Module grena3 

Grena3 algorithm implementation.

Implements algorithm #3 from Grena (2012).

Designed for 2010-2110 with 0.01° accuracy. ~10x faster than SPA.

Reference: Grena, R. (2012). Five new algorithms for the computation of sun position from 2010 to 2110. Solar Energy, 86(5), 1323-1337. DOI: http://dx.doi.org/10.1016/j.solener.2012.01.024

Functions

calc_t_from_components

Calculate t parameter from date/time components (days since 2000-01-01 12:00:00 UT).

solar_positionchrono

Calculate solar position using the Grena3 algorithm.

solar_position_from_t

Calculate solar position from time parameter t.