[RegCNET] domain size

[Moetasim Ashfaq]

Hi Jagannathan,

If you are going to use RegCM over South Asia then it is better to use the 
domain size which has been thoroughly tested. The domain size I suggested (and 
you mentioned in your earlier email) has been used frequently at 50km by various 
groups in South Asia. At 25km, you may use the domain size that we used in 
Ashfaq et al, GRL (2009).

Apart from that, it is not mandatory to have jx greater than iy - though in most 
cases jx > iy. Also, domains with large iy (latitudinal extent) are 
computationally unstable due to the limitations of map projections. In general, 
size of jx,iy,kz,ds will largely depend on the available computational resources 
and science question that someone wants to address.

Moet  


Quoting jagan TNAU <jagan at tnau.ac.in>:

> Dear Users,
> 
> To my request Bi has suggested us to use domain size of jx=90 and iy=70
> because RegCM uses 12 grid for LBC buffer zone. From earlier archive also I
> noticed that jx is always higher than the iy. Is this is a requirement for
> RegCM and if so what has to be the normal difference between the two.
> 
> -- 
> With regards
> 
> Dr.R.Jagannathan
> Professor and Head
> Agro Climate Research Centre,
> Tamil Nadu Agricultural University,
> Coimbatore - 641 003 India
> 
> PHONE: Off: 91-422-6611519 Res: 91-422-2453600
>       Fax: 91-422-2430657 Mob: 91-94438 89891
>