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

[Dimitris Menemenlis]

not that I know of.  You’d have to jerry-rig the code.  Easier and safer to stop and restart.

> On Apr 2, 2020, at 11:15 AM, Shevchenko, Igor <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> on behalf of Dimitris Menemenlis <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
> 
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> 
> 
> 
> 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>> 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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