Impacts of climate change and meteo-solar parameters on photosynthetically active radiation prediction using hybrid machine learning with Physics-based models

SC Nwokolo, JC Ogbulezie, AU Obiwulu - Advances in Space Research, 2022 - Elsevier
The photosynthetically active radiation (PAR) ratio of 0.45 has been applied in numerous
ecological studies to convert global solar radiation (H) to PAR by ordinary multiplication. The …

Machine learning and physics-based hybridization models for evaluation of the effects of climate change and urban expansion on photosynthetically active radiation

SC Nwokolo, N Proutsos, EL Meyer, CC Ahia - Atmosphere, 2023 - mdpi.com
Given the interdependence of climate change (CLC) and urban expansion (URE) on
ecosystem productivity in China and India, hybrid physics-based models were fitted in this …

A global review of empirical models for estimating photosynthetically active radiation

SC Nwokolo, SO Amadi - Trends in Renewable Energy, 2018 - futureenergysp.com
A good working knowledge of photosynthetically active radiation (PAR) is of vital
requirement for determining the terrestrial photosynthesis, primary productivity calculation …

Exploring the Interactive Influences of Climate Change and Urban Development on the Fraction of Absorbed Photosynthetically Active Radiation

SC Nwokolo, EL Meyer, CC Ahia - Atmosphere, 2024 - mdpi.com
This study aimed to utilize hybrid physics-based models that allow for a comprehensive
evaluation of how solar–meteorological variables influence the fraction of absorbed …

Twenty-Year Climatology of Solar UV and PAR in Cyprus: Integrating Satellite Earth Observations with Radiative Transfer Modeling

K Fragkos, I Fountoulakis, G Charalampous… - Remote Sensing, 2024 - mdpi.com
In this study, we present comprehensive climatologies of effective ultraviolet (UV) quantities
and photosynthetically active radiation (PAR) over Cyprus for the period 2004 to 2023 …

A new conventional regression model to estimate hourly photosynthetic photon flux density under all sky conditions

I Foyo Moreno, I Alados-Arboledas… - 2017 - digibug.ugr.es
In this work we propose a new and simple empirical model to estimate photosynthetic
photon flux density under all sky conditions, developed using experimental measurements …

Analysis of cloud effects on long-term global and diffuse photosynthetically active radiation at a Mediterranean site

IL Lozano, G Sánchez-Hernández… - Atmospheric …, 2022 - Elsevier
This study addresses the analysis of the cloud effects on photosynthetically active radiation
(PAR, 400–700 nm) for global (PAR Global) and its diffuse component (PAR Diffuse). To this …

[HTML][HTML] A new method to estimate aerosol radiative forcing on photosynthetically active radiation

I Foyo-Moreno, IL Lozano, I Alados… - Atmospheric …, 2023 - Elsevier
A new method to estimate aerosol radiative forcing (ARF) on photosynthetically active
radiation (PAR) is proposed using as input only the solar position and global irradiance …

[HTML][HTML] Atmospheric factors affecting global solar and photosynthetically active radiation relationship in a mediterranean forest site

ND Proutsos, A Liakatas, SG Alexandris, IX Tsiros… - Atmosphere, 2022 - mdpi.com
Light availability and its composition in components affecting plant growth as
photosynthetically active radiation (PAR), are of critical importance in agricultural and …

[HTML][HTML] Validation and calibration of models to estimate photosynthetically active radiation considering different time scales and sky conditions

M de Blas, A Garcia-Rodriguez, I Garcia… - Advances in Space …, 2022 - Elsevier
Abstract Photosynthetically Active Radiation (PAR) is a fundamental parameter for
develo** plant productivity models. Nevertheless, instrumentation for measuring PAR and …