![CPOM/CryoSat2/ANTARCTICA_DEM](https://developers.google.com/earth-engine/datasets/images/CPOM/CPOM_CryoSat2_ANTARCTICA_DEM_sample.png)

Dataset Availability
:   2010-07-01T00:00:00Z--2016-07-01T00:00:00Z

Dataset Producer
:


    [CPOM](https://cpom.org.uk/datasets/)

Tags
:
    [antarctica](https://developers.google.com/earth-engine/datasets/tags/antarctica) [dem](https://developers.google.com/earth-engine/datasets/tags/dem) [elevation](https://developers.google.com/earth-engine/datasets/tags/elevation) [elevation-topography](https://developers.google.com/earth-engine/datasets/tags/elevation-topography) [polar](https://developers.google.com/earth-engine/datasets/tags/polar) cpom cryosat-2

#### Description

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\*10^7^;
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.

### Bands

**Bands**

Pixel size: 1000 meters (all bands)

| Name | Units | Pixel Size | Description |
|---|---|---|---|
| `elevation` | m | 1000 meters | Antarctic ice sheet and ice shelf elevation. |
| `data_composition` |   | 1000 meters | Data processing method of elevation per grid cell. |
| `slope` | deg | 1000 meters | Slope derived from elevation gradient. |
| `z_smoothed` | m | 1000 meters | Smoothed version of elevation model using a median filter. |
| `z_uncertainty` | m | 1000 meters | 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**

| Value | Color | Description |
|---|---|---|
| 0 | #000000 | interpolated |
| 1 | #cbcbcb | 1 km fit |
| 2 | #377eb7 | resampled 2 km fit |
| 3 | #e2191b | resampled 5 km fit |

### Terms of Use

**Terms of Use**

The data are freely available. When using these data, please cite the
provided article.

### Citations

Citations:

- 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

### DOIs

- <https://doi.org/10.5194/tc-2017-223>

### Explore with Earth Engine

> [!NOTE]
> **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)

### Code Editor (JavaScript)

```javascript
var dataset = ee.Image('CPOM/CryoSat2/ANTARCTICA_DEM');

var visualization = {
  bands: ['elevation'],
  min: 0.0,
  max: 4000.0,
  palette: ['001fff', '00ffff', 'fbff00', 'ff0000']
};

Map.setCenter(17.0, -76.0, 3);

Map.addLayer(dataset, visualization, 'Elevation');
```
[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CPOM/CPOM_CryoSat2_ANTARCTICA_DEM) [CryoSat-2 Antarctica 1km DEM](https://developers.google.com/earth-engine/datasets/catalog/CPOM_CryoSat2_ANTARCTICA_DEM) 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 ... CPOM/CryoSat2/ANTARCTICA_DEM, antarctica,dem,elevation,elevation-topography,polar 2010-07-01T00:00:00Z/2016-07-01T00:00:00Z -88 -180 -60 180 Google Earth Engine https://developers.google.com/earth-engine/datasets

- [https://doi.org/10.5194/tc-2017-223](https://doi.org/https://cpom.org.uk/datasets/)
- [https://doi.org/10.5194/tc-2017-223](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CPOM_CryoSat2_ANTARCTICA_DEM)