[MITgcm-support] EmPmRfile, EmPmR

[Martin Losch]

Patrick,
there is a flag called "useRealFreshWaterFlux", that makes the model  
add volume to the topmost grid cell. I recommend to use it along with  
exactConserv = .true. (you need to have the corresponding CPP flag  
compiled with it). That should prevent your surface cells from  
getting negative salinities.

If you feel really adventurous turn on the non-linear free surface  
with r*-coordinates (global_ocean.cs32x15 has an example of this),  
but that's not really required for the model use actual freshwater  
flux (just makes is even more "physical" and stable for the kind of  
forcing that you are trying to apply).

Martin

PS. the EmPmR variable is used always (with or without seaice,  
virtual salt flux or not).

On 22 Mar 2007, at 15:17, Patrick Rosendahl wrote:

> Hi!
>
> I want to simulate rain that actually increases the waterlevel. If  
> I understand all the rain implementations in mitgcm, the rain is  
> translated into a salt-flux. so after a while I will have negative  
> salt values in the upper layer...
>
> model configuration is a closed water bassin that is partially  
> rained on. non-hs.
>
> I do not want to diagnose the aim package.
>
> best,
> Patrick
>
> Andrea Molod wrote:
>> hi patrick,
>> can you be a little more specific about what you mean?
>> what kind of model configuration, and what do you mean
>> by 'do rain'? a diagnostic for it in an aim package run?
>> something else? then maybe we can answer.
>> andrea
>> ----------------------------------------------------------------
>> Andrea M. Molod, PhD.
>> Department of Earth, Atmospheric & Planetary Sciences
>> MIT
>> Tel: (617) 253-5458, Email: amolod at mit.edu
>> WWW:http://paoc.mit.edu/paoc/people/person.asp? 
>> position=Postdoc&who=molod
>> ----------------------------------------------------------------
>> On Mon, 12 Feb 2007, Patrick Rosendahl wrote:
>>> Hello all,
>>>
>>> the variable EmPmR is only used in the seaice and the  
>>> aim_compon_interf package, the web-sourcecode tells me.
>>>
>>> What is the best way to do "rain" (neglecting the vertical  
>>> velocities at the moment)?
>>>
>>> Best regards,
>>> Patrick Rosendahl
>>> _______________________________________________
>>> MITgcm-support mailing list
>>> MITgcm-support at mitgcm.org
>>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>>>
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