pvlib.solarposition.get_solarposition

pvlib.solarposition.get_solarposition(time, latitude, longitude, altitude=None, pressure=None, method='nrel_numpy', temperature=12, **kwargs)[source]

A convenience wrapper for the solar position calculators.

Parameters:
time : pandas.DatetimeIndex
latitude : float
longitude : float
altitude : None or float, default None

If None, computed from pressure. Assumed to be 0 m if pressure is also None.

pressure : None or float, default None

If None, computed from altitude. Assumed to be 101325 Pa if altitude is also None.

method : string, default ‘nrel_numpy’

‘nrel_numpy’ uses an implementation of the NREL SPA algorithm described in [1] (default, recommended): spa_python()

‘nrel_numba’ uses an implementation of the NREL SPA algorithm described in [1], but also compiles the code first: spa_python()

‘pyephem’ uses the PyEphem package: pyephem()

‘ephemeris’ uses the pvlib ephemeris code: ephemeris()

‘nrel_c’ uses the NREL SPA C code [3]: spa_c()

temperature : float, default 12

Degrees C.

Other keywords are passed to the underlying solar position function.

References

[1] I. Reda and A. Andreas, Solar position algorithm for solar radiation applications. Solar Energy, vol. 76, no. 5, pp. 577-589, 2004.

[2] I. Reda and A. Andreas, Corrigendum to Solar position algorithm for solar radiation applications. Solar Energy, vol. 81, no. 6, p. 838, 2007.

[3] NREL SPA code: http://rredc.nrel.gov/solar/codesandalgorithms/spa/