Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) using ICESat geodetic control

C.C. Carabajal; D.J. Harding; J.-P. Boy; Jeffrey J. Danielson; D.B. Gesch; V.P. Suchdeo

doi:10.1117/12.912776

Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) using ICESat geodetic control

By: C.C. Carabajal, D.J. Harding, J.-P. Boy, Jeffrey J. Danielson, D.B. Gesch, and V.P. Suchdeo

https://doi.org/10.1117/12.912776

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Abstract

Supported by NASA's Earth Surface and Interior (ESI) Program, we are producing a global set of Ground Control Points (GCPs) derived from the Ice, Cloud and land Elevation Satellite (ICESat) altimetry data. From February of 2003, to October of 2009, ICESat obtained nearly global measurements of land topography (+/- 86deg latitudes) with unprecedented accuracy, sampling the Earth's surface at discrete approx.50 m diameter laser footprints spaced 170 m along the altimetry profiles. We apply stringent editing to select the highest quality elevations and use these GCPs to characterize and quantify spatially varying elevation biases in Digital Elevation Models (DEMs). In this paper, we present an evaluation of the soon to be released Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010). Elevation biases and error statistics have been analyzed as a function of land cover and relief. The GMTED2010 products are a large improvement over previous sources of elevation data at comparable resolutions. RMSEs for all products and terrain conditions are below 7 m and typically are about 4 m. The GMTED2010 products are biased upward with respect to the ICESat GCPs on average by approximately 3 m.

Additional publication details
Publication type	Conference Paper
Publication Subtype	Conference Paper
Title	Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) using ICESat geodetic control
DOI	10.1117/12.912776
Volume	8286
Year Published	2011
Language	English
Publisher	SPIE
Contributing office(s)	Earth Resources Observation and Science (EROS) Center
Description	82861Y
Larger Work Type	Book
Larger Work Subtype	Conference publication
Larger Work Title	Proceedings of SPIE - The International Society for Optical Engineering
Conference Title	International Symposium on Lidar and Radar Mapping 2011: Technologies and Applications
Conference Location	Nanjing, China
Conference Date	May 26-29, 2011
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