The Reference Elevation Model of Antarctica

Howat, Ian M.; Porter, Claire; Smith, Benjamin E.; Noh, Myoung-Jong; Morin, Paul

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.

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Howat, Ian M. / Porter, Claire / Smith, Benjamin E. / et al: The Reference Elevation Model of Antarctica. 2019. Copernicus Publications.

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Rechteinhaber: Ian M. Howat et al.

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