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Solar Radiation

by Felix Hebeler

02 May 2008 (Updated 14 May 2008)

No BSD License

Calculates the hourly solar radiation (direct+diffuse+reflected) for a DEM integrated over on year

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Description

Solarradiation.m is used to calculate the solar radiation for a digital elevation model integrated over one year. Radiation is calculated depending on latitude, elevation, horizon shading, slope, aspect, time of year and hour of the day (day length/season) and ground reflectance.
Temporal resolution of radiation calculation over sunshine hours can be set freely (1 hour default).
The script follows the approach by Kumar et al (1997). Simple unweighed 4 nearest neighbour gradient calculation is used and relief shading is not accounted for.

Reference: Kumar, L, Skidmore AK and Knowles E 1997: Modelling topographic variation in solar radiation in
a GIS environment. Int.J.Geogr.Info.Sys. 11(5), 475-497

MATLAB release

MATLAB 7.4 (R2007a)

Tags for This File
Everyone's Tags	difusse radiation, insolation, reflectance, solar, solar radiation(2)
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Comments and Ratings (1)
25 Apr 2009	EIE EIE

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Updates
05 May 2008	Attach smaller image
14 May 2008	Includes variable daily time steps. Improved example.

Tag Activity for this File
Tag	Applied By	Date/Time
solar radiation	Felix Hebeler	22 Oct 2008 09:59:53
insolation	Felix Hebeler	22 Oct 2008 09:59:53
reflectance	Felix Hebeler	22 Oct 2008 09:59:53
solar	Felix Hebeler	22 Oct 2008 09:59:53
difusse radiation	Felix Hebeler	22 Oct 2008 09:59:53
solar radiation	vincenzo ficco	11 Jul 2009 14:21:24

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