Processed Bathymetry grids (ESRI ASCII format) of the Greenland margin (AR76-01, 2023)

Bathymetry data from the western Greenland continental margin were collected on R/V Neil Armstrong in 2023 (AR7601; Hatfield et al., 2023) to study the Last Glacial Maximum extent and initial deglacial retreat of the Greenland Ice Sheet. The multibeam data were collected with a Kongsberg EM 122 (12 kHz, 1° x 2° beam width). XBTs and CTD casts conducted throughout the cruise were applied to the multibeam data for corrections to sound speed in the water column during acquisition. Data were processed for erroneous points and to remove data artifacts as much as possible using QPS Qimera (https://qps.nl/qimera/). Conditions were icy, which caused lots of turns, reversing, and variable speeds during data collection. Data were gridded at different resolutions based on depth of features and regional size of resulting grid area. These range from 35 m cell size to 15 m cell size. The resultant grids are in ESRI ASCII grid format. The data sets were primarily collected on the slope from the northern side of four trough mouth fans (TMF). Each file name refers to the area in which it was collected (Melville, Upernavik, Uummannaq, Disko) and the grid cell size in meters. Additional grids with just trough mouth fan (TMF) data, data through the trough itself, and/or a transit between systems have that information in the file name. The Disko_20.asc grid has a spatial reference of WGS84/UTM Zone 21N (EPSG:32621). All other grids have a spatial reference of WGS84/UTM Zone 20N (EPSG:32620). These data sets were collected for the project The Baffin Bay Deglacial Experiment (BADEX). Funding was provided by the U.S. National Science Foundation under awards OCE21-12498, OCE21-12529, OCE21-12536, OCE21-12547, and OCE23-00114.