Grounding line locations for Storstrømmen and L. Bistrup Bræ during 2015-2024

This dataset contains supplementary data and code for the article: 

"Brief communication: Storstrømmen glacier, Northeast Greenland, primed for end-of-decade surge", https://doi.org/10.5194/egusphere-2024-3382

Jonas K. Andersen, Rasmus P. Meyer, Flora S. Huiban, Mads L. Dømgaard, Romain Millan, and Anders A. Bjørk

The dataset contains grounding line locations for Storstrømmen and L. Bistrup Bræ, northeast Greenland. Grounding lines are generated from double-difference SAR interferograms using Sentinel-1 data for the period 2015-2024 from ascending track 74. Interferograms were generated for all available retrievals (every 6 days during 2016-2021, otherwise every 12 days) and a grounding line location was manually delineated for all instances were coherence was sufficiently retained. The grounding lines are stored in files:

Storstrommen_GL_S1.zip and LBistrup_GL_S1.zip

Additionally, the dataset contains code and data used to generate Figures 1-3 of the manuscript. The code is contained in python scripts:

Figure1.py, Figure2.py, and Figure3.py

The following supplementary data is provided:

ElevationChange_Storstrommen.csv - Elevation change data from the uppler/lower zones of Storstrømmen, estimated from NASA ATM and ArcticDEM data (see section 2.3 of the article)

GL_transect_storstrommen.zip - shapefile containing the transect used to estimate grounding line retreat for Storstrømmen

pha_dd_tifs_2018Oct - Double-difference interferograms documenting the drainage event presented in Figure 3a-c

pha_dd_tifs_2022Dec - Double-difference interferograms documenting the drainage event presented in Figure 3d-f