[Wrf-users] Re: Wrf-users Digest, Vol 33, Issue 3

[wrfhelp]

It would not make sense to use cyclic boundaries with real data.
It should work with use of real boundary conditions,
except that decades would take a lot of work to set up.

wrfhelp

On May 9, 2007, at 12:00 PM, wrf-users-request at ucar.edu wrote:

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> Today's Topics:
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>    1. Boundary condition: Seeking suggestion (Gautam Bisht)
>    2. Static Terrestrial Files (Igor Cerqueira Oliveira)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 8 May 2007 23:00:33 -0400
> From: Gautam Bisht <gbisht at MIT.EDU>
> Subject: [Wrf-users] Boundary condition: Seeking suggestion
> To: wrf-users at ucar.edu
> Message-ID: <B3EF8E44-D573-438A-BBE5-E3132112CDE3 at mit.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi,
>
> I am a graduate student and seeking some suggestion for my research.
> I am new to amospheric sci, so pardon me if my query is naive.
>
> I am trying to study the effect of vegetation controlled by
> topography on the regional climate. For the purpose, I am coupling a
> home-grown LSM model with WRF. I want to run long simulations (of the
> order of decades).
>
> In order to isolate the effects of vegetation on the regional climate
> from other large scale atmospheric processes, I was planning to use
> cyclic boundary conditions. I have am doubts about this approach now
> that running the model that long with cyclic conditions would
> eventually result in loss of energy of the system. So here is my
> question: Is there a way prescribe a synoptic forcing to WRF while
> using cyclic boundary conditions?
>
> I also noticed that for "real" cases, 4D arrays of boundary values as
> well as their tendencies are used in lateral boundary condition
> files. Is what I am trying to achieve is basically forcing the model
> with "real tendencies" while having cyclic boundary conditions?
>
> Any suggestions/comments would be greatly appreciated.
>
> With regards,
> -Gautam.
>