[MITgcm-support] change ptracers surface BC during runtime

[Yilang Xu]

Thank you Matt! I have not noticed this before in the seaice pkg. 

I will check seaice_tracer_phys.F to see if I have further questions. 

 

Best,

Yilang 

 

 

From: MITgcm-support <mitgcm-support-bounces at mitgcm.org> on behalf of Matthew Mazloff <mmazloff at ucsd.edu>
Reply-To: <mitgcm-support at mitgcm.org>
Date: Thursday, April 2, 2020 at 23:47
To: <mitgcm-support at mitgcm.org>
Subject: Re: [MITgcm-support] change ptracers surface BC during runtime

 

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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