1Byrd Polar Research Center and School of Earth Sciences, Ohio State University, Columbus, OH, USA
2Polar Sciences Center, Applied Physics Lab., University of Washington, Seattle, WA, USA
Received: 30 Dec 2013 – Published in The Cryosphere Discuss.: 17 Jan 2014
Abstract. 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.
Revised: 07 Jul 2014 – Accepted: 09 Jul 2014 – Published: 19 Aug 2014
Howat, I. M., Negrete, A., and Smith, B. E.: The Greenland Ice Mapping Project (GIMP) land classification and surface elevation data sets, The Cryosphere, 8, 1509-1518, doi:10.5194/tc-8-1509-2014, 2014.