[GRASS-user] Calculating real sky condition with r.sun

[buraq]

Thank you...  It really helped. 
But now I have this kind of problem. I got clear sky index (K) data from
NASA SSE. Should I use that data coefbh or coefdh. If it's a global data how
can I separate it? In other words how can I derive coefbh and coefdh from
NASA SSE clear sky index(K) data?

Thanks,
Burak


José Antonio Ruiz Arias wrote:
> 
> 
> You can find a thorough description in
> http://www.ing.unitn.it/~grass/conferences/GRASS2002/proceedings/proceedings/pdfs/Hofierka_Jaroslav.pdf
> 
> Hope this helps,
> Jose
> 
>>
>> Hi all,
>>
>> I am dealing with r.sun. I am really confused and need your help. I have
>> couple of questions. First how can I use clear sky index raster map as an
>> input to r.sun? Regardless of the first question, I have measured
>> cloudiness
>> data. How can I use this data in r.sun? Should I create coefbh and coefdh
>> from that data? If it is how?
>>
>> Thank you
>>
>> Burak
>> --
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>> Sent from the Grass - Users mailing list archive at Nabble.com.
>>
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> 
> 
> -- 
> José A. Ruiz-Arias
> Solar Radiation and Atmosphere Modelling Group
> http://matras.ujaen.es
> http://www.ujaen.es/investiga/tep220
> Physics Department, University of Jaén
> Campus Lagunillas, Building A3 066
> 23071 Jaén Spain
> Tlf: +34 953 212 474
> Fax: +34 953 212 838
> 
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> 

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