Articles | Volume 12, issue 10
https://doi.org/10.5194/amt-12-5519-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-12-5519-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
ELIFAN, an algorithm for the estimation of cloud cover from sky imagers
Marie Lothon
CORRESPONDING AUTHOR
Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France
Paul Barnéoud
Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France
Omar Gabella
Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France
Fabienne Lohou
Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France
Solène Derrien
Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, Toulouse, France
Sylvain Rondi
Direction Académique Hautes-Pyrénées, Tarbes, France
formerly at: Laboratoire d'Astrophysique, University of Toulouse, Tarbes, France
Marjolaine Chiriaco
LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France
Sophie Bastin
LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, Guyancourt, France
Jean-Charles Dupont
Institut Pierre-Simon Laplace, École Polytechnique, UVSQ, Université Paris-Saclay, 91128 Palaiseau, France
Martial Haeffelin
Institut Pierre-Simon Laplace, École Polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France
Jordi Badosa
LMD, IPSL, École Polytechnique, IP Paris, ENS PSL, Sorbonne Université, CNRS, 91128 Palaiseau France
Nicolas Pascal
AERIS/ICARE Data and Services Center, 59658 Villeneuve d'Ascq, France
Nadège Montoux
Université Clermont Auvergne, CNRS, LaMP, 63000 Clermont-Ferrand, France
Data sets
ACTRIS-FR sky imagers ACTRIS https://www.actris.fr/actris-fr-data-centre/
Short summary
In the context of an atmospheric network of instrumented sites equipped with sky cameras for cloud monitoring, we present an algorithm named ELIFAN, which aims to estimate the cloud cover amount from full-sky visible daytime images. ELIFAN is based on red-to-blue ratio thresholding applied on the image pixels and on the use of a blue-sky library. We present its principle and its performance and highlight the interest of combining several complementary instruments.
In the context of an atmospheric network of instrumented sites equipped with sky cameras for...