Articles | Volume 12, issue 1
https://doi.org/10.5194/asr-12-5-2015
https://doi.org/10.5194/asr-12-5-2015
18 Feb 2015
 | 18 Feb 2015

Estimating the photosynthetically active radiation under clear skies by means of a new approach

W. Wandji Nyamsi, B. Espinar, P. Blanc, and L. Wald

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Latest update: 21 May 2025
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Short summary
We propose an innovative method to estimate the Photosynthetically Active Radiation (PAR) under clear sky conditions derived from the fast approach of Kato et al. (1999). It provides very good results better than the two state-of-the-art empirical methods computing the daily mean of PAR from the daily mean of total irradiance. In addition, this technique may be extended to be able to accurately estimate other spectral quantities taking into account absorption of plants photosynthetic pigments.
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