Does anyone know a library to calculate the solar spectral irradiance reaching the Earth's surface as a function of time and location? Ideally I am looking for a Phyton library but also other languages would work.

I am aware of libraries like pysolar, which calculate the total solar irradiance but I am interested in the spectral information to calculate photolysis rates.

  • $\begingroup$ I guess that angles surely effect the spectral distribution but in a first approx you can surely scale the entire spectrum. So perhaps you already have that info. For AM1.5, you can easily find it in terms of photon number, power, etc. PS: Not a typical question to ask here. $\endgroup$ – Alchimista Oct 24 at 13:46
  • $\begingroup$ thank you @Alchimista, but I am specifically interested in the change of the spectral distribution with time (i.e. the solar optical path length). I was also not sure about the relevance of my question on this site, but I thought that some atmospheric chemists may be present in the community here :-) $\endgroup$ – baccandr Oct 24 at 14:49

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