[Radiance-general] Experience implementing gendaylit with physical inputs (-G: direct - horizontal irradiance and diffuse - horizontal irradiance)

[Kyle Konis]

I am curious if anyone has experience to share regarding the generation of
skies with gendaylit using physical sensor data as input.

I would like to monitor sky conditions at a building rooftop site and plan
to collect direct - horizontal irradiance and diffuse - horizontal
irradiance using Licor pyranometers.

Both sensors will be oriented horizontally. The first will be unshaded and
record global horizontal irradiance.

The second will have a shadow band applied and will serve to record diffuse
horizontal irradiance.

I will then subtract the diffuse-horizontal contribution from the global
horizontal value to obtain an estimate of direct-horizontal irradiance.

I wanted to confirm that this is an appropriate approach, as well as to see
if anyone has an alternative (better) idea, that does not involve a
pyrheliometer.

Best,

-Kyle

-----------------------------------------------
Kyle Konis, AIA, Ph.D
Assistant Professor
School of Architecture, WAH 204
University of Southern California
Los Angeles, CA 90089-0291
http://arch.usc.edu/faculty/kkonis
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