Frontal ablation estimates for 49 tidewater glaciers in Greenland

This dataset contains frontal ablation estimates for 49 tidewater glaciers in Greenland which have been calculated using the following open source remote sensing data

1. TermPicks Terminus delineations (Goliber and Black, 2021).
2. Satellite image (for manual delineation of fjord walls).
3. Glacier velocity (code will automatically download ITS_LIVE velocities ~15 GB)
4. Two Digital Elevation Models (preferably ArcticDEM and AeroDEM; Porter et al., 2018, Korsgaard et al., 2016)
5. Surface change rate (Khan, 2017)
6. Bedrock Topography (BedMachine v4; Morlighem et al., 2017, 2021).
7. Solid Ice Discharge (Mankoff, 2019)

The dataset contains the following variables for each tidewater glacier:

• tbounds - boundaries of time intervals on which output data defined
• t - midpoint of time intervals on which output data defined
• D - discharge during time intervals [GT/yr]
• TMC - terminus mass change during time intervals [GT/yr]
• FA - frontal ablation during time intervals [GT/yr]
• D0 - discharge masking out interpolated values [GT/yr]
• TMC0 - terminus mass change masking out interpolated values [GT/yr]
• FA0 - frontal ablation masking out interpolated values [GT/yr]
• Error - Maximum error during time interval [GT/yr]

Note: The variable "tbounds" contains the boundary dates for the investigated time period while the frontal ablation estimates correspond to the midpoints of the time intervals. Therefore the last time boundary does not contain any estimates and is set to NaN. 

The processing chain to derive these frontal ablation estimates is described in Fahrner et al., (2023) and  can been found at https://zenodo.org/records/8414730. A tutorial on how to use the processing chain is available on GitHub (https://github.com/DominikFahrner/TG_FACT)
 

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When using this data set please cite:

Fahrner, D., Slater, D., KC, A., Cenedese, C., Sutherland, D.A., Enderlin, E., de Jong, F., Kjeldsen, K.K., Wood, M., Nienow, P. Nowicki, S., Wagner, T. (2023): A Frontal Ablation Dataset for 49 Tidewater Glaciers in Greenland

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References

Goliber, S. and Black, T., (2021) TermPicks: A century of Greenland glacier terminus data for use inmachine learning applications. [online] Available at: https://zenodo.org/record/5117931 [Accessed 27 May 2022].

Khan, S.A., (2017) Greenland Ice Sheet Surface Elevation Change. Available at: http://promice.org/PromiceDataPortal/api/download/90fb4cbf-e88e-4e26-af95-a47d19a9cf10.

Korsgaard, N.J., Nuth, C., Khan, S.A., Kjeldsen, K.K., Bjørk, A.A., Schomacker, A. and Kjær, K.H., (2016) Digital elevation model and orthophotographs of Greenland based on aerial photographs from 1978–1987. Scientific Data, [online] 31, p.160032. Available at: https://doi.org/10.1038/sdata.2016.32.

Mankoff, K.D., (2019) Ice dicharge for the Greenland ice sheet. Available at: https://doi.org/10.22008/PROMICE/DATA/ICE_DISCHARGE.

Morlighem, M., Williams, C., Rignot, E., An, L., Arndt, J.E., Bamber, J., Catania, G., Chauché, N., Dowdeswell, J.A., Dorschel, B., Fenty, I., Hogan, K., Howat, I., Hubbard, A., Jakobsson, M., Jordan, T.M., Kjeldsen, K.K., Millan, R., Mayer, L., Mouginot, J., Noël, B., O'Cofaigh, C., Palmer, S.J., Rysgaard, S., Seroussi, H., Siegert, M.J., Slabon, P., Straneo, F., Broeke, M.R. van den, Weinrebe, W., Wood, M. and Zinglersen, K., (2021) IceBridge BedMachine Greenland, Version 4.

Morlighem, M., Williams, C.N., Rignot, E., An, L., Arndt, J.E., Bamber, J.L., Catania, G., Chauché, N., Dowdeswell, J.A., Dorschel, B. and others, (2017) BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multibeam echo sounding combined with mass conservation. Geophysical research letters, 4421.

Porter, C., Morin, P., Howat, I., Noh, M.-J., Bates, B., Peterman, K., Keesey, S., Schlenk, M., Gardiner, J., Tomko, K., Willis, M., Kelleher, C., Cloutier, M., Husby, E., Foga, S., Nakamura, H., Platson, M., Wethington Jr., M., Williamson, C., Bauer, G., Enos, J., Arnold, G., Kramer, W., Becker, P., Doshi, A., D'Souza, C., Cummens, P., Laurier, F. and Bojesen, M.A.-N.S.F.A.-N.S.F., (2018) ArcticDEM. V1 ed. Available at: https://doi.org/10.7910/DVN/OHHUKH.