- Dataset Availability
- 2010-07-01 - 2016-07-01
- Dataset Provider
- Earth Engine Snippet
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, respectively.
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.
Antarctic ice sheet and ice shelf elevation.
Data processing method of elevation per grid cell.
Slope derived from elevation gradient.
Smoothed version of elevation model using a median filter.
Certainty of elevation model derived from RMS of elevation residuals in observed grid cells and the kriging variance error in interpolated grid cells.
data_composition Class Table
|1||CBCBCB||1 km fit|
|2||377EB7||resampled 2 km fit|
|3||E2191B||resampled 5 km fit|
The data are freely available. When using these data, please cite the provided article.
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