# Christian Dieterich Wed Mar 22 09:27:45 CET 2017

This is the README file for the model output of the coupled, regional
model run RCA4-NEMO-ECHAM5 SRES A1B3. This run is part of a small
ensemble of coupled model runs that have been used during the KLIWAS
project. The ensemble consists of three coupled, regional models that
have been run to downscale the historical period and the scenario period
of the run ECHAM5/MPIOM SRES 20C3 A1B3.

The present model run is called ./rca4_nemo/run_470. It was started on
1961-01-01 00:00:00 from initial conditions and ran until 2100-01-01
00:00:00. The period from 1961-01-01 00:00:00 to 2000-01-01 00:00:00 of
run ./rca4_nemo/run_470 represents the historical period 20C3 of the
downscaled ECHAM5/MPIOM 20C3 A1B3 scenario.

The output files are written in netCDF-4 classic format (nccopy -k 4)
and are deflated with compression level 1 (nccopy -d 1). The files are
conformable to CF-1.4 (CF-1.6) conventions (http://cfconventions.org).
The variable names and their standard names follow the suggestions in
the lists

http://cfconventions.org/Data/cf-standard-names/41/build/cf-standard-name-table.html
http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.pdf

The naming of the files follows the CMIP5 conventions.

There are certain exceptions:

- tos and thetao units are in degrees Celsius (instead of degrees Kelvin).
- sos and so units are in g/kg (instead of psu, compliant to CF-1.6).
- mlotst could be interpreted as defined by sigma T, but it is defined
  by sigma Theta.
- prlr, prcr, prsnr do not exist as CF compliant variables or variable
  names. RCA4 outputs precipitation rates (mm/output interval). These
  have been aggregated to (mm/month).

The list of variables, together with variable ids, names, units and so
on are found in the files mapping.*.txt. These have been used by the
./scripts/standarize.*.sh to map the model output onto a standardized
form of the variables as described in the documents mentioned above.