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Accuracy evaluation of an ASTER-Derived Global Digital Elevation Model (GDEM) Version 1 and Version 2 for two sites in western Africa

GIScience and Remote Sensing

By:
, ,
DOI: 10.2747/1548-1603.49.6.775

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Abstract

This study compares the ASTER Global DEM version 1 (GDEMv1) and version 2 (GDEMv2) for two study sites with distinct terrain and land cover characteristics in western Africa. The effects of land cover, slope, relief, and stack number are evaluated through both absolute and relative DEM statistical comparisons. While GDEMv2 at times performed better than GDEMv1, this improvement was not consistent, revealing the complex nature and interaction of terrain and land cover characteristics, which influences the accuracy of GDEM tiles on local and regional scales.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Accuracy evaluation of an ASTER-Derived Global Digital Elevation Model (GDEM) Version 1 and Version 2 for two sites in western Africa
Series title:
GIScience and Remote Sensing
DOI:
10.2747/1548-1603.49.6.775
Volume
49
Issue:
6
Year Published:
2012
Language:
English
Publisher:
Taylor & Francis
Contributing office(s):
National Center
Description:
27 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
GIScience and Remote Sensing
First page:
775
Last page:
801
Number of Pages:
27
Country:
Ghana;Mali
City:
Akwatia;K�ni�ba
Other Geospatial:
Akwatia;Ghana;K�ni�ba;Mali