Advanced Ice Velocity
Advanced Ice Velocity
In the 5DAIS project , ice velocity data sets will continue to be updated to present day covering the Antarctic Ice Sheet margins at 200m grid resolution at high temporal resolution (12-days). By combining this with historical ice speed measurements where data exists from historical ESA missions such as ERS-1 and ERS-2, we will produce long term timeseries of speed change. The high frequency, short temporal resolution provided by Sentinel-1 synthetic aperture radar since 2014 will enable us to measure and monitor shorter-term speed variability such as episodic speed change on major outlet glaciers including Thwaites Glacier in West Antarctica, or seasonal speed variability which is now known to be widespread across the West Antarctic Peninsula.
Larsen-C ice flow velocity derived from Copernicus Sentinel-1 data acquired from 2015-2019.
Summary of ice velocity datasets planned within 5DAIS:
- Up-to-date ice sheet-wide ice velocity datasets from Sentinel-1 (where the S1 acquisition plan allows), at the finest temporal resolution possible. This will be provided as gridded datasets or timeseries depending on the scientific requirements of the project.
- Ice speed measurements over Antarctic ice shelves and floating ice tongues, corrected for tidal and atmospheric variability. Again, this will be provided either as a gridded dataset or time series depending on the scientific requirements identified in WP1.
- Full uncertainty quantification.