[MITgcm-support] pkg/dic options ?

[Stephanie Dutkiewicz]

Alexandre -

In the default pkg/dic particulate inorganic carbon sinks and dissolves 
with a characteristic timescale. CAR_DISS was some code written a while 
ago where PIC only dissolved below the saturation horizon (this code used 
in Friis et al, GBC, 2006). This is more mechanistically correct.
However this piece of code has not been maintained - so there I'm not sure 
if it still works.

I haven't used LIGHT_CHL -- but guess it alters the light field in the 
water column to account for the absorption by phytoplankton.

  steph

On Mon, 31 Aug 2015, Alexandre Pohl wrote:

> Hi all,
>
> Thank you David for your helpful answer regarding the DIC_NO_NEG and ALLOW_OLD_VIRTUALFLUX options in your coupled runs.
>
> Has anyone any feedback about the other two options, CAR_DISS (i.e., should calcite dissolution happen even above the calcite saturation horizon (omega =1) ?) and LIGHT_CHL (self-shading effect by phytoplankton) ?
>
> Thanks,
> Alexandre
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