pvlib.irradiance.campbell_norman#

pvlib.irradiance.campbell_norman(zenith, transmittance, pressure=101325.0, dni_extra=1367.0)[source]#

Determine DNI, DHI, GHI from extraterrestrial flux, transmittance, and atmospheric pressure.

Parameters:

zenith (pd.Series) – True (not refraction-corrected) zenith angles. If zenith is a vector, it must be of the same size as all other vector inputs. [°]
transmittance (float) – Atmospheric transmittance between 0 and 1.
pressure (float, default 101325.0) – Air pressure. See pressure. [Pa]
dni_extra (float, default 1367.0) – Direct irradiance incident at the top of the atmosphere. See dni_extra. [Wm⁻²]

Returns:

irradiance (DataFrame) – Modeled direct normal irradiance, direct horizontal irradiance, and global horizontal irradiance. [Wm⁻²]

References