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Alessandro Niccolai, Seyedamir Orooji, Andrea Matteri, Emanuele Ogliari and Sonia Leva
This work proposes and evaluates a method for the nowcasting of solar irradiance variability in multiple time horizons, namely 5, 10, and 15 min ahead. The method is based on a Convolutional Neural Network structure that exploits infrared sky images acqu...
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Alexander G. Ostrovskii, Mikhail V. Emelianov, Oleg Y. Kochetov, Vyacheslav V. Kremenetskiy, Dmitry A. Shvoev, Sergey V. Volkov, Andrey G. Zatsepin, Nikolai M. Korovchinsky, Vladimir M. Olshanskiy and Alexander V. Olchev
Biogeochemical cycles of carbon transformation throughout the euphotic zone of the sea are controlled by physical processes, e.g., daily thermocline, variation in solar irradiance, thermohaline convection, and intermittent mixing. These processes should ...
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Mamphaga Ratshilengo, Caston Sigauke and Alphonce Bere
Renewable energy forecasts are critical to renewable energy grids and backup plans, operational plans, and short-term power purchases. This paper focused on short-term forecasting of high-frequency global horizontal irradiance data from one of South Afri...
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Ochuko Kelvin Overen, Edson Leroy Meyer and Golden Makaka
Solar radiation provides the most significant natural energy in buildings for space heating and daylighting. Due to atmospheric interference, solar radiation received at the Earth?s surface consists of direct beam and diffuse radiation, where diffuse can...
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Edina Chandiwana, Caston Sigauke and Alphonce Bere
Probabilistic solar power forecasting has been critical in Southern Africa because of major shortages of power due to climatic changes and other factors over the past decade. This paper discusses Gaussian process regression (GPR) coupled with core vector...
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Nouha Dkhili, Julien Eynard, Stéphane Thil and Stéphane Grieu
In a context of accelerating deployment of distributed generation in power distribution grid, this work proposes an answer to an important and urgent need for better management tools in order to ?intelligently? operate these grids and maintain quality of...
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K.S. Sivhugwana, E. Ranganai
The unsteady and intermittent feature (mainly due to atmospheric mechanisms and diurnal cycles) of solar energy resource is often a stumbling block, due to its unpredictable nature, to receiving high-intensity levels of solar radiation at ground lev...
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Irena Balog, Francesco Spinelli, Paolo Grigioni, Giampaolo Caputo, Giuseppe Napoli and Lorenzo De Silvestri
The estimation of the average daily, monthly and annual direct normal solar irradiation (DNI) was done in the region hosting the Mario Zucchelli Station, in the bay of Terra Nova (Antarctica). Estimates are based on measurements of direct normal (DNI), h...
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Lucky Ntsangwane, Brighton Mabasa, Venkataraman Sivakumar , Nosipho Zwane , Katlego Ncongwane, Joel Botai
This study reports on the performance results of the Baseline Surface Radiation Network (BSRN) quality control procedures applied to the solar radiation data, from September 2013 to December 2017, within the South African Weather Service radiometric netw...
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Ana Gracia Amillo, Lucky Ntsangwane, Thomas Huld, Jörg Trentmann
This study compares the performance of two satellite-based solar radiation methodologies for estimating the solar resource available in South Africa. Data from thirteen stations distributed in six climatic regions were considered. More than one year of h...
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