The Reference Elevation Model of Antarctica

The Reference Elevation Model of Antarctica (REMA) is the first continental-scale digital elevation model (DEM) at a resolution of less than 10 m. REMA is created from stereophotogrammetry with submeter resolution optical, commercial satellite imagery. The higher spatial and radiometric resolutions...

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Bibliographic Details
Published in:The cryosphere 2019-02, Vol.13 (2), p.665-674
Main Authors: Howat, Ian M, Porter, Claire, Smith, Benjamin E, Noh, Myoung-Jong, Morin, Paul
Format: Article
Language:English
Subjects:
Airborne lasers
Altimetry
Analysis
Datasets
Digital Elevation Models
Elevation
Glaciation
Ice sheets
Image contrast
Image quality
Imagery
Lasers
Radar
Remote sensing
Resolution
Satellite imagery
Satellite radar
Satellites
Satellites (Spacecraft)
Sensors
Software packages
Spaceborne remote sensing
Stereophotogrammetry
Topography (geology)
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Description
Summary:The Reference Elevation Model of Antarctica (REMA) is the first continental-scale digital elevation model (DEM) at a resolution of less than 10 m. REMA is created from stereophotogrammetry with submeter resolution optical, commercial satellite imagery. The higher spatial and radiometric resolutions of this imagery enable high-quality surface extraction over the low-contrast ice sheet surface. The DEMs are registered to satellite radar and laser altimetry and are mosaicked to provide a continuous surface covering nearly 95 % the entire continent. The mosaic includes an error estimate and a time stamp, enabling change measurement. Typical elevation errors are less than 1 m, as validated by the comparison to airborne laser altimetry. REMA provides a powerful new resource for Antarctic science and provides a proof of concept for generating accurate high-resolution repeat topography at continental scales.
ISSN:1994-0424
1994-0416
1994-0424
1994-0416
DOI:10.5194/tc-13-665-2019