[MITgcm-support] [EXTERNAL] How to start from given initial conditions without restarting the simulation

[Jody Klymak]

Hi Igor, 

That would be my guess, but I’ve not checked either by running or tracing the code.

Cheers,   Jody



> On 3 Apr 2020, at 05:00, Shevchenko, Igor <i.shevchenko at imperial.ac.uk> wrote:
> 
> Hi Jody,
> 
> Thank you for your suggestion.
> Do you mean that setting up baseTime into, say 15, will make all necessary interpolations of the atmospheric forcing and open boundary conditions to match this particular moment in time?
> 
> Best regards,
> Igor
> 
> ________________________________________
> From: MITgcm-support <mitgcm-support-bounces at mitgcm.org> on behalf of Jody Klymak <jklymak at uvic.ca>
> Sent: 02 April 2020 20:39
> To: mitgcm-support at mitgcm.org
> Subject: Re: [MITgcm-support] [EXTERNAL] How to start from given initial conditions without restarting the simulation
> 
> Hi Igor,
> 
> Not 100% sure, but I *think* you can set baseTime to be 0, 5, 10, 15 in each of your new simulations, and then you can use the same forcing files for each of your runs?
> 
> Cheers,   Jody
> 
> On Apr 2, 2020, at  11:15 AM, Shevchenko, Igor <i.shevchenko at imperial.ac.uk<mailto:i.shevchenko at imperial.ac.uk>> wrote:
> 
> That's right, I can do it. In fact, this is what I do to start the model from given initial conditions.
> What I can't figure out, where there is a possability to specify, say 4 initial conditions, and pick them up at different moments in time (say t=0, 5, 10, 15 as in the example below) without stopping the simulation?
> 
> &PARM05
> bathyFile       = 'bathy.bin',
> hydrogThetaFile = 'Theta.0',
> hydrogSaltFile  = 'Salt.0',
> uVelInitFile    = 'Uvel.0',
> vVelInitFile    = 'Vvel.0',
> pSurfInitFile   = 'Eta.0',
> 
> bathyFile       = 'bathy.bin',
> hydrogThetaFile = 'Theta.5',
> hydrogSaltFile  = 'Salt.5',
> uVelInitFile    = 'Uvel.5,
> vVelInitFile    = 'Vvel.5',
> pSurfInitFile   = 'Eta.5',
> 
> bathyFile       = 'bathy.bin',
> hydrogThetaFile = 'Theta.10',
> hydrogSaltFile  = 'Salt.10',
> uVelInitFile    = 'Uvel.10,
> vVelInitFile    = 'Vvel.10',
> pSurfInitFile   = 'Eta.10',
> 
> bathyFile       = 'bathy.bin',
> hydrogThetaFile = 'Theta.15',
> hydrogSaltFile  = 'Salt.15',
> uVelInitFile    = 'Uvel.15,
> vVelInitFile    = 'Vvel.15',
> pSurfInitFile   = 'Eta.15',
> 
> 
> ________________________________________
> From: MITgcm-support <mitgcm-support-bounces at mitgcm.org<mailto:mitgcm-support-bounces at mitgcm.org>> on behalf of Dimitris Menemenlis <dmenemenlis at gmail.com<mailto:dmenemenlis at gmail.com>>
> Sent: 02 April 2020 19:03
> To: MITgcm Support
> Subject: Re: [MITgcm-support] [EXTERNAL] How to start from given initial conditions without restarting the simulation
> 
> This email from dmenemenlis at gmail.com<mailto:dmenemenlis at gmail.com> originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address.
> 
> 
> 
> you can specify these fields in data PARM05 directly, e.g.,
> 
> # Input datasets
> &PARM05
> bathyFile       = 'bathy.bin',
> hydrogThetaFile = 'Theta.0005184000',
> hydrogSaltFile  = 'Salt.0005184000',
> uVelInitFile    = 'Uvel.0005184000',
> vVelInitFile    = 'Vvel.0005184000',
> pSurfInitFile   = 'Eta.0005184000',
> /
> 
> then MITgcm will initialize the other fields automatically
> 
> On Apr 2, 2020, at 10:50 AM, Shevchenko, Igor <i.shevchenko at imperial.ac.uk<mailto:i.shevchenko at imperial.ac.uk><mailto:i.shevchenko at imperial.ac.uk>> wrote:
> 
> Surely, I can do it, but the problem is that the new initial condition is just a set of fields for U, V, T, S, and Eta, while the pickup file requires much more than that.
> 
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--
Jody Klymak    
http://web.uvic.ca/~jklymak/