Results 11 to 20 of about 10,821 (160)

Investigation of Applicability of Impact Factors to Estimate Solar Irradiance: Comparative Analysis Using Machine Learning Algorithms

open access: yesApplied Sciences, 2021
This study explores investigation of applicability of impact factors to estimate solar irradiance by four machine learning algorithms using climatic elements as comparative analysis: linear regression, support vector machines (SVM), a multi-layer neural ...
Jaehoon Cha   +3 more
doaj   +1 more source

Solar Resource Potentials and Annual Capacity Factor Based on the Korean Solar Irradiance Datasets Derived by the Satellite Imagery from 1996 to 2019

open access: yesRemote Sensing, 2021
The Korea Institute of Energy Research builds Korean solar irradiance datasets, using gridded solar insolation estimates derived using the University of Arizona solar irradiance based on Satellite–Korea Institute of Energy Research (UASIBS–KIER) model ...
Chang Ki Kim   +5 more
doaj   +1 more source

On the Fluctuations of the Total Solar Irradiance [PDF]

open access: yesSymposium - International Astronomical Union, 1993
The fundamental quantity for the total solar irradiance is the solar constant J which is determined by the mean Sun-Earth distance and by the energy budget in the interior of the sun. The mean distance is the major semi-axis of the earth orbit and therefore a constant of celestial mechanics.
W. Schröder, H. J. Treder
openaire   +1 more source

Version 2 of the TSIS‐1 Hybrid Solar Reference Spectrum and Extension to the Full Spectrum

open access: yesEarth and Space Science, 2023
This work describes two achievements to a key data set. First, we present version 2 of the Total and Spectral Solar Irradiance Sensor‐1 Hybrid Solar Reference Spectrum (TSIS‐1 HSRS), which has recently been recognized as a new solar irradiance reference ...
O. M. Coddington   +8 more
doaj   +1 more source

Solar irradiance in clear atmosphere: study of parameterisations of change with altitude [PDF]

open access: yesAdvances in Science and Research, 2011
Parameterisation of changes of the solar irradiance at ground level with a specific variable (e.g. solar zenithal angle, aerosol optical depth, altitude, etc.) is often used in operational processes because it saves computational time.
A. Oumbe   +6 more
doaj   +1 more source

Long-Term Variations of Global Solar Radiation and Atmospheric Constituents at Sodankylä in the Arctic

open access: yesAtmosphere, 2021
An empirical model of global solar irradiance (EMGSI) under all sky conditions was developed by using solar radiation and meteorological parameters at Sodankylä.
Jianhui Bai, Anu Heikkilä, Xuemei Zong
doaj   +1 more source

Determination of time-dependent uncertainty of the total solar irradiance records from 1978 to present

open access: yesJournal of Space Weather and Space Climate, 2016
Aims. The existing records of total solar irradiance (TSI) since 1978 differ not only in absolute values, but also show different trends. For the study of TSI variability these records need to be combined and three composites have been devised; however ...
Fröhlich Claus
doaj   +1 more source

A Feasibility Study of Photovoltaic—Electrolysis—PEM Hybrid System Integrated Into the Electric Grid System Over the Korean Peninsula

open access: yesFrontiers in Chemistry, 2021
A photovoltaic–electrolysis–PEM hybrid model was developed for a feasibility study, and simulations of several scenarios in Korea were performed. The solar irradiance was derived from the University of Arizona solar irradiance based on satellite–Korea ...
Chang Ki Kim   +4 more
doaj   +1 more source

Analyzing Regional and Local Changes in Irradiance during the 2019 Total Solar Eclipse in Chile, Using Field Observations and Analytical Modeling

open access: yesEnergies, 2021
Solar eclipses are astronomic phenomena in which the Earth’s moon transits between the planet and the Sun, projecting a shadow onto the planet’s surface.
Armando Castillejo-Cuberos   +2 more
doaj   +1 more source

Reconstruction of total solar irradiance 1974–2009 [PDF]

open access: yesAstronomy & Astrophysics, 2012
Context: The study of variations in total solar irradiance (TSI) is important for understanding how the Sun affects the Earth’s climate. Aims: Full-disk continuum images and magnetograms are now available for three full solar cycles. We investigate how modelled TSI compares with direct observations by building a consistent modelled TSI dataset.
Ball, WT   +6 more
openaire   +4 more sources

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