| Summary: | This dataset is produced using the ArcticDEM v3 mosaic. Since release, the new ArcticDEM v4.1 mosaic has been released, and I have developed newer and open-source methods for extracting crevasse geometries from ArcticDEM and REMA strips. I am happy to help direct you towards the solution or dataset most appropriate for your needs - please contact me at thomas.r.chudley@durham.ac.uk. Data Description Title : Greenland Ice Sheet crevasse map from ArcticDEM Version : 1.00 Format : GeoTiff Projection : WGS84 / NSIDC Sea Ice Polar Stereographic North (EPSG: 3413) Resolution : 2 m (binary) and 200 m (fraction) Size : 3.5 GB (total binary) and 22 MB (total fraction) Citation : Chudley et al. (2021) https://doi.org/10.1029/2021JF006287 Contact : Tom Chudley Email : thomas.r.chudley@durham.ac.uk Products This dataset contains crevasse locations identified from the ArcticDEM v3 mosaic. There are two primary products: a 2 m binary crevasse map, and a 200 m crevasse fraction map. It is divided into the six IMBIE 'Rignot' drainage basins: central west (CW), southwest (SW), southeast (SE), northeast (NE), north (NO), northwest (NW). This dataset is for scientific purposes only. The method is not able to detectmetre-scaleand snow-covered crevasses, andshould not be used for field safety purposes. 2 m crevasse binary Byte GeoTiff product indicating derived crevasses at 2 m resolution. File naming convention is crevasse_binary_XX_2m.tif , where XX is the IMBIE basin code. Values have the following meaning: 0: No data 1: No crevasses identified 2: Crevasses identified 200 m crevasse fraction Float32 GeoTiff product indicating fraction of 200 m grid cell identified as crevasses in the 200 m product. File naming convention is crevasse_fraction_XX_2m.tif , where XX is the IMBIE basin code. Values have the following meaning: 0 - 1: Fraction of grid cell identified as crevasse in 2 m dataset -9999: No data Method The full processing chain for data derivation is described in Chudley et al. (2021). A binary crevasse mask of the ...
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