pvlib.atmosphere.angstrom_alpha¶

pvlib.atmosphere.angstrom_alpha(aod1, lambda1, aod2, lambda2)[source]¶

Calculate Angstrom alpha exponent.

Parameters:	aod1 : numeric first aerosol optical depth lambda1 : numeric wavelength in nanometers corresponding to `aod1` aod2 : numeric second aerosol optical depth lambda2 : numeric wavelength in nanometers corresponding to `aod2`
Returns:	alpha : numeric Angstrom \(\alpha\) exponent for AOD in `(lambda1, lambda2)`