Preprocessing Data by Realm
The e3sm_to_cmip
package can operate on variables in four realms: atmosphere, land, ocean, and sea-ice. Each realm requires different preprocessing steps for its related input datasets.
Atmosphere
Processing atmosphere variables requires that each of the input variables be provided in regridded
time-series files (multiple files spanning different time segments is supported), and follow the NCO naming format of VARNAME_START_END.nc
(e.g., PRECC_185001_201412.nc
).
NOTE: 3D atmosphere variables
A subset of the 3D atmosphere variables require that they be converted from the internal model vertical levels over to the "plev19"
levels. A copy of the vertical remap file can be found here
CMIP6 files requiring this vertical level change are: "hur", "hus", "ta", "ua", "va", "wap", and "zg"
.
Land
Similarly to the atmospheric variables, land variables must be provided as regridded time-series files in the NCO naming format.
MPAS ocean
MPAS Ocean variables are regridded at run time, so they don’t require preprocessing. These files should all be present in the input directory. Data required for ocean processing are as follows:
mpaso.hist.am.timeSeriesStatsMonthly
mpaso_in or mpas-o_in
one mpaso restart file
MPAS sea-ice
MPAS sea-ice variables are regridded at run time, and they don’t preprocessing. These files should all be present in the input directory. Data required for ocean processing are as follows:
mpascice.hist.am.timeSeriesStatsMonthly
ormpassi.hist.am.timeSeriesStatsMonthly
mpassi_in or mpas-cice_in
one mpassi or mpascice restart file