| Global Land One-kilometer Base Elevation (GLOBE) v.1 |
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GLOBE is a project to develop the best available 30-arc-second (nominally 1 kilometer)
global digital elevation data set. This version of GLOBE contains data from 11 sources,
and 17 combinations of source and lineage. It continues much in the tradition of the
National Geophysical Data Center's TerrainBase (FGDC 1090), as TerrainBase served
as a generally lower-resolution prototype of GLOBE data management and compilation
techniques. The GLOBE mosaic has been compiled onto CD-ROMs for the international
user community. It is also available from the World Wide Web (linked from the online
linkage noted above and anonymous ftp. Improvements to the global model are anticipated,
as appropriate data and/or methods are made available. In addition, individual contributions
to GLOBE (several areas have more than one candidate) should become available at the
same website. GLOBE may be used for technology development, such as helping plan infrastructure
for cellular communications networks, other public works, satellite data processing,
and environmental monitoring and analysis. GLOBE prototypes (and probably GLOBE itself
after its release) have been used to help develop terrain avoidance systems for aircraft.
In all cases, GLOBE data should be treated as any potentially useful but guaranteed
imperfect data set. Mission- or life-critical applications should consider the documented
artifacts, as well as likely undocumented imperfections, in the data. |
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