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,
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.
| Name | Description | Gee Unit |
|---|---|---|
| elevation | Antarctic ice sheet and ice shelf elevation. | meters |
| data_composition | Data processing method of elevation per grid cell. | |
| slope | Slope derived from elevation gradient. | degrees |
| z_smoothed | Smoothed version of elevation model using a median filter. | meters |
| z_uncertainty | Certainty of elevation model derived from RMS of elevation residuals in observed grid cells and the kriging variance error in interpolated grid cells. | meters |
Providers | |
|---|---|
| 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 |
| DOI | https://doi.org/10.5194/tc-2017-223 |
| 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](https://doi.org/10.5194/tc-2017-223), 2018 |
| Type | image |
| GSD | metersm |