pvlib.location.Location.get_airmass

Location.get_airmass(times=None, solar_position=None, model='kastenyoung1989')

Calculate the relative and absolute airmass.

Automatically chooses zenith or apparant zenith depending on the selected model.

Parameters:

• times (None or DatetimeIndex, default None) – Only used if solar_position is not provided.
• solar_position (None or DataFrame, default None) – DataFrame with with columns ‘apparent_zenith’, ‘zenith’.
• model (str, default 'kastenyoung1989') – Relative airmass model

Returns:

airmass (DataFrame) – Columns are ‘airmass_relative’, ‘airmass_absolute’