Smart Approaches for Evaluating Photosynthetically Active Radiation at Various Stations Based on MSG Prime Satellite Imagery

Photosynthetically active radiation (PAR) is the 400–700 nm portion of solar spectrum that photoautotrophic organisms including plants, algae, and cyanobacteria use for photosynthesis. PAR a key variable in global ecosystem Earth system modeling, playing prominent role carbon water cycling. Alongside air temperature, availability, atmospheric CO2 concentration, controls photosynthesis consequently biomass productivity general. The management agricultural horticultural crops, forests, grasslands, even grasses at sports venues non-exhaustive list applications which an accurate knowledge resource desirable. Modern agrivoltaic systems also require good conjunction with variables needed to monitor co-located photovoltaic system. In situ quality-controlled sensors provide high-quality information specific locations. However, due associated installation maintenance costs, such data are relatively scarce generally extend over restricted sometimes non-continuous period. Numerous studies have already demonstrated potential offered by surface estimates based on satellite as reliable alternatives measurements. accuracy these estimations site-dependent related, example, local climate, landscape, viewing angle satellite. To assess models, we inter-compared 11 methods estimating 30 min satellite-derived 33 ground-based station locations several climate regions Europe, Africa, South America. Averaged across stations, results showed average relative biases (relative measurement mean) 1 20%, standard deviation 25 30%, root mean square error 25% 35% correlation coefficient always above 0.95 all methods. Improved performance was seen cloud-free sites, quality degraded towards edge Meteosat Second Generation area. A compromise between computational time, memory allocation, achieved most using Jacovides applied horizontal irradiance from HelioClim-3 or CAMS Radiation Service. conclusion, can alternative estimation applications.