Cliff Hansen

To me, that seems like too much detail for most modelers, who want a few representative values of broadband albedo.

I like the idea of a parameter for the amount of soiling NOT washed off and can see how it would be both physically meaningful and useful. Like you, I...

I could easily be wrong here. You are passing `**module` to a position argument `module`. I believe that `**module` is expanded to a list of kwargs, which `pvsystem.sapm` interprets as...

Nit - that's NOAA database, not NREL. The link is correct.

My first reaction is "a location has a timezone". Maybe the aspiration was to offer a method that found the timezome from the position. I'm lukewarm about removing it. However,...

Only `pvlib.spa.calculate_deltat` has a hyperlink.

@adriesse do you think we factor the diffuse fraction = f(kt) functions out of the various decomposition functions?

There's no concept of magnetic north in pvlib. North is true north; that could be clarified in docstrings. As to why the optimization returned 172.4 instead of 180, I suspect...

I think this issue asks to clarify that north means true north, in docstrings.

@toddkarin in the current workflow, Ee (effective irradiance) is the irradiance that is converted to electrical current. Ee is usually estimated from broadband POA by Ee = f1 x (IAM(aoi)...