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Reliable prediction of the solar cycle is a formidable challenge, yet it is increasingly vital in our technology-dependent society as solar activity drives space weather. Various methods, including precursors, nonlinear curve fitting and…

太阳与恒星天体物理 · 物理学 2026-04-20 Bidya Binay Karak

The solar magnetic field, thought to be generated by the motion of plasma within the Sun, alternates on the order of 11-year cycles and is incompletely understood. Industries rely on accurate forecasts of solar activity, but can solar…

太阳与恒星天体物理 · 物理学 2025-02-20 Floe Foxon

We discuss the difficulties of predicting the solar cycle using mean-field models. Here we argue that these difficulties arise owing to the significant modulation of the solar activity cycle, and that this modulation arises owing to either…

天体物理学 · 物理学 2009-06-23 Paul J. Bushby , Steven M. Tobias

Total solar irradiance variations, about 0.1% between solar activity maximum and minimum, are available from accurate satellite measurements since 1978 and thus do not provide useful information on longer-term secular trends. Recently,…

太阳与恒星天体物理 · 物理学 2012-05-23 S. Sello

We discuss a prediction of the solar activity on a short time-scale applying the method based on a combination of a nonlinear mean-field dynamo model and the artificial neural network. The artificial neural network which serves as a…

Solar cycles are studied with the Version 2 monthly smoothed international sunspot number, the variations of which are found to be well represented by the modified logistic differential equation with four parameters: maximum cumulative…

太阳与恒星天体物理 · 物理学 2018-12-19 G. Qin , S. -S. Wu

The prediction of solar activity is important for advanced technologies and space activities. The peak sunspot number (SSN), which can represent the solar activity, has declined continuously in the past four solar cycles (21$-$24), and the…

太阳与恒星天体物理 · 物理学 2021-10-08 S. -S. Wu , G. Qin

Human living environment is influenced by intense solar activity. The solar activity exhibits periodicity and regularity. Although many deep-learning models are currently used for solar cycle prediction, most of them are based on a…

太阳与恒星天体物理 · 物理学 2025-03-04 Cui Zhao , Kun Liu , Shangbin Yang , Jinchao Xia , Jingxia Chen , Jie Ren , Shiyuan Liu , Fangyuan He

Ahead-of-time forecasting of the output power of power plants is essential for the stability of the electricity grid and ensuring uninterrupted service. However, forecasting renewable energy sources is difficult due to the chaotic behavior…

计算机视觉与模式识别 · 计算机科学 2023-10-27 Anas Al-lahham , Obaidah Theeb , Khaled Elalem , Tariq A. Alshawi , Saleh A. Alshebeili

The problem of prediction of a given time series is examined on the basis of recent nonlinear dynamics theories. Particular attention is devoted to forecast the amplitude and phase of one of the most common solar indicator activity, the…

数据分析、统计与概率 · 物理学 2007-05-23 Stefano Sello

The prediction of the strength of future solar cycles is of interest because of its practical significance for space weather and as a test of our theoretical understanding of the solar cycle. The Babcock-Leighton mechanism allows…

太阳与恒星天体物理 · 物理学 2018-08-29 Jie Jiang , Jing-Xiu Wang , Qi-Rong Jiao , Jin-Bin Cao

The growing interest in the "Medieval Climate Anomaly" (MCA) and its possible link to anomalous solar activity has prompted new reconstructions of solar activity based on cosmogenic radionuclides. These proxies however do not sufficiently…

太阳与恒星天体物理 · 物理学 2015-06-04 J. M. Vaquero , R. M. Trigo

For short-term solar irradiance forecasting, the traditional point forecasting methods are rendered less useful due to the non-stationary characteristic of solar power. The amount of operating reserves required to maintain reliable…

机器学习 · 计算机科学 2023-08-02 Sakshi Mishra , Praveen Palanisamy

The Maunder minimum (MM) of greatly reduced solar activity took place in 1645-1715, but the exact level of sunspot activity is uncertain as based, to a large extent, on historical generic statements of the absence of spots on the Sun. Here…

太阳与恒星天体物理 · 物理学 2015-05-11 J. M. Vaquero , G. A. Kovaltsov , I. G. Usoskin , V. M. S. Carrasco , M. C. Gallego

The 11-year solar cycle is the dominant pattern of solar activity reflecting the oscillatory dynamo mechanism in the Sun. Solar cycles were directly observed since 1700, while indirect proxies suggest their existence over a much longer…

太阳与恒星天体物理 · 物理学 2021-03-30 I. G. Usoskin , S. K. Solanki , N. Krivova , B. Hofer , G. A. Kovaltsov , L. Wacker , N. Brehm , B. Kromer

Solar irradiance forecasts can be dynamic and unreliable due to changing weather conditions. Near the Arctic circle, this also translates into a distinct set of further challenges. This work is forecasting solar irradiance with Norwegian…

机器学习 · 计算机科学 2025-01-20 Niklas Erdmann , Lars Ø. Bentsen , Roy Stenbro , Heine N. Riise , Narada Warakagoda , Paal Engelstad

Having advanced knowledge of solar activity is important because the Sun's magnetic output governs space weather and impacts technologies reliant on space. However, the irregular nature of the solar cycle makes solar activity predictions a…

太阳与恒星天体物理 · 物理学 2013-12-31 Dibyendu Nandy , Bidya Binay Karak

A Bayesian method for forecasting solar cycles is presented. The approach combines a Fokker--Planck description of short--timescale (daily) fluctuations in sunspot number (\citeauthor{NobleEtAl2011}, 2011, \apj{} \textbf{732}, 5) with…

太阳与恒星天体物理 · 物理学 2015-06-03 Patrick L. Noble , Michael S. Wheatland

Sunspot number (SSN) is an important - albeit nuanced - parameter that can be used as an indirect measure of solar activity. Predictions of upcoming active intervals, including the peak and timing of solar maximum can have important…

空间物理 · 物理学 2023-05-31 Pete Riley

A review of solar cycle prediction methods and their performance is given, including forecasts for cycle 24 and focusing on aspects of the solar cycle prediction problem that have a bearing on dynamo theory. The scope of the review is…

太阳与恒星天体物理 · 物理学 2015-05-20 K. Petrovay
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