PMIP4 ICE-6G-C ice-sheet data

• nb_lat, nb_lon = 1080, 2160 (regular 10 minutes intervals)
• latitude_values = [ -89.91667175, -89.75, -89.58334351, … 89.58333588, 89.75 , 89.91666412 ]
• longitude_values = [ 0., 0.16666667, 0.33333334, … 359.5, 359.66668701, 359.83334351 ]
• NO time axis (1 time step per file)

• 48 time steps in 48 files, from 0k to 26k BP : data every 500 years from 0k to 21k BP, then every 1000 years till 26k BP
• file names = I6_C.VM5a_10min.<time_slice>.nc
  with <time_slice> in [0, 0.5, 1, …, 20, 20.5, 21, 22, 23, 24, 25, 26]
• all the variables for the same time step are in the same file

• Topo: Topography (Point-value altitude), meters
  • on continents: surface altitude (including grounded ice sheet)
  • on ice-free oceans, and where there is floating ice (ice shelves): bathymetry
• Orog: Orography (Point-value surface altitude), meters
  • on continents: altitude (including grounded ice sheet)
  • on ice-free oceans: 0.0 (zero)
  • on ice-shelves: surface altitude
• sftlf: Point-value Landmask, %
  • values are 0 (not land) or 100 (land)
  • does not include floating ice
• sftgif: Point-value Icemask, %
  • values are 0 (not ice) or 100 (ice)
  • floating ice is included

Notes:

• Computing the sftlf-sftgif difference yields:
  • 100: where there is land without ice
  • -100: where there is floating ice-sheet
  • 0: elsewhere

Check the Download section to access the I6_C.VM5a_fwf_uniform.txt data file

Please cite all following papers:

• Describe the new Antarctic component of the model: Argus, D.F., Peltier, W.R., Drummond, R. and Moore, A.W. - The Antarctica component of postglacial rebound model ICE-6G_C (VM5a) based upon GPS positioning, exposure age dating of ice thicknesses, and relative sea level histories. Geophys. J. Int., 198, 537-563, 2014, 10.1093/gji/ggu140

• Describe the complete model: Peltier, W.R., Argus, D.F. and Drummond, R. (2015) Space geodesy constrains ice-age terminal deglaciation: The global ICE-6G_C (VM5a) model. J. Geophys. Res. Solid Earth, 120, 450-487, doi:10.1002/2014JB011176

You will find below a table with all the available data files, and their md5sum checksum (if you want to check that you download was OK, you can just type md5sum file.nc and compare the result to what is displayed in the table).

If you want to download a file, click on the ice_sheet download link and then on the file you need.