[RegCNET] Re : Spatial resolution

[Maurice.McHugh at noaa.gov]

>From my reading, to go from global to very high resolution you need to nest with a downscaling ratio of no more than 1:10 at any time, with 1:5 being more ideal.  So, what I've been thinking is to go from ~220 km to 40 km (1:5 ratio approximately) and then from 40km to ~5-8 km (1:8 or 1:5 ratio).

I've read that the minimum resolution due to the hydrostatic nature of the model is ~5 km.  If you want to go below 5 km then the WRF model could always be used.

Regards,

Maurice


----- Original Message -----
From: Muhammad Amjad <m.amjad at gcisc.org.pk>
Date: Thursday, December 17, 2009 1:29 pm
Subject: Re: [RegCNET] Re : Spatial resolution
To: Monica Santese <monica.santese at le.infn.it>, RegCNET at lists.ictp.it


> Hi Monica,
> 
> The RegCM3 is a hydrostatic model, therefore, its horizontal resolution
> should be greater than its vertical (z) resolution.
> 
> Regards,
> 
> Amjad.
> 
> On Thu, Dec 17, 2009 at 6:21 PM, Smz Rcm <smzrcm at yahoo.fr> wrote:
> 
> >   Hi Monica,
> > I read some articles about this issue so we can go with RegCM3 at maximum
> > until 10km of spacial resolution.. But it's not adviced to go under 
> 1/10 the
> > initial global resolution.
> > for exemple with EH50M, the projection resolution is 204km, so we 
> can go at
> > max to 25km
> > I hope my answer helps
> > Sassi
> >
> > --- En date de : *Jeu 17.12.09, Monica Santese <monica.santese at le.infn.it>
> > * a écrit :
> >
> >
> > De: Monica Santese <monica.santese at le.infn.it>
> > Objet: [RegCNET] Spatial resolution
> > À: "regcnet" <regcnet at lists.ictp.it>
> > Date: Jeudi 17 Décembre 2009, 11h07
> >
> >
> >  Hi users,
> >
> > I have a question: what is the minimum spatial resolution of the 
> RegCm at
> > what is reasonable to make the run? Is ds =30 a good resolution? Or 
> it is
> > better to use a lower ds?
> >
> > Thank you
> >
> > Regards
> >
> > Monica
> >
> >
> >
> >
> >
> >
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