The data portal uses over 37,000 Landsat image—going all the way back to 1972—to monitor glacier movement.
The authors write:
“The long time span covered by the Landsat scenes allows us to determine long-term flow velocity trends. The high temporal resolution lets us analyze seasonal flow velocity variations of numerous outlet glaciers…The monitoring system provides a powerful tool to examine the flow velocity pattern throughout time and space, and we have detected an acceleration pattern for a number of outlet glaciers.”
Read the full article:
+ Scheinert, M., R. Rosenau, and B. Ebermann (2016), Using landsat to take the long view on Greenland’s glaciers, Eos, 97, doi:10.1029/2016EO065625. Published on 29 December 2016.
Visit the data portal:
+ Velocity fields of Greenland outlet glaciers
Reference:
Rosenau, R.; Scheinert, M.; Dietrich, R. (2015): A processing system to monitor Greenland outlet glacier velocity variations at decadal and seasonal time scales utilizing the Landsat imagery. Remote Sens. Environ., 169, 1-19, doi: 10.1016/j.rse.2015.07.012

Influencing Factors: Satellites Help Decipher the Fate of West Antartica
An international team of researchers has combined satellite imagery and climate and ocean records to obtain the most detailed understanding yet of how the West Antarctic Ice Sheet – which contains enough ice to raise global sea level by 3.3 metres – is responding to climate change.