pvlib.solarposition.ephemeris¶
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pvlib.solarposition.
ephemeris
(time, latitude, longitude, pressure=101325, temperature=12)[source]¶ Python-native solar position calculator. The accuracy of this code is not guaranteed. Consider using the built-in spa_c code or the PyEphem library.
Parameters: - time : pandas.DatetimeIndex
- latitude : float
- longitude : float
- pressure : float or Series, default 101325
Ambient pressure (Pascals)
- temperature : float or Series, default 12
Ambient temperature (C)
Returns: - DataFrame with the following columns:
- apparent_elevation : apparent sun elevation accounting for atmospheric refraction.
- elevation : actual elevation (not accounting for refraction) of the sun in decimal degrees, 0 = on horizon. The complement of the zenith angle.
- azimuth : Azimuth of the sun in decimal degrees East of North. This is the complement of the apparent zenith angle.
- apparent_zenith : apparent sun zenith accounting for atmospheric refraction.
- zenith : Solar zenith angle
- solar_time : Solar time in decimal hours (solar noon is 12.00).
See also
References
Grover Hughes’ class and related class materials on Engineering Astronomy at Sandia National Laboratories, 1985.