[MITgcm-support] change ptracers surface BC during runtime

[Matthew Mazloff]

Hi Yilang

The sea ice can take up tracer when formed and release when melted. This is turned on with
define ALLOW_SITRACER in SEAICE_OPTIONS.h

You will likely want to customize seaice_tracer_phys.F
to tell it which tracer to take up and what fraction should be taken up vs rejected. 

If this is what you are interested in doing I can give more details about customizing seaice_tracer_phys.F 

Matt


> On Apr 2, 2020, at 8:36 PM, Yilang Xu <yxu at whoi.edu> wrote:
> 
> Hi everyone, 
>  
> I have been using ptracers, but only with RBCS to restore the surface BC as a source. However, this only allows a fixed location for surface input. 
> I am wondering if the following is possible, potentially with/without RBCS. 
>  
> 1. Change the locations of surface source of ptracers while the code is running. The locations are based on other output. 
> 2. If the above is plausible, link the ptracers surface BC with the continuous changes of sea ice cover. 
>  
> These might need modifications in the code. My goal is to enforce ptracers=1 on the surface, when the sea ice cover percentage at that location is below a certain level. Is there any reference to it? I see some words mentioning this in gchem pkg, but I am unfamiliar with it. 
>  
> Thank you very much. 
>  
> Best,
> Yilang 
>  
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