Overview
ETOPO1 is a 1 arc-minute global relief model of Earth’s surface that integrates land topography and ocean bathymetry. It is built from global and regional data sets, it is available in “Bedrock” (base of the ice sheets in extreme north and south).
ETOPO1 Global Relief Model is used to calculate the Volumes of the World’s Oceans and to derive a Hypsographic Curve of Earth’s Surface.

Variables
ocean_bathymetry_and_land_topography
Temporal coverage
Static (creation date 2009-03-01)
Geographical coverage
Latitude = 89.99/89.98; Longitude = -180/179.98
Vertical coverage
Surface
Spatial resolution
1 arc-minute (0.016°)
Update frequency
Not updated
Producer
NOAA
Data access
Static