pvlib.solarposition.solar_zenith_analytical

pvlib.solarposition.solar_zenith_analytical(latitude, hourangle, declination)[source]

Analytical expression of solar zenith angle based on spherical trigonometry.

Warning

The analytic form neglects the effect of atmospheric refraction.

Parameters:
  • latitude (numeric) – Latitude of location in radians.
  • hourangle (numeric) – Hour angle in the local solar time in radians.
  • declination (numeric) – Declination of the sun in radians.
Returns:

zenith (numeric) – Solar zenith angle in radians.

References

[1]J. A. Duffie and W. A. Beckman, “Solar Engineering of Thermal Processes, 3rd Edition” pp. 14, J. Wiley and Sons, New York (2006)
[2]J. H. Seinfeld and S. N. Pandis, “Atmospheric Chemistry and Physics” p. 132, J. Wiley (1998)
[3]Daryl R. Myers, “Solar Radiation: Practical Modeling for Renewable Energy Applications”, p. 5 CRC Press (2013)
[4]Wikipedia: Solar Zenith Angle
[5]PVCDROM: Sun’s Position

See also

declination_spencer71(), declination_cooper69(), hour_angle()