For 'simple' methods like Hamon, the resulting PET estimates can exclude areas above and below a certain latitude (i.e. returns NaNs), even though the input data ranges between -90 and 90.
The area excluded changes depending on the date of the input data.
So probably that has to do with sunlight hours derived from latitude at a given date? Not per se wrong, but maybe good to either return 0 instead of NaNs (if that makes sense) or throw a warning so the user knows why this happens.
Also, probably good to specify this behaviour in the documentation somewhere.
For 'simple' methods like
Hamon, the resulting PET estimates can exclude areas above and below a certain latitude (i.e. returns NaNs), even though the input data ranges between -90 and 90.The area excluded changes depending on the date of the input data.
So probably that has to do with sunlight hours derived from latitude at a given date? Not per se wrong, but maybe good to either return 0 instead of NaNs (if that makes sense) or throw a warning so the user knows why this happens.
Also, probably good to specify this behaviour in the documentation somewhere.