Identification of requirements and sources for global digital topographic data

Pecora 12 Symposium


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Many of the physical processes being studied by global change researchers are affects by land surface topography and consequently topographic data are an important requirement for these investigations. Remotely sensed data, especially those that will be collected by the instruments of the Earth Observing System, require significant correction to remove topographic effects. Although some requirements are met by existing topographic data, there are serious data shortages that will affect global change science. The interdisciplinary and multi temporal natural of global change research requires that remotely sensed data be processed using a consistent, highly accurate global topographic database so that information extracted from these data for different areas and times can be compared quantitively. Cartographic and remote sensing sources for the generation of new topographic data exist or are planned and will be helpful for fulfilling these requirements. More consistent use of accuracy statement terminology by data users and producers is necessary to better compare the requirements with existing or future data sets.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Identification of requirements and sources for global digital topographic data
Series title Pecora 12 Symposium
Year Published 1993
Language English
Publisher American Society for Photogrammetry and Remote Sensing
Publisher location Bethesda, MD
Description 10 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Pecora 12 Symposium
First page 35
Last page 44
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