Ocean Modeling Discussion

ROMS/TOMS

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 Post subject: Details for floats
PostPosted: Sat Aug 11, 2012 2:25 pm 
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Joined: Fri Jan 08, 2010 7:22 pm
Posts: 139
Location: Theiss Research
I am looking for details of ROMS' floats, I would like to put together a brief description. So far I have found in the manual (Figure 11: Flow chart of the model main program) that floats are stepped in time every baroclinic time step. Presumably the latest time-stepped 3D velocity is integrated to add the latest piece of trajectory.

Could anyone confirm this is accurate or not?

Could anyone point me in the direction of paper (s) that would elaborate on the topic?

thanks many,

R.

p.s. thank you indeed for the manual Kate et. al.


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 Post subject: Re: Details for floats
PostPosted: Mon Aug 13, 2012 4:52 pm 
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Joined: Wed Jul 02, 2003 5:29 pm
Posts: 3633
Location: IMS/UAF, USA
The place to look is in step_floats.F, which says:
Code:
!  This routine time-steps  simulated  floats  trajectories using a    !
!  fourth-order Milne predictor and fourth-order Hamming corrector.    !

The last time I wrote up the float code, it was using fourth-order Runge-Kutta, which required four interpolations to the float location. The current code only needs two per timestep.


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 Post subject: Re: Details for floats
PostPosted: Tue Aug 14, 2012 12:55 am 
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Joined: Fri Jan 08, 2010 7:22 pm
Posts: 139
Location: Theiss Research
many thanks Kate, that all makes sense.


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