[MITgcm-devel] vertical mixing

[Martin Losch]

What's the most requested feature?

I am afraid I don't understand fully what you would like to happen to 
the diffusivities in detail, (one 3D field for each proccess, that is 
one for KPP one for implicit diffusion one for each propective other 
parameterization), well the two I'm going to implement only have one 
diffusivity anyway.

Martin

On Aug 30, 2004, at 2:48 PM, Alistair Adcroft wrote:

> Martin,
>
> Go ahead but...
>
> I had wanted to change the way we do diffusivity (vertical+horizontal) 
> as a
> whole.
>
> We currently have a 1/2/3D diffusivity per variable which is 
> unmanagable and
> impractical with multiple tracers.
>
> I wanted to have a diffusivity per process described by a 
> non-dimensional
> diffusivity (profile or field) and then a dimensional scalar per
> tracer/process. This gives a matrix of possibilities for configuration 
> and
> reduces memory. The diffusivities would be added up at the two places 
> where
> we need them and only then.
>
> It would be most convenient if this switch happened sooner rather than 
> later
> (ie. Before more processes get added). Since I'm out of it (travelling 
> for
> two weeks and then implementing my best ideas in MOM for a few years) 
> are
> you up to the task?
>
> Otherwise, don't let me stop you adding the second most requested 
> feature.
>
> A.
> --
> Dr Alistair Adcroft            http://www.mit.edu/~adcroft
> MIT Climate Modeling Initiative        tel: (617) 253-5938
> EAPS 54-1624,  77 Massachusetts Ave,  Cambridge,  MA,  USA
>
> -----Original Message-----
> From: mitgcm-devel-bounces at mitgcm.org
> [mailto:mitgcm-devel-bounces at mitgcm.org] On Behalf Of Martin Losch
> Sent: Monday, August 30, 2004 8:30 AM
> To: MITgcm-devel at mitgcm.org
> Subject: [MITgcm-devel] vertical mixing
>
>
> Hi there,
>
> I am going to implement a few vertical mixing schemes for a small
> project on vertical mixing. In case you are interested I would like to
> include them into the repository (once I am done, this may take a
> while). The schemes include:
> Pacanowski&Philander(1981) PP81
> Mellor&Yamada MY80
> Romea&Paluskiewicz (plume parameterisation) RP
> To save me work in the future, I would like start my coding in such a
> way that you all are happy with it later on.
> PP81 and MY80 behave like KPP and probably should be called from
> do_oceanic_phys and calc_diffusivities. RP replaces the call to
> convective adjustment and is a little more tricky. Each of the three
> schemes are not that much new code, so it may or may not be useful to
> add another package for each. Does anyone have a good suggestion for
> this? Or should I just go ahead and put them into separate packages?
>
> Martin
>
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