NetCDF Output

The NetCDF output routines are in the files output_nc.F and ncout.F90. The makefile makefile_nc should be used compile qtcm with these routines. Parts of the NetCDF output routines are written in Fortran 90 so a Fortran 90 compiler is needed. By default the NetCDF output files are located in ../proc. The names of the files are build out of the date and time of the model run The file names are of the form qi_YYMMDD_HHMM.nc and qm_YYMMDD_HHMM.nc for instantaneous and mean fields, respectively. (Example: a run on June 17 1797 at 5:31 am would produce two files qi_970617_0531.nc and qm_970617_0531.nc.)

The output files contain the same data as the GrADS binary file plus some information about used the model input parameters. The files obey the COARDS convention (see http://ferret.wrc.noaa.gov/noaa_coop/coop_cdf_profile.html) and may be opened using the command ``sdfopen'' (see http://www.cdc.noaa.gov/ hoop/grads.html) within GrADS.

To add a variable to the NetCDF output the user has to

• make sure that the variable is globally accessible. The arrays arr1, , arr4 may be use for this purpose.
• add a call of nc_defvar to subroutine nc_init in nc_out.F90 to define the new variable..
• add a call of nc_write_i (nc_write_m) for instantaneous (mean) values to write the data to file.
• for mean values output add a call of oacc in varmean.