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) – Must be localized or UTC will be assumed.
latitude (float) – Latitude in decimal degrees. Positive north of equator, negative to south.
longitude (float) – Longitude in decimal degrees. Positive east of prime meridian, negative to west.
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.
kwargs – Other keywords are passed to the solar position function specified by the
method
argument.
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/