson, M.P. Schodlok, N.-J. Schlegel, and H.A. Fricker