Abstract: Global Digital Elevation Model (GTOPO30) represents gridded 30 arc seconds (+- 1 Km) elevation for the world. These data were by developed by the USGS EROS Data Center in 1996 from a variety of data sources. The VALUE attribute represents the elevation in meters.

Purpose: Global Digital Elevation Model (GTOPO30) provides a base map layer displaying global elevation information for geographic analysis on global, regional, and national scales.

Supplemental: Largest scale when displaying the data: 1:3,500,000.

Publication Date: 20080401

Originator: U.S. Geological Survey, EROS Data Center Distributed Active Archive Center (EDC DAAC)

Bounding coordinates:
West: -180.000000
East: 180.000000
North: 90.000000
South: -90.000000

Place Keywords: World

Theme Keywords: image, elevation

Geographic: GCS_WGS_1984

Metadata date: 20040318