Global Relief Model

About: Global Relief Model is a research topic. Over the lifetime, 6 publications have been published within this topic receiving 3119 citations.

ETOPO1 1 Arc-Minute Global Relief Model

Abstract: in august 2008 the national geophysical data center ngdc an office of the national oceanic and atmospheric administration noaa developed the etopo1 global relief model as an improvement to the etopo2v2 global relief model etopo1 is available in ice surface top of antarctic and greenland ice sheets and bedrock base of the ice sheets versions both versions of etopo1 were generated from diverse global and regional digital data sets which were shifted to common horizontal and vertical datums and then evaluated and edited as needed bathymetric topographic and shoreline data used in etopo1 were obtained from ngdc antarctic digital database add european ice sheet modeling initiative eismint scientific committee on antarctic research scar japan oceanographic data center jodc caspian environment programme cep mediterranean science commission ciesm national aeronautics and space administration nasa national snow and ice data center nsidc scripps institute of oceanography sio and leibniz institute for baltic sea research libsr etopo1 is vertically referenced to sea level and horizontally referenced to the world geodetic system of 1984 wgs 84 cell size for etopo1 is 1 arc minute

Accuracy validation and comparison of global digital elevation models over Croatia

Abstract: Accuracy assessment of digital elevation models (DEMs) plays an important role in facing their use in geoscience applications. This study investigates the vertical accuracy of most recently published versions of global DEMs over Croatia: 1 arc-minute global relief model (ETOPO1), Global 30 Arc-Second Elevation (GTOPO30), SRTM30+, Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010), Altimeter Corrected Elevations 2 DEM (ACE2 DEM), Shuttle Radar Topography Mission GDEM (SRTM GDEM), and Advanced Spaceborne Thermal Emission and Reflection GDEM (ASTER GDEM). Geodetic ground control points (benchmarks) allowed the comparison in terms of vertical accuracy. Additionally, the differences between models in the identical points were determined and analysed after adjusting the models to the same resolution. The results have yielded information about the overall accuracy of models; the accuracy depending on height, land cover, and slope; presence of large and systematic errors; and mutual agreement between...