Bernat Nicolau

It is quite hard to do the testing of the code since PVGIS directly provides the transposed data, without providing GHI, DHI and DNI (if I am wrong please tell...

I have come to realize that the Muneer transposition is not as straightforward as I thought. At the beginning I was following this [paper](https://doi.org/10.1177/014362449001100405) which I understand is the original...

> > since PVGIS directly provides the transposed data, without providing GHI, DHI and DNI (if I am wrong please tell me) > > It may be possible to recover...

> @BernatNicolau I would choose one (my preference is also 2004) and name it `muneer2004` or something similar. After having read the book section, I finally understood that the model...

As a sanity check, I have downloaded data of PVGIS (POA) for a certain location, and have compared it with the Muneer transposition using Solcast data (GHI, DHI and DNI)...

> > (Note that the solar resource is different in each dataset) > > It's very odd that the scatter patterns are extremely similar--maybe that's a clue to something the...

> (Attempting to) reproduce PVGIS's transposition can be done by retrieving GHI,DHI via the TMY endpoint. > > Click to show code > ```python > import pvlib > import pandas...

> > I think these are pretty good results! > > Me too. Plotting individual values rather than monthly averages/sums is also better. You could plot the difference or ratio...

> You could plot the difference or ratio now to gain insight into the remaining deviations. I have plotted the difference between PVGIS sky diffuse and the modelled (with `b=0`),...

I bring good news, I have created the scenario of sky diffuse when the solar altitude is low (