Use Radiance to predict solar irradiance , not illuminace

zha · December 30, 2019, 6:46pm

Thanks @Greg_Ward for the prompt response!

While I sort of understand what you meant in your response, I still have a few remaining questions that I hope to get answer for:

When I use genskymtx, the resultant value would be expressed in the radiometric unit (i.e. watt), not in luminance?
So is it correct that if my end goal is determining solar flux, then I can just specify Tsol (as opposed to Tvis) in .mat file, and by the end of the day I don’t even need the 179 lumens/watt conversion since the calculation workflow was all handled in radiometric unit?

Here are the files that I was using. I also showed these file in a previous post:

Sorry if I sound ignorant. I am trying to learn Radiance while using it.

Thanks,

Shen