[MITgcm-support] pkg for spatially variable vertical diffusivity

[Patrick Heimbach]

Hi Madeline,

I suspect your question is more involved, but if, for a start, you just want to prescribe a spatially varying (time-mean) mixing field, all you need to do is:

1. compile model with
#define ALLOW_3D_DIFFKR
(in header file CPP_OPTIONS.h)

2. provide a 3-D mixing array: this file is read in ini_mixing.F
and its filename is set in runtime parameter file data:
in NAMELIST block PARM05 set
 diffKrFile=‘myfilename’,

An example is in
verification/cpl_atm2d+ocn/input_ocn/data

Of course, things will get more involved once you plan to compute vertical mixing with your own scheme.

Cheers
-Patrick

On Jul 24, 2014, at 9:45 AM, Madeline Miller <madelinemiller at fas.harvard.edu> wrote:

> Hi folks,
> 
> I'd like to run an experiment with spatially variable (fixed in time to start) vertical diffusion. As far as I can tell, this will require that I write a new pkg modeled after the various vertical mixing packages (kpp, ggl90, my82, pp80...). 
> 
> Am I right that I need to write new code, or is there already a way to read in vertical diffusivity from a file? 
> 
> Best,
> 
> Madeline
> _______________________________________________
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> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support


---
Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
MIT | EAPS 54-1420 | 77 Massachusetts Ave | Cambridge MA 02139 USA
FON +1-617-253-5259 | FAX +1-617-253-4464 | SKYPE patrick.heimbach

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