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For a "reference day" of minimal solar activity between cycles 23 and 24 we compute the brightness temperature from solar spectral irradiance for each wavelength. We consider small variations of irradiance and temperature about the…

Solar and Stellar Astrophysics · Physics 2022-02-09 Robert F. Cahalan , Paulino Ajiquichi , Gaspar Yataz

Solar radio observation is a method used to study the Sun. It is very important for space weather early warning and solar physics research to automatically classify solar radio spectrums in real time and judge whether there is a solar radio…

Instrumentation and Methods for Astrophysics · Physics 2025-02-07 Jian Chen , Guowu Yuan , Hao Zhou , Chengming Tan , Lei Yang , Siqi Li

Given the rarity of significant solar flares compared to smaller ones, training effective machine learning models for solar activity forecasting is challenging due to insufficient data. This study proposes using generative deep learning…

Solar and Stellar Astrophysics · Physics 2024-04-04 Francesco P. Ramunno , S. Hackstein , V. Kinakh , M. Drozdova , G. Quetant , A. Csillaghy , S. Voloshynovskiy

The variation of total solar irradiance (TSI) has been measured since 1978 and that of the spectral irradiance for an even shorter amount of time. Semi-empirical models are now available that reproduce over 80% of the measured irradiance…

Solar and Stellar Astrophysics · Physics 2013-03-11 N. A. Krivova , S. K. Solanki , Y. C. Unruh

Radiative transfer coupled with highly realistic simulations of the solar atmosphere is routinely used to infer the physical properties underlying solar observations. Due to its computational efficiency, the method of short-characteristics…

Solar and Stellar Astrophysics · Physics 2018-04-17 Courtney L. Peck , Serena Criscuoli , Mark P. Rast

Smooth power generation from solar stations demand accurate, reliable and efficient forecast of solar energy for optimal integration to cater market demand; however, the implicit instability of solar energy production may cause serious…

Atmospheric and Oceanic Physics · Physics 2020-12-02 Farah Shahid , Aneela Zameer , Mudasser Afzal , Muhammad Hassan

Distribution system end users are transforming from passive to active participants, marked by the push towards widespread adoption of edge-level Distributed Energy Resources (DERs). This paper addresses the challenges in distribution system…

Systems and Control · Electrical Eng. & Systems 2025-10-28 Arun Kumar Karngala , Chanan Singh , Le Xie

The solar spectral irradiance (SSI) depicts the spectral distribution of solar energy flux reaching the top of the Earth's atmosphere. Daily SSI measurements constitute a matrix with spectrally (rows) and temporally (columns) resolved solar…

Applications · Statistics 2026-05-21 Yuxuan Ke , Xianglei Huang , Odele Coddington , Yang Chen

Mathematical modelling and defining useful recommendations for construction and regimes of exploitation for hot water solar installation with thermal stratification is the main purpose of this work. A special experimental solar module for…

Computational Engineering, Finance, and Science · Computer Science 2007-05-23 Stanko Vl. Shtrakov , Anton Stoilov

The uncertainties associated with technology- and geography-specific degradation rates make it difficult to calculate the levelized cost of energy (LCOE), and thus the economic viability of solar energy. In this regard, millions of fielded…

Applied Physics · Physics 2018-02-06 Xingshu Sun , Raghu Vamsi Krishna Chavali , Muhammad Ashraful Alam

The model of stochastic acceleration of particles by turbulence has been successful in explaining many observed features of solar flares. Here we demonstrate a new method to obtain the accelerated electron spectrum and important…

Solar and Stellar Astrophysics · Physics 2015-05-18 Vahe Petrosian , Qingrong Chen

For many years, there seemed to be significant differences between the continuum intensity distributions derived from observations and simulations of the solar photosphere. In order to settle the discussion on these apparent discrepancies,…

Solar and Stellar Astrophysics · Physics 2009-08-27 S. Wedemeyer-Böhm , L. Rouppe van der Voort

All productive branches of society need an estimate to be able to control their expenses well. In the energy business, electric utilities use this information to control the power flow in the grid. For better energy production estimation of…

Signal Processing · Electrical Eng. & Systems 2020-03-10 Hugo Abreu Mendes , Henrique Ferreira Nunes , Manoel da Nobrega Marinho , Paulo Salgado Gomes de Mattos Neto

Foundation models have demonstrated remarkable success across various scientific domains, motivating our exploration of their potential in solar physics. In this paper, we present Solaris, the first foundation model for forecasting the…

Solar and Stellar Astrophysics · Physics 2024-11-26 Harris Abdul Majid , Pietro Sittoni , Francesco Tudisco

The occlusion of the sun by clouds is one of the primary sources of uncertainties in solar power generation, and is a factor that affects the wide-spread use of solar power as a primary energy source. Real-time forecasting of cloud movement…

Computer Vision and Pattern Recognition · Computer Science 2024-09-19 Leron Julian , Haejoon Lee , Soummya Kar , Aswin C. Sankaranarayanan

Many residential energy consumers have installed photovoltaic (PV) panels and energy storage systems. These residential users can aggregate and participate in the energy markets. A stochastic decision making model for an aggregation of…

Optimization and Control · Mathematics 2020-02-21 Hossein Khazaei , Ramin Moslemi , Ratnesh Sharma

Measurements of physical parameters for stars and (exo)planets are often quoted in units normalized to the Sun and/or Earth. The nominal total solar irradiance, ${S}^{\rm N}_{\odot}$, while based on a current best estimate with…

Earth and Planetary Astrophysics · Physics 2025-12-24 Eric E. Mamajek , Jason T. Wright , Noah W. Tuchow , Patrick A. Young , Matthew A. Kenworthy , Emily A. Gilbert

Energy harvesting from the surroundings is a promising solution to perpetually power-up wireless sensor communications. This paper presents a data-driven approach of finding optimal transmission policies for a solar-powered sensor node that…

Networking and Internet Architecture · Computer Science 2014-05-29 Meng-Lin Ku , Yan Chen , K. J. Ray Liu

Context. The contribution of quiet-Sun regions to the solar irradiance variability is currently unclear. Some solar-cycle variations of the quiet-Sun physical structure, such as the temperature gradient, might affect the irradiance. The…

Solar and Stellar Astrophysics · Physics 2018-09-05 M. Faurobert , M. Carbillet , L. Marquis , A. Chiavassa , G. Ricort

Solar panels are installed by a large and growing number of households due to the convenience of having cheap and renewable energy to power house appliances. In contrast to other energy sources solar installations are distributed very…

Computer Vision and Pattern Recognition · Computer Science 2018-10-12 R. L. Curier , T. J. A. De Jong , Katharina Strauch , Katharina Cramer , Natalie Rosenski , Clara Schartner , M. Debusschere , Hannah Ziemons , Deniz Iren , Stefano Bromuri