[MITgcm-support] ptracers?

[Stephanie Dutkiewicz]

Van Thinh -

There is a pkg/dic which is a module for looking at
carbon dioxide and oxygen being mixed into the ocean
(and the biological redistriution of these tracers
in the water column - so has a phosphorus cycle as well).

There is a subroutine o2_surfforcing.F that might be helpful
to you - you could modify this for your work; or just use
the whole dic pkg - that might be even easier... I imagine
it isn;t too different for a lake? (although some of
the coefficients might have a problem with fresh water...
will have to look into that)

steph

ps. take a look - andI will be very happy to answer any
other questions you have

On Fri, 15 Feb 2008, Van Thinh Nguyen wrote:

>
> Hi Stephanie,
>
> May I bother you with another question?
>
> I would like to calculate how much a tracer (say Oxygen) will be mixing from 
> the air in to the lake, do I need any specific boundary condition at the free 
> surface?
>
> Thanks a lot.
>
>
> Van Thinh
>
>
>
> On Thu, 14 Feb 2008, Stephanie Dutkiewicz wrote:
>
>> 
>> Van Thinh -
>> 
>> In data.ptracers you can set the file for the initial fields for the 
>> tracers with
>> PTRACERS_initialFile(*)
>> where * is the tracer number.
>> 
>> If PTRACERS_Iter0 (set in data.ptracers) is equal to nIter0 (set in
>> data) then the model will automatically read in the initial tracer
>> values from the files you've set by PTRACERS_initialFile
>> 
>> If nIter0>PTRACERS_Iter0 then it will read the tracer fields from
>> a pickup.
>> 
>> steph
>> 
>> On Thu, 14 Feb 2008, Van Thinh Nguyen wrote:
>> 
>>> Hi,
>>> 
>>> I would like to simulate some tracers (DOP, O2, DOP) mixing in a lake. I 
>>> did check in verification/dic_example & cfc_example. However, in these 
>>> examples all tracers are initilized by pickup from previous run, I am not 
>>> sure how can I initialize my tracers? (it's maybe the same way as U, V ?)
>>> 
>>> Can someone give me a hint?
>>> 
>>> Thanks a lot,
>>> 
>>> Van Thinh
>>> 
>>> 
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