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

GRASS GRASS user
1

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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2

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
--
View this message in context:
http://n2.nabble.com/Calculating-real-sky-condition-with-r.sun-tp2352254p2352254.html
Sent from the Grass - Users mailing list archive at Nabble.com.

_______________________________________________
grass-user mailing list
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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

3

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
--
View this message in context:
http://n2.nabble.com/Calculating-real-sky-condition-with-r.sun-tp2352254p2352254.html
Sent from the Grass - Users mailing list archive at Nabble.com.

_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user

--
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

_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user

--
View this message in context: http://n2.nabble.com/Calculating-real-sky-condition-with-r.sun-tp2352254p2358844.html
Sent from the Grass - Users mailing list archive at Nabble.com.