ETOPO1, Global 1 Arc-minute Ocean Depth and Land Elevation from the US National Geophysical Data Center (NGDC)

ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry. It was built from numerous global and regional data sets, and is available in "Ice Surface" (top of Antarctic and Greenland ice sheets) and "Bedrock" (base of the ice sheets) versions. Data are available in two grid registrations. For grid/node-registration, cells are centered on lines of latitude and longitude (21601 by 10801 cells), and for cell/pixel-registration, cell edges are along lines of latitude and longitude (21600 by 10800 cells). The grid-registered is the authoritative registration. The cell-registered is derived from the grid-registered, and the conversion produces slightly flattened relief.

To Access Resource:

Questions? Email Resource Support Contact:

  • Zaihua Ji
    zji@ucar.edu
    NSF NCAR - Geoscience Data Exchange

Keywords

Resource Type dataset
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat 90
Bounding Box South Lat -90
Bounding Box West Long -180
Bounding Box East Long 180
Spatial Representation grid
Spatial Resolution N/A
Related Links

Related Resource #1 : ETOPO1
Additional Information N/A
Resource Format NetCDF
Standardized Resource Format NetCDF
Asset Size 10159 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name Zaihua Ji
Resource Support Email zji@ucar.edu
Resource Support Organization NSF NCAR - Geoscience Data Exchange
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publisher NSF National Center for Atmospheric Research
Publication Date 2011-11-08
Digital Object Identifier (DOI) https://doi.org/10.5065/D69Z92Z5
Alternate Identifier d759004
Resource Version N/A
Topic Category elevation
Progress completed
Metadata Date 2025-10-03T01:39:14Z
Metadata Record Identifier edu.ucar.gdex::d759004
Metadata Language eng; USA
Suggested Citation National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce. (2011). ETOPO1, Global 1 Arc-minute Ocean Depth and Land Elevation from the US National Geophysical Data Center (NGDC). NSF National Center for Atmospheric Research. https://doi.org/10.5065/D69Z92Z5. Accessed 08 October 2025.

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