Control of Output

As noted above, the frequency of mean and instantaneous output is controlled by the test.sh namelist variables noout, ntout and ntouti, respectively. Thus, if you do not want either q.out or qmean.out output, set noout, ntouti or ntout, respectively, to a very high value.

The user can make additional adjustments as to what is output by making code changes to output.f. Some of the adjustments possible include:

• To add a new variable for output:
  • To output a mean value, call subroutine oacc in varmean.
  • To output an instantaneous value, call subroutine outpi in subroutine outpinst.
• To skip a variable for output:

  Simply comment out the corresponding call to subroutine outpi in outpinst and/or oacc in varmean; one can also comment out in bulk the call to outpinst/outpmean in outpall, so as not to output at all. One can also exercise control at an even higher level in the main program (e.g. subroutine driver), or by controlling the value of ntout (see below).

• To control how often and where to output a variable:

  By default, output is done every ntout days to the three files described above. However, the code allows the user to specify a different output frequency and unit directly for any particular variable in subroutine outpinst or outpmean by simply using different argument values in calling subroutines outpi and outpm. Variables ntout and/or ntouti can also be specified as a user-control parameter in driver.in by editing the execution shell scripts. Note: The minimum value for ntout is one day, so if you need to output more often than a day, you have to call the output routines from within the atmosphere-land coupling loop in subroutine qtcm.

Section  contains additional information regarding how QTCM1 calculates mean variables for output.