Ice Model Input Data Files: Only input files that are used by current versions of the CCSM sea ice component model on supported grids are in this directory. Backups of these files and copies of outdated files can be found on the NCAR MSS at /CCSM/inputdata/ice/csim4/$GRID The MSS directory was created on 05 Feb 02, any files added to or deleted from this directory should be saved on mss. The command is: mswrite -t 730 local_filename /CCSM/inputdata/ice/csim4/$GRID/local_filename There is a script in this directory called write_to_mss that will write all of the csim4 input files to the MSS. All remapping or interpolation should be done from the original file, if possible: data_1x1.nc -> data_ice_grid1.nc data_1x1.nc -> data_ice_grid2.nc not data_1x1.nc -> data_ice_grid1.nc -> data_ice_grid2.nc Code for makeing the scrip remapping files is in: /home/dataproc/schramm/scrip1.4 The following grids are supported: gx1v3, gx3, and gx3v4 . gx3v4 is the grid for the paleo version. 23 Jan 04 gx3v5 is supported for the paleo version and replaces gx3v4 ------------------------------------------------------------------------- AMIP* files: Ice conc. and SST data used for prescribed ice model. ORIGINAL FILE:/SCHRAMM/AMIP/pcmdi_sst_ccm_bc1x1_1976-1996.nc 010817: First 2 years are climatological data, 1978 and on is observed monthly data. 020801: Took file AMIP_bcgx3_1976-1996_011030.nc and replaced land mask with that of gx3v4 (open Hudson Bay) to make AMIP_bcgx3_1976-1996_011030.nc. NOTE: AMIP files made in 2004 and after are made using a different method. Previously, ocean points were mapped using the scrip weights, then the land points and any missing data points were filled in using nearest neighbor fill. Now, the entire field, land and ocean points, are remapped using the scrip remapping weights. 040213: Remapped fields from pcmdi_sst_ccm_bc1x1_1976-1996.nc to new gx3v5 grid, using: /home/dataproc/schramm/scrip1.4/idl_tools/1x1d_to_gx3v5_amip.run ------------------------------------------------------------------------- domain* files: Used only in pre-csim4_1_0 versions. ------------------------------------------------------------------------- global_* files: Used in csim4_1_0 and beyond. Contain grid and land mask information. These files can be copied from the ocean model input directory. The following files were added on 18 June 2002 for the paleo "version" of the model: global_gx3v4.grid a copy of the gx3 global_gx3.grid file global_gx3v4.kmt (only modified file for this grid, others are copies of gx3) The iced file is a copy of the gx3 version as is the global*.grid. The following files were added on 23 Jan 2004 for the paleo version of the model: global_gx3v5.grid This is /fs/cgd/csm/inputdata/ocn/pop/gx3v5/grid/horiz_grid_20030806.ieeer8 global_gx3v5.kmt This is /fs/cgd/csm/inputdata/ocn/pop/gx3v5/grid/topography_20030806.ieeei4 Keith says to use the topography file, since the region_mask file contains values of -1 to denote marginal seas. 04 April 2006 - New grid files for gx1v4 to correspond to ocean domain changes Original ocean files in /fs/cgd/csm/inputdata/ocn/pop/gx1v4 25 April 2006 - The topography (kmt) file was updated at one point in the ocean directory but never changed in the ice directory. global_gx3v5_20040323.kmt This is /fs/cgd/csm/inputdata/ocn/pop/gx3v5/grid/topography_20040323.ieeei4 ------------------------------------------------------------------------- iced.00010101* files: Restart files that are used for initial conditions. iced.0001-01-01* files: New file name convevtion iced.0001-01-01.gx3v4: a copy of the iced*.gx3 file iced.0001-01-01*.20lay files: Include info for 4 layers in each ice category, added csim4_8_8 iced.0001-01-01.gx3v5.040213: Added for the paleo version of the model 23 Jan 04 This file contains 20 layers, 4 in each category. It was created from a restart file with 16 layers: /YEAGER/csm/gx3v5.013/ice/rest/gx3v5.013.csim.r.0063-01-01-00000 using: /fs/cgd/home0/schramm/csim4_maint/read_restart/ more_layers_restart.F to add more layers and change istep0 and times at the top of the file to 0 It looks pretty similar to the fields in the gx3v4 initial restart file. ------------------------------------------------------------------------- pop_frc_* files: Forcing for ocean mixed layer model. These files come from ocean history files from a fully coupled or ice/ocean run. ORIGINAL FILE: /SCHRAMM/OCN_FORCING/pop_all_var_gx3.nc // global attributes: :title = "CSM Ocean monthly forcing data" ; :source = "4 year average of yrs 101-4 of POP ocean model run G03p-3.12" ; :history = ",File Created: 2000-10-30 10:29:32" ; :conventions = "CSM NetCDF Conventions Version 0.0" ; :comment1 = "This data is on a displaced pole grid (x3\')." ; :comment2 = "First latitude point is bogus and has been changed." ; 010815: Extracted data necessary fields from original data file for gx3 grid. This should be the same as the original dataset. Interpolated these fields to gx1v3 grid. Both tasks used file: /fs/cgd/home0/schramm/ncl/interp/ocn_frc/gx3_to_gx1v3.ncl. 020730: Took data from pop_frc_gx3_010815.nc, new gx3v4 land mask from a scrip file, and put both in this file. See NOTE under AMIP files for change in remapping made in files created after this point. 040212: Remapped fields from pop_frc_gx3v4_020730.nc to new gx3v5 grid, using: /home/dataproc/schramm/scrip1.4/idl_tools/gx3v4_to_gx3v5_pop_frc.run These files come from ocean history files from a fully coupled or ice/ocean run. ------------------------------------------------------------------------- sst_clim_hurrell* files: Forcing data for the F runs, replaces AMIP data.