ETOPO1 Bedrock Global Relief ModelAlternate Views: Get Data, FAQ, ISO Rubric, DOI Rubric, CSW, HTML, Components, XML
ETOPO1 Bedrock Global Relief Model
browse graphicIn 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.

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ETOPO1 Bedrock Global Relief Model
ETOPO1 Bedrock Global Relief Model in netCDF format
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ETOPO1 Global Relief Model
Download page for accessing global relief model, metadata record and development report.
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Grid Extract
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Grid Extract
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Earths Bedrock Relief from ETOPO1
poster image of ETOPO1 Bedrock in pdf format
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Earths Bedrock Relief from ETOPO1
poster image of ETOPO1 Bedrock in png format
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Earths Bedrock Relief from ETOPO1
small image of ETOPO1 Bedrock in jpeg format
netCDF
Format version: 4.3.1
Compression: GZIP
GRD98
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binary
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xyz
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georeferenced tiff
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pdf
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png
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jpeg
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Use Limitation
Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.

Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.

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