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Evaluation of the Global Multi-Resolution Terrain Elevation Data 2010 (GMTED2010) Using ICESat Geodetic ControlSupported 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.
Document ID
20110009936
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Carabajal, Claudia C. (Sigma Space Corp. MD, United States)
Harding, David J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boy, Jean-Paul (EOST-IPGS Strasbourg, France)
Danielson, Jeffrey J. (Geological Survey SD, United States)
Gesch, Dean B. (Geological Survey SD, United States)
Suchdeo, Vijay P. (Sigma Space Corp. MD, United States)
Date Acquired
August 25, 2013
Publication Date
May 26, 2011
Subject Category
Geophysics
Meeting Information
Meeting: ICA/ISPRS/FIG International Symposium on LIDAR and Radar Mapping: Technologies and Applications (LIDAR and RADAR 2011
Location: Najing
Country: China
Start Date: May 26, 2011
End Date: May 29, 2011
Sponsors: International Society for Photogrammetry and Remote Sensing, International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NNH09CF42C
Distribution Limits
Public
Copyright
Public Use Permitted.

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