Results 21 to 30 of about 683,959 (300)

Characterizing the Solar Activity Using the Visibility Graph Method

open access: yesEntropy, 2023
In this paper, the Sun and its behavior are studied by means of complex networks. The complex network was built using the Visibility Graph algorithm. This method maps time series into graphs in which every element of the time series is considered as a ...
Tomás Zurita-Valencia, Víctor Muñoz
doaj   +1 more source

Time-Series Regression Model for Prediction of Mean Daily Global Solar Radiation in Al-Ain, UAE [PDF]

open access: yesISRN Renewable Energy, 2012
The availability of short-term forecast weather model for a particular country or region is essential for operation planning of energy systems. This paper presents the first step by a group of researchers at UAE University to establish a weather model for the UAE using the weather data for at least 10 years and employing various models such as ...
Hassan A. N. Hejase, Ali H. Assi
openaire   +1 more source

Calibration and Evaluation of Different Estimation Models of Daily Solar Radiation in Seasonally and Annual Time Steps in Shiraz Region

open access: yesمجله آب و خاک, 2017
Introduction: Solar radiation on the earth surface has a wide range of applications in hydrology, agriculture and meteorology. Solar radiation is an important parameter of estimated models of reference crop potential evapotranspiration such as the Penman–
Hamid Reza Fooladmand, Farzaneh Karimi
doaj   +1 more source

Investigation of the mechanism of a solar flare by means of MHD simulations above the active region in real scale of time: The choice of parameters and the appearance of a flare situation [PDF]

open access: yesOpen Astronomy, 2022
Abstract The observed primordial energy release of solar flare in the corona is explained by the mechanism of S. I. Syrovatskii, according to which the flare energy is accumulated in the current sheet. The flare release of the current sheet energy causes the observed manifestations of the flare, which are explained by the ...
Podgorny Alexander Igorevich   +2 more
openaire   +2 more sources

Ionospheric response to solar EUV variations: Preliminary results [PDF]

open access: yesAdvances in Radio Science, 2018
We investigate the ionospheric response to solar Extreme Ultraviolet (EUV) variations using different proxies, based on solar EUV spectra observed from the Solar Extreme Ultraviolet Experiment (SEE) onboard the Thermosphere Ionosphere Mesosphere ...
R. Vaishnav   +4 more
doaj   +1 more source

Influence of solar variability on the occurrence of central European weather types from 1763 to 2009 [PDF]

open access: yesClimate of the Past, 2017
The impact of solar variability on weather and climate in central Europe is still not well understood. In this paper we use a new time series of daily weather types to analyse the influence of the 11-year solar cycle on the tropospheric weather of ...
M. Schwander   +7 more
doaj   +1 more source

Short-term solar energy forecasting: Integrated computational intelligence of LSTMs and GRU.

open access: yesPLoS ONE, 2023
Problems with erroneous forecasts of electricity production from solar farms create serious operational, technological, and financial challenges to both Solar farm owners and electricity companies.
Aneela Zameer   +5 more
doaj   +1 more source

Causes of atmospheric temperature change 1960-2000: A combined attribution analysis [PDF]

open access: yes, 2003
We investigate the causes of temperature change over the last four decades, both near the surface and in the free atmosphere, using a coupled atmosphere/ocean general circulation model, HadCM3, which requires no flux correction.
Allen   +25 more
core   +1 more source

Solar photovoltaic power prediction using different machine learning methods

open access: yesEnergy Reports, 2022
The main aim of the present study is to explore the relationship between numerous input parameters and the solar photovoltaic (PV) power using machine learning (ML) models.
Bouchaib Zazoum
doaj   +1 more source

Sun sensor using a nanosatellites solar panels by means of time‐division multiplexing

open access: yesIET Science, Measurement & Technology, 2017
The solar vector, which defines the angle between the satellite and the Sun, is an important parameter for attitude control of a nanosatellite. It is highly desirable to enable accurate attitude control of a nanosatellite without increasing size and mass.
Xiaozhou Lü   +6 more
openaire   +1 more source

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