Global Land Information System

The Global Land Information System (GLIS) is an interactive computer system developed by the U.S. Geological Survey (USGS) for scientists seeking sources of information about the Earth's land surfaces. GLIS contains metadata that is, descriptive information about data sets. Through GLIS, scientists can evaluate data sets, determine their availability, and place online requests for products. GLIS is more than a mere list of products. It offers online samples of earth science data that may be ordered through the system.

Scientists can use GLIS to bring up outlines of the geographic areas covered by the data sets. Using digital browse functions to manipulate the data, they can determine such information as the amount of cloud coverage or the quality of an image.

Online requests can be placed via GLIS for earth science data. The producing organization will receive the request and provide the user with price and ordering information.

GLIS contains references to regional, continental, and global land information including land use, land cover, and soils data; cultural and topographic data; and remotely sensed satellite and aircraft data. GLIS is routinely updated with new data set descriptions, as they are contributed by the global change scientific community. GLIS inventories are reviewed daily to assure access to the most current information. The system operates 24 hours a day, 7 days a week for world-wide connectivity and availability.

Users wishing to perform graphic-based query functions can use an X terminal or X terminal emulator package on a PC.

From
INTERNET:      TELNET xglis.cr.usgs.gov

Users wishing to perform text-based query functions can use an alphanumeric terminal or a terminal emulator package on a PC.

INTERNET:      TELNET glis.cr.usgs.gov
or
              TELNET 152.61.128.07

More information is available from the following Guides:

• 1:100,000-Scale Digital Line Graphs (FTP access to data from Guide)
• 1-degree USGS Digital Elevation Models (FTP access to data from Guide)
• 1:2,000,000-Scale Digital Line Graph (FTP access to data from Guide)
• 1:2,000,000-Scale Hydrologic Unit Maps
• 30 Arc-Sec. DCW Digital Elevation Models (FTP access to data from Guide)
• 30 Arc-Sec. Digital Elevation Model Data
• 5 Minute Gridded Earth Topography Data
• Advanced Very High Resolution Radiometer
• Alaska AVHRR Twice-Monthly Composites
• Black Hills GIS Data
• Conterminous U.S. AVHRR
• Conterminous U.S. Land Cover Characteristics Data Set 1990 Prototype
• Digital Chart of the World - DOS
• Digital Orthophoto Quadrangles
• Global Experimental Bi-Weekly Norm.Diff.
• Global Hydrographic Data
• Major Land Resource Area
• Major World Ecosystems
• Matthews Global Vegetation Data Set
• MultiSpectral Scanner Landsat Data
• MultiSpectral Scanner LGSOWG Data
• NASA Aerial Photography
• National Aerial Photography Program
• North American Landscape Characterization
• Northern Great Plains 1988 AVHRR
• Omernik Ecoregions Data
• Sahel & NW Africa 14-Day NDVI Composites
• Side-Looking Airborne Radar
• Skylab, Gemini, and Apollo Photography
• Space Shuttle Earth Observation Program
• SPOT
• Thematic Mapper Landsat Data
• Thematic Mapper LGSOWG Data
• US Geological Survey Aerial Photography
• USGS Land Use and Land Cover Data
• U.S. Government Aerial Photography
• Western Oregon Digital Data Base
• Zobler World Soils Data Set

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Last modified: 31 December 1994.