calculate_GZ_ICESat2_ATL11.py

  • Calculates ice sheet grounding zones using ICESat-2 annual land ice height data following [Brunt2010] [Fricker2006] [Fricker2009]

  • Outputs an HDF5 file of flexure scaled to match the downstream tide model

  • Outputs the grounding zone location, time and spatial uncertainty

Source code

Calling Sequence

–reanalysis -R : @after

usage: calculate_GZ_ICESat2_ATL11.py [-h] [--directory DIRECTORY]
                                     [--output-directory OUTPUT_DIRECTORY]
                                     [--mean-file MEAN_FILE] [--tide TIDE]
                                     [--reanalysis REANALYSIS] [--sea-level]
                                     [--crossovers] [--plot] [--verbose]
                                     [--mode MODE]
                                     infile [infile ...]

Positional Arguments

infile

ICESat-2 ATL11 file to run

Named Arguments

--directory, -D

Working data directory

--output-directory, -O

Output data directory

--mean-file

Mean elevation file to remove from the height data

--tide, -T

Tide model to use in correction

--reanalysis, -R

Reanalysis model to use in inverse-barometer correction

--sea-level, -S

Remove mean dynamic topography from heights

--crossovers, -C

Run ATL11 Crossovers

--plot, -P

Create plots of flexural zone

--verbose, -V

Output information about each created file

--mode, -M

Permission mode of directories and files created

References

[Brunt2010]

    1. Brunt, H. A. Fricker, L. Padman, T. A. Scambos, and S. O’Neel, “Mapping the grounding zone of the Ross Ice Shelf, Antarctica, using ICESat laser altimetry”, Annals of Glaciology, 51(55), 71–79, (2010). doi: 10.3189/172756410791392790

[Fricker2006]

    1. Fricker and L. Padman, “Ice shelf grounding zone structure from ICESat laser altimetry”, Geophysical Research Letters, 33(15), L15502, (2006). doi: 10.1029/2006GL02690

[Fricker2009]

    1. Fricker, R. Coleman, L. Padman, T. A. Scambos, J. Bohlander, and K. M. Brunt, “Mapping the grounding zone of the Amery Ice Shelf, East Antarctica using InSAR, MODIS and ICESat”, Antarctic Science, 21(5), 515–532, (2009). doi: 10.1017/S095410200999023X