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 (
Noneorfloat, defaultNone) – If None, computed from pressure. Assumed to be 0 m if pressure is also None.pressure (
Noneorfloat, defaultNone) – 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, default12) – Degrees C.kwargs – Other keywords are passed to the solar position function specified by the
methodargument.
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/
