250 million measurements have resulted in the release of the highest available resolution digital elevation model (DEM) covering Antarctica. The model was developed from data collected by CryoSat-2 altimetry between July 2010 and July 2016. The 1 kilometer resolution DEM is covers about 350,000 sq. km. more area than the previous DEM published in March 2017. The DEM covers elevation measurements for 94% of the continents ice sheets and 98% of ice shelf grid cells.
CryoSat’s radar altimeter is able to detect minor changes in ice height across Antarctica which means researchers will be able to track changes in the continents ice sheet.
The DEM can be downloaded from the Centre for Polar Observation and Modelling (CPOM) portal.
The details about the development of this DEM are available in:
Slater, Shepherd, McMillan, Muir, Gilbert, Hogg, Konrad and Parrinello: A new digital elevation model of Antarctica derived from CryoSat-2 altimetry, The Cryosphere, 2018. DOI 10.5194/tc-12-1551-2018.