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: Peter G. Chirico, Katherine C. Malpeli, and Sarah M. Trimble
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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.
Study Area
| 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 |
| Country | Ghana;Mali |
| City | Akwatia;K�ni�ba |
| Other Geospatial | Akwatia;Ghana;K�ni�ba;Mali |
| Google Analytic Metrics | Metrics page |