Description
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This dataset contains derived mass loss data from marine-terminating glaciers in Greenland on a monthly timescale from 2010 up to and including 2020. Reference: Karlsson et al., 202, GEUS Bulletin (DOI: 10.34194/geusb.v53.833)
File structure: Data for each glacier outlet are stored as csv (comma separated values) that can be opened in Excel or loaded into Matlab, python etc. Files are named as glaciername_region_GateID.csv
A note on glacier names: In our dataset, glacier name is the official name in Greenlandic (following Bjoerk et al., 2015), region is the region of Greenland (following Mouginot and Rignot, 2019) and GateID is the ID of the discharge gate from Mankoff et al. 2020. We also list the names as used by Mouginot and Rignot (2019) but we advise against using those names in formal literature as they are not approved by the Greenland Language Secretariat. Multiple glaciers have no official name. They are listed as "Unknown". Some glacier names contain letters that are not easily machine-readable. We have made the following substitutions to ease the use of the data: Danish letters æ = ae ø = oe å = aa Other letters ö = ooe (Nordenskiöld) ü = ue (Brückner) Data The data consist of the following volume loss terms : Runoff Ice discharge Basal melt Total Volume loss The surface melt is derived from a regional climate model. The ice discharge stems from satellite observations of ice velocities. The basal melt is constructed from a combination of models and derived geothermal heat flux values. Please see Karlsson et al., 2023 and references therein for information on the individual volume loss terms. Using the dataset Users wishing to know the mass loss terms from a glacier basin may simply locate the csv-file with the corresponding glacier name in the datafolder. PLEASE NOTE: Some glaciers have more than one csv-file. This is because they have more than one branch of glacier flow. The total freshwater flux into a fjord from the glacier will then be the combined volume loss from all cvs files with the glacier name. E.g., the glacier Akullikassaap Sermia in northwestern Greenland has two discharge gates #133 and #134. The total output from Akullikassaap Sermia is then the sum of the terms in AkullikassaapSermia_NW_D133.csv and AkullikassaapSermia_NW_D134.csv. Users who do not know the glacier name may instead load the Geopackage file GlacierGates in a GIS software. The shapefile displays the location of each discharge gate and contains information on the glacier name, data filename, and the decadal mean of each volume loss term. The shapefile contains the following abbreviations: Ice discharge: abbreviated Ice dis. Basal melt: abbreviated Basal Total Volume loss: abbreviated Total loss
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