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| Titel |
The Greenland Ice Mapping Project (GIMP) land classification and surface elevation data sets |
| VerfasserIn |
I. M. Howat, A. Negrete, B. E. Smith |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 4 ; Nr. 8, no. 4 (2014-08-19), S.1509-1518 |
| Datensatznummer |
250116264
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| Publikation (Nr.) |
 copernicus.org/tc-8-1509-2014.pdf |
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| Zusammenfassung |
| As part of the Greenland Ice Mapping Project (GIMP) we have produced
three geospatial data sets for the entire ice sheet and periphery. These are
(1) a complete, 15 m resolution image mosaic, (2) ice-covered and ice-free
terrain classification masks, also posted to 15 m resolution, and (3) a
complete, altimeter-registered digital elevation model posted at 30 m. The
image mosaic was created from a combination of Landsat-7 and RADARSAT-1
imagery acquired between 1999 and 2002. Each pixel in the image is stamped
with the acquisition date and geo-registration error to facilitate change
detection. This mosaic was then used to manually produce complete
ice-covered and ice-free land classification masks. Finally, we used
satellite altimetry and stereo-photogrammetric digital elevation models (DEMs) to enhance an existing
DEM for Greenland, substantially improving resolution and accuracy over the
ice margin and periphery. |
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