> > 
> > Hello grassusers,
> > I'm using the Spearfish database to try out some wildland fire risk mapping 
> > methods. For one of them I need to know the insolation. Does any one know a 
> > method to generate a illumination map using a given solar elevation angle ?
> > Thanks a lot, Moniek Vesseur.


There is the program called r.sun generating solar incidence angle
and direct energy input raster maps for given latitude, time or day
from elevation, aspect and slope raster maps.
I've put it on moon also with manual pages as r.sun.tar. However,
it's still in a alpha version.

Hope this helps.

Jaro  

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Jaro Hofierka
Dept. of Cartography, Geoinformatics & Rem. Sensing
Comenius University
842 15 Bratislava
Slovakia			E-mail: hofierka@devin.fns.uniba.sk
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