Greenland Ice Sheet crevasse map from ArcticDEM
Data Description Parameter 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...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://zenodo.org/record/6779088 https://doi.org/10.5281/zenodo.6779088 |
id |
ftzenodo:oai:zenodo.org:6779088 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:6779088 2023-05-15T16:21:24+02:00 Greenland Ice Sheet crevasse map from ArcticDEM Chudley, Thomas R. 2022-06-29 https://zenodo.org/record/6779088 https://doi.org/10.5281/zenodo.6779088 eng eng doi:10.1029/2021JF006287 doi:10.5281/zenodo.6779087 https://zenodo.org/record/6779088 https://doi.org/10.5281/zenodo.6779088 oai:zenodo.org:6779088 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode crevasses greenland ice sheet glacier topography remote sensing info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.5281/zenodo.677908810.1029/2021JF00628710.5281/zenodo.6779087 2023-03-11T04:01:03Z Data Description Parameter 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) 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). 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. Value 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. Value 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 Greenland Ice Sheet is generated using ArcticDEM v3 mosaic data at 2 m resolution (Porter et al., 2018), with data processed in Google Earth Engine (Gorelick et al., 2017). The ArcticDEM is cropped to the GIMP ice mask (Howat et al., 2014), before a smoothed elevation model is generated by performing an image convolution with a circular kernel of 50 m radius. Residuals greater than 1 m between the smoothed and raw elevation values were identified as crevasses. To compare with public velocity datasets (and derived strain rates, stress, etc.), the 2 m dataset was aggregated (using GDAL) into grid cells to match the resolution (200 m) of the Making ... Dataset glacier Greenland Ice Sheet Sea ice Zenodo Greenland |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
crevasses greenland ice sheet glacier topography remote sensing |
spellingShingle |
crevasses greenland ice sheet glacier topography remote sensing Chudley, Thomas R. Greenland Ice Sheet crevasse map from ArcticDEM |
topic_facet |
crevasses greenland ice sheet glacier topography remote sensing |
description |
Data Description Parameter 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) 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). 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. Value 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. Value 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 Greenland Ice Sheet is generated using ArcticDEM v3 mosaic data at 2 m resolution (Porter et al., 2018), with data processed in Google Earth Engine (Gorelick et al., 2017). The ArcticDEM is cropped to the GIMP ice mask (Howat et al., 2014), before a smoothed elevation model is generated by performing an image convolution with a circular kernel of 50 m radius. Residuals greater than 1 m between the smoothed and raw elevation values were identified as crevasses. To compare with public velocity datasets (and derived strain rates, stress, etc.), the 2 m dataset was aggregated (using GDAL) into grid cells to match the resolution (200 m) of the Making ... |
format |
Dataset |
author |
Chudley, Thomas R. |
author_facet |
Chudley, Thomas R. |
author_sort |
Chudley, Thomas R. |
title |
Greenland Ice Sheet crevasse map from ArcticDEM |
title_short |
Greenland Ice Sheet crevasse map from ArcticDEM |
title_full |
Greenland Ice Sheet crevasse map from ArcticDEM |
title_fullStr |
Greenland Ice Sheet crevasse map from ArcticDEM |
title_full_unstemmed |
Greenland Ice Sheet crevasse map from ArcticDEM |
title_sort |
greenland ice sheet crevasse map from arcticdem |
publishDate |
2022 |
url |
https://zenodo.org/record/6779088 https://doi.org/10.5281/zenodo.6779088 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Sea ice |
genre_facet |
glacier Greenland Ice Sheet Sea ice |
op_relation |
doi:10.1029/2021JF006287 doi:10.5281/zenodo.6779087 https://zenodo.org/record/6779088 https://doi.org/10.5281/zenodo.6779088 oai:zenodo.org:6779088 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.677908810.1029/2021JF00628710.5281/zenodo.6779087 |
_version_ |
1766009400116379648 |