[MITgcm-support] Diagnostic Statistics - Single Value Output

[Benjamin Ocampo]

Hi Martin:

Thank you for your response. I will give it a shot for modifying the code.

Cheers,
Benjamin

On Mon, Feb 22, 2016 at 1:09 AM, Martin Losch <Martin.Losch at awi.de> wrote:

> Hi Benjamin,
>
> I understand this correctly: you want to write “global” mean and standard
> deviation for individual variables, but not per (z-)layer, and not use the
> pkg/monitor output that writes to STDOUT?
> I am afraid, that’s not coded. At least there are no runtime flags in the
> diagnostics package, NAMELIST / DIAG_STATIS_PARMS / that suggest that this
> is possible.
> You’d have to modify the code, e.g. diagstats_ascii_out.F or
> diagstats_mnc_out.F, depending on your preferred output method for the
> diagnostics package, in order to customize your output.
>
> Martin
>
> > On 19 Feb 2016, at 19:32, Benjamin Ocampo <rurik at ualberta.ca> wrote:
> >
> > Hi All:
> >
> > I am trying to work with the diagnostic package and
> > I am able to successfully use the diagnostic statistics
> > file to output values at each individual z-grid point using
> > the code below:
> >
> >
> >  &DIAGNOSTICS_LIST
> > #  Empty
> >  &
> >
> > # Parameter for Diagnostics of per level statistics:
> > # #-----------------
> > # # for each output-stream:
> > # #  stat_fname(n) : prefix of the output file name (only 8.c long) for
> outp.stream n
> > # #  stat_freq(n):< 0 : write snap-shot output every |stat_freq| seconds
> > # #               > 0 : write time-average output every stat_freq seconds
> > # #  stat_phase(n)    : write at time = stat_phase + multiple of
> |stat_freq|
> > # #  stat_region(:,n) : list of "regions" (default: 1 region only=global)
> > # #  stat_fields(:,n) : list of diagnostics fields (8.c) (see
> "available_diagnostics.log"
> > # #                 file for the list of all available diag. in this
> particular config)
> > # #-----------------
> >  &DIAG_STATIS_PARMS
> > #  - an example just to check the agreement with MONITOR output:
> >   stat_fields(1,1)= 'UVEL    ',
> >    stat_fname(1)= 'dynuvel',
> >    stat_freq(1)= 500.,
> >    stat_phase(1)= 0.,
> >   stat_fields(1,2)= 'VVEL    ',
> >    stat_fname(2)= 'dynvvel',
> >    stat_freq(2)= 500.,
> >    stat_phase(2)= 0.,
> >   stat_fields(1,3)= 'WVEL    ',
> >    stat_fname(3)= 'dynwvel',
> >    stat_freq(3)= 500.,
> >    stat_phase(3)= 0.,
> >   stat_fields(1,4)= 'THETA    ',
> >    stat_fname(4)= 'dynvtheta',
> >    stat_freq(4)= 500.,
> >    stat_phase(4)= 0.,
> >  &
> >
> >
> > My question is:
> >
> > Is there a way to reduce the output of a variable to say
> > two per snapshot (mean and standard deviation) without
> > using the STDOUT file (as it contains too much information
> > and is too large)?
> >
> > For example, if I sum all theta values in all (x,y,z) spatial
> > grid-points and divide it by Nx*Ny*Nr for a particular
> > snapshot, I get a spatially averaged theta value of
> > say 50C and some standard deviation associated with it
> > (though for the purposes of my research, I can ignore it
> > for the time being). Am I able to output a single spatially
> > averaged diagnostic value for each snapshot without
> > outputting statistics for each z-grid points for all Nr points
> > either by using the diagnostic package or by using another
> > method during the execution of the code?
> >
> > Cheers,
> > Benjamin
> >
> >
> > _______________________________________________
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> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
>
>
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