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 |

Depends: | methods |

Imports: | raster |

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

Published: | 2013-04-10 |

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.tar.gz |

MacOS X binary: | insol_1.1.tgz |

Windows binary: | insol_1.1.zip |

Reference manual: | insol.pdf |

April, 2013

A new updated version 1.1 is available above and in the CRAN repository.

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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
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pdf

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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