The following is metadata information for an archive of model output and code
for an ice-sheet numerical model associated with the paper:

  Pollard, D., R.M. DeConto and R.B. Alley, 2018, A continuum model (PSUMEL1) 
  of ice melange and its role during retreat of the Antarctic Ice Sheet. 
  Geoscientific Model Development, in review. 

Throughout, files fort.92_*.nc are Netcdf-format files with 2-D maps of selected
variables at regular time intervals through a run. The main variables are:
  alatd, alond    latitudes and longitudes at grid centers.
  h               ice thickness.
  hs              surface elevation (ice, land, or ocean).
  hb              bedrock elevation.
  utop, vtop      surface ice velocities (in x,y directions
                  of the polar stereographic grid).
  maskwater       0 if grounded ice or land, 1 if floating ice or/ocean.
  alatd, alond    grid cell-center latitude, longitude, for the polar 
                  stereographic grid.
  time = years BP (negative) or AP (positive).

fort.22* and fort.280* are tabular ascii files with time series of overall 
quantities. load.* are gnuplot plotting scripts.

The files and directories in the archive are:

README_PDA2018.txt
------------------
This file

Test2d (subdirectory)
---------------------
Contains output for idealized 2-D channel simulations in Figs. 1, 2.

  fort.92_a10.nc   for Fig. 1a and 2b
  fort.92_b10.nc   for Fig. 1b
  fort.92_c10.nc   for Fig. 1c
  fort.92_d10.nc   for Fig. 1d
  fort.92_a20.nc   for Fig. 2a
  fort.92_a5.nc    for Fig. 2c
  fort.92_a2.nc    for Fig. 2d

Jakobshavn (subdirectory)
-------------------------
Contains output for Jakobshavn fjord, Greenland, simulations in Figs. 3, 4, 5.

  fort.92_E6_F.1_P5_H30.nc   for Fig. 3a
  fort.92_E4_F.1_P10_H60.nc  for Fig. 3b
  fort.92_E1_F.1_P1_H150.nc  for Fig. 3c
  fort.92_E8_F.1_P1_H10.nc   for Fig. 3d
  meljanal.tab               for Fig. 4 (values shown as colored squares)
  tar_fort.660               for Fig. 5 (tar file with fort.660_* profiles)
  loaf.meljens               for Fig. 5 (gnuplot script)

Antarctic (subdirectory)
------------------------
Contains output for Antarctic Ice Sheet simulations in Figs. 6, 7, 8, 9, 10. 

  fort.92_ant40a.nc                for Fig. 6 (top and middle rows)
  fort.92_ant40nomel.nc            for Fig. 6 (bottom row)
  fort.92_ant40d.nc                for Fig. 7 
  fort.22_*, fort.280_*            for Fig. 8
  load.ant40                       for Fig. 8 (gnuplot script)
  fort.92_wilkes20.nc              for Fig. 9
  fort.92_ant40nomechslow.nc       for Fig. 10 (top and middle rows)
  fort.92_ant40nomechnomelslow.nc  for Fig. 10 (bottom row)

Code_122617
-----------
Fortran code source (*.F) and include (*.h) files for the coupled ice-sheet 
and melange model.

Make
----
make files to compile and link the model. They can use either gfortran or 
Intel Fortran (ifort) compilers. For the test2d, jakokshavn and antarctic cases
to compile and run, edits for pathnames on different machines are needed in 
the make files and comicepath.h, and additional Greenland or Antarctic 
observational dataset files are needed as inputs.

  make_eg_user            sample for an idealized channel (no edits needed)
  make_eg_for_test2d      typical idealized channel case 
  make_eg_for_jakobshavn  typical Jakobshavn case 
  make_eg_for_antarctic   typical Antarctic case

Netcdf_gfortran
---------------
Netcdf library files (libnetcdf.a and netcdf.inc) used in compiling and 
linking, with gfortran selected in the make file.

Netcdf_ifort
------------
Netcdf library files (libnetcdf.a and netcdf.inc) used in compiling and 
linking, with ifort selected in the make file.