Alpine ice sheet glacial cycle simulations aggregated variables

These data contain time-integrated and otherwise time-reduced glacier model output variables.

Reference:

• Seguinot, J., Ivy-Ochs, S., Jouvet, G., Huss, M., Funk, M., and Preusser, F.: Modelling last glacial cycle ice dynamics in the Alps, The Cryosphere, 12, 3265-3285, doi:10.5194/tc-12-3265-2018, 2018.

File names:

alpcyc.{1km|2km}.{epic|grip|md01}.{cp|pp}.agg.nc

• Horizontal resolution:
  • 1km: 1 km horizontal resolution
  • 2km: 2 km horizontal resolution
• Temperature forcing:
  • epic: EPICA ice core temperature forcing
  • grip: GRIP ice core temperature forcing
  • md01: MD01-2444 core temperature forcing
• Precipitation forcing:
  • cp: constant precipitation
  • pp: palaeo-precipitation reduction

Data format:

The data use compressed netCDF format. For quick inspection I recommend ncview. Conversion to GeoTIFF (and other GIS formats) can be achieved with e.g. GDAL::

gdal_translate NETCDF:filename.nc:variable filename.variable.tif

The list of variables (subdatasets) can be obtained from ncdump or gdalinfo. To convert all variables to separate files use:

gdalinfo $filename | grep NETCDF | cut -d '=' -f 2 |
    egrep -v '(lat|lon|time_bounds)' | while read sub
do gdal_translate $sub ${filename%.nc}.${sub##*:}.tif
done

Variable long names, units, PISM configuration parametres and additional information are contained within the netCDF metadata. Also see continuous variables.

Changelog:

• Version 2:
  • Add age coordinate in kiloyears (ka) before present.
  • Use ka units for covertime, deglacage and maxthkage.
• Version 1:
  • Initial version