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

[Jody Klymak]

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> 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 <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 <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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