[MITgcm-support] Bulk Force and SSS restoring

[Stefano Querin]

Hi Amato,

just a few ideas...

Have you ever tried to use the EXF package for your simulations? It  
should be more complete and flexible than the BULK_FORCE package. You  
can also restore SSS to prescribed values with it.

I don't think that the computation of freshwater fluxes using runoff  
and precipitation input files makes the model run that slow... (but  
I'm just relying on my experience, I never made any test regarding  
this). On the contrary, if you meant that the creation and handling  
(offline) of runoff and precip files is somehow cumbersome and slow,  
then SSS restoring should be a more desirable choice.

Anyway, the EXF package has many available options.

Hope this helps...

Cheers!

S.



On 16 Feb 2010, at 19:50:23, Amato Evan wrote:

> Hello Everyone,
>
> I am trying to estimate the effect of surface forcing by volcanic- 
> aerosols on tropical SST. To do this I have a 1x1 degree model setup  
> w/23 vertical levels. After spining up the model for 130 years using  
> NCEP and WOA data (and SSS restoring), I would like to "turn-on" the  
> BULK_FORCE package in order to change downward lw & sw fluxes in  
> accordance with volcanic aerosol surface forcing (something I  
> calculate offline w/satellite obs. and an RT model).
>
> I am giving the BULK_FORCE pkg wind stress values (calcWindStress  
> = .FALSE.), but I would like to run w/surface salinity restoring,  
> and not have the model calculate freshwater fluxes using runoff and  
> precip input files. My motivation is just to make the model runs  
> complete more quickly. What I can't determine from the documentation  
> and source code is if I leave:
>
> RainFile= ' ',
> RunoffFile= ' ',
> EmPFile= ' ',
>
> in data.blk, will bulk_force just restore to surface salinity on the  
> time scales I define in "data"? If anyone has experience with this,  
> I would really appreciate input. Also, the contents of build/,  
> code/, and input/ for my setup can be found here:
>
> http://trane.evsc.virginia.edu/mitgcm/
>
> If anyone is so inclined to look them over.
>
> Thanks!
>
> Sincerely,
> Amato
>
> ---
> Amato Evan
> Asst. Professor
> Dept. of Environmental Sciences
> University of Virginia
> 434.243.7711
> aevan at virginia.edu
> http://trane.evsc.virginia.edu
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support
>
> Email secured by **CeSIT** Check Point gateway