ETOPO1 dataset information page

Short Description

ETOPO1 Global Relief Model

Statement: Global integrated bathymetric-topographic relief model; 1 arc-minute (~2 km) cell size

Abstract: 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 format

Data type: Topography
Data origin: Modeled
Data format: GeoTIFF, NetCDF, Binary, ASCII
Other format:
Data resolution: 1 arc-minute cell size (horizontal); 1 meter (vertical)
Datum: WGS 84 geographic (horizontal); sea level (vertical)

Data Coverage

Spatial data coverage: Global
Temporal data coverage: Time averaged
Time period covered:


Download data:
Data source:


  • Amante, C. and B. W. Eakins, ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis. NOAA Technical Memorandum NESDIS NGDC-24, 19 pp, March 2009.