[RegCNET] surface roughness

[Travis O'Brien]

Hi Martin,

You can change the surface roughness for a given landuse category in 
Main/BLOCKDATA.F (be sure to use BLOCKDATA.F and not BLOCKDATA.f, as the 
preprocessor step will erase any changes you make if you modify the 
latter).  The parameter is called rough, and it is set in a 'data' 
block.  The Desert surface type is the 7th value over in the 'rough' 
data block.

Cheers,
-Travis-

Martin Todd wrote:
> Hello,
>
> I would like to change the surface roughness parameter for desert soil 
> surfaces. According to the RegCM users guide the roughness length (Z0) is 
> defined for each of the 20 BATS landuse categories (Table 2). The value 
> for desert surfaces is 0.05m. For certain desert types this may be too 
> high by an oerder of magnitude. Is there a way to change the Z0 values 
> for a particular landuse category in  Table 2?
>
> Many thanks
>
>
> ****************************
> Martin Todd
> Reader
> Department of Geography
> UCL (University College London)
> Pearson Building
> Gower Street
> London
> WC1E 6BT
>
> email m.todd at geog.ucl.ac.uk
> tel: +44 (0)20 7679 0571
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