CryoSat-2 Antarctica 1km DEM (CPOM/CryoSat2/ANTARCTICA_DEM)

Version 1.0

This dataset is a digital elevation model (DEM) of the
Antarctic ice sheet and ice shelves based on
observations recorded by the CryoSat-2 satellite
radar altimeter between July 2010 and July 2016.

The DEM is formed from spatio-temporal fits to elevation
measurements accumulated within 1, 2, and 5 km grid cells,
and is posted at the modal resolution of 1 km. The median
and root mean square difference between the DEM and 2.3*10⁷
airborne laser altimeter measurements acquired during
NASA Operation IceBridge campaigns are -0.30 and 13.50 m,

The DEM uncertainty rises in regions of high slope,
especially where elevation measurements were acquired in
low-resolution mode; taking this into account, we estimate
the average accuracy to be 9.5 m.

NameDescriptionGee Unit
elevationAntarctic ice sheet and ice shelf elevation.meters
data_compositionData processing method of elevation per grid cell.
slopeSlope derived from elevation gradient.degrees
z_smoothedSmoothed version of elevation model using a median filter.meters
z_uncertaintyCertainty of elevation model derived from RMS of elevation residuals in observed grid cells and the kriging variance error in interpolated grid cells.meters


CPOM (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords CPOM, CryoSat-2, antarctica, dem, elevation, polar
License proprietary
Temporal Extent 6/30/2010, 5:00:00 PM - 6/30/2016, 5:00:00 PM
Citation Slater, T., Shepherd, A., McMillan, M., Muir, A., Gilbert, L., Hogg, A. E., Konrad, H. and Parrinello, T.: A new Digital Elevation Model of Antarctica derived from CryoSat-2 altimetry, The Cryosphere, [doi:10.5194/tc-2017-223](, 2018
Type image
GSD metersm