[MITgcm-devel] changes to layers output

[Ryan Abernathey]

Ok, I'm convinced. Forget it. :)

On Tue, Oct 28, 2014 at 4:47 PM, Jean-Michel Campin <jmc at ocean.mit.edu>
wrote:

> Hi Ryan,
>
> I am not convinced this change is needed:
> 1) it does not seems too bad for me to have to multiply by DYG or DXG
>  to get the volume tranport: it's already what I do when computing
>  eulerian tranport from UVELMASS,VVEMASS or bolus transport from
>  GM_PsiX and GM_PsiY.
>  On the other hand, if I want to compute, from the layer pkg diagnostics,
>   u'h' = < uh > - <u> <h>
>  I would now have to divide by DYG (or DXG) ?
> 2) Changing the definition of a diagnostics is potentially a cause
>  of problems. So, if we can avoid this, it would be better.
>  Alternatively, we can change also the diagnostics names, but not so sure
>  it's what everybody wants. And finally, there is also the question of
>  what to do with output from pkg/timeave: keep them unchanged and loose
>  the link with corresponding diagnostics or also change them (with no way
>  to indicate that the content of the file has changed).
>
> Cheers,
> Jean-Michel
>
> On Tue, Oct 28, 2014 at 11:01:30AM -0400, Ryan Abernathey wrote:
> > Hi Folks,
> >
> > This is a message for those of you who use the layers package.
> >
> > I would like to change the output of layers to make it easier to compute
> > volume transports. Currently we output the thickness-weighted transport
> as,
> > e.g.
> > 223 |LaVH1TH | 42 |   222 |VV      MX|m.m/s           |Layer Integrated
> > merid. Transport (VH, m^2/s)
> > I would like to modify UH and VH by multiplying them with DYG and DXG,
> > giving units of m^3 / s. Currently this has to be done as a
> post-processing
> > step, but I think it would be better to do it online.
> >
> > If you are currently using these fields in your diagnostics, this change
> > would probably break your analysis routines.
> >
> > Please let me know if you object to the idea.
> >
> > -Ryan
>
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> > MITgcm-devel at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-devel
>
>
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