This is mosaiced Landsat ETM+ and RADARSAT imagery from the years 1999 to 2002, distributed as 8-bit geotiffs in the tiles shown. For each tile there is one image for each band, plus an index image in which each pixel gives the index number of its corresponding source image in an accompanying metadata ﬁle. The metadata ﬁle lists each Landsat scene identiﬁcation number (scene ID) used in the mosaic for that tile, the acquisition time, and the root-mean-square control point registration error where available. The original scene ID, acquisition date and geo-location error for any pixel in an image can thus be obtained using the index image. Please see the paper referenced below for more information about these data.
Howat, I.M., A. Negrete, B.E. Smith, 2014, The Greenland Ice Mapping Project (GIMP) land classification and surface elevation datasets, The Cryosphere, 8, 1509-1518, doi:10.5194/tc-8-1509-2014 abstract | article [pdf]
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