Calculates insolation on tilted surfaces, computes atmospheric transmittance and related parameters such as: Earth radius vector, declination, sunset and sunrise, daylength, equation of time, vector in the direction of the sun, vector normal to surface, and some atmospheric physics.

Version: | 1.1.1 |

Depends: | methods |

Imports: | raster |

Suggests: | datasets, graphics, raster, rgl, stats |

Published: | 2014-03-04 |

Author: | Javier G. Corripio |

Maintainer: | Javier G. Corrripio <jgc at meteoexploration.com> |

License: | GPL (≥ 2) |

URL: | http://www.meteoexploration.com/R/insol/ |

Package source: | insol_1.1.1.tar.gz |

MacOS X binary: | insol_1.1.1.tgz |

Windows binary: | insol_1.1.1.zip |

Reference manual: | insol.pdf |

March, 2014

A new corrected version 1.1.1 is available above and in the CRAN repository.

Bird, R. E. and Hulstrom, R. L. (1981a) Review, evaluation and improvements of direct irradiance models, *Trans. ASME J. Solar Energy Eng.* 103, 182-192.

Bird, R. E. and Hulstrom, R. L. (1981b) *A simplified clear sky model for direct and diffuse insolation on horizontal surfaces*,
Technical Report SERI/TR-642-761, Solar Research Institute, Golden, Colorado. pdf

Bourges, B.: 1985, Improvement in solar declination computation, *Solar Energy* 35(4), 367-369.

Corripio, J. G.: 2003, Vectorial algebra algorithms for calculating terrain parameters from DEMs and the position of the sun
for solar radiation modelling in mountainous terrain, *International Journal of Geographical Information Science* 17(1), 1-23.
pdf

Danby, J. M. Eqn. 6.16.4 in *Fundamentals of Celestial Mechanics*, 2nd ed. Richmond, VA: Willmann-Bell, p. 207, 1988.

Iqbal, M. (1983) *An Introduction to Solar Radiation*, Academic Press, Toronto.

Meeus, J. 1999. *Astronomical Algorithms*. Willmann-Bell, Richmond, Virginia, USA.

Reda, I. and Andreas, A. 2003. *Solar Position Algorithm for Solar Radiation Applications*. 55 pp.; NREL Report No. TP-560-34302, Revised January 2008.
http://www.nrel.gov/docs/fy08osti/34302.pdf

http://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html

http://scienceworld.wolfram.com/astronomy/JulianDate.html