Association of Polar Early Career Scientists


We would like to draw your attention to a new surface velocity data set from Sentinel-1 radar imagery for glaciers and ice caps outside the large ice sheets. We have processed the Sentinel-1 archive since 2014 and routinely process upcoming new data using the same intensity offset tracking algorithm and post-processing. The data is provided free of charge for non-commercial usage to registered users via a web interface with spatial query function (

New data becomes available upon the accessibility of Sentinel-1 precise orbits. We provide year-round glacier surface velocity fields at 200m spatial resolution for individual time intervals, but also monthly and annually stacked mosaics. Meta information is provided with the data and via the portal.

More information on the processing can be found in a separate data publication in Earth System Science Data currently in review (Friedl, P., Seehaus, T., and Braun, M.: Global time series and temporal mosaics of glacier surface velocities, derived from Sentinel-1 data, Earth Syst. Sci. Data Discuss. [preprint],, in review, 2021). The setup of the automated processing was funded by the German Federal Ministry for Economic Affairs and Energy as well as the German Aerospace Center (DLR).

Contact APECS

APECS International Directorate
Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research
Telegrafenberg A45
14473 Potsdam
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