Elevation (height of land above mean sea level) and Bathymetry (depth of the ocean 
floor below mean sea level) in a 1-degree grid for the entire surface of the Earth. 
Thick ice caps are partially responsible for the relatively high elevations shown 
for Greenland and Antarctica. Elevations for some coastal and oceanic cells have 
been given an arbitrary elevation of 1 meter. 

Data from "Global Relief Data From NGDC" CD, produced by the United States 
Department of Commerce, National Oceanic and Atmospheric Administration, National 
Environmental Satellite, Data, and Information Service, National Geophysical Data 
Center, Marine Geology and Geophysics Division. Comments and questions to: 
Dr. Peter W. Sloss, MGG Division, Code E/GC3, NOAA-NGDC, 325 Broadway, Boulder, 
Colorado 80303-3328.
