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1. Medium-Sized Solar Cycles in Different Epochs of Solar Activity

   Abstract

   The study of a reliable series of sunspot observations has allowed formulation of a scenario for the sustainable development of solar...

   V. N. Ishkov in Geomagnetism and Aeronomy

   Article 25 December 2023
   

2. Effective Solar-Activity Index for Short-Term Forecasting of the Mean Solar-Activity Index

   Abstract

   The F ₁ and F ₈₁ indices, the value of the solar-emission flux at a wavelength of 10.7 cm on a given day, and the value of the flux averaged...

   M. G. Deminov in Geomagnetism and Aeronomy

   Article 16 June 2022
   

3. Holocene solar activity inferred from global and hemispherical cosmic-ray proxy records

   Variations in solar activity have been proposed to play an important role in recent and past climate change. To study this link on longer timescales,...

   Andreas Nilsson, Long Nguyen, ... Raimund Muscheler in Nature Geoscience

   Article Open access 21 June 2024
   

4. Activity of Selected Solar Twins

   Abstract

   We analyze various tracers of magnetic activity for 23 solar twins which are characterized by significant scatter of lithium abundance in...

   M. M. Katsova, B. A. Nizamov, A. A. Shlyapnikov in Geomagnetism and Aeronomy

   Article 01 December 2022
   

5. Possible connection between solar activity and local seismicity

   Recently, much attention has been paid to the relationship between solar and seismic activities toward earthquake (EQ) prediction. Some researchers...

   Emad M. H. Takla, Susan W. Samwel in Terrestrial, Atmospheric and Oceanic Sciences

   Article Open access 11 July 2023
   

6. Solar Activity over the Last 10 Million Years

   Abstract

   The depth profiles of cosmogenic isotopes in the lunar regolith depend on the flux and spectrum of Galactic and solar cosmic rays (GCRs and...

   A. K. Pavlov, G. I. Vasiliev, ... D. A. Frolov in Geomagnetism and Aeronomy

   Article 01 December 2023
   

7. Danjon Effect, Solar Activity, and Volcanism

   Abstract —

   Volcanic eruption data available in the Internet archive of the Global Volcanism Program of the National Museum of Natural History of the...

   B. P. Komitov, V. I. Kaftan in Geomagnetism and Aeronomy

   Article 01 December 2022
   

8. Isotope Traces of Early Solar Activity

   Abstract

   Observations of young rapidly rotating G-type stars show that a large number of super-powerful flares occur on them. According to the early...

   G. I. Vasiliev, E. S. Melikhova, A. K. Pavlov in Geomagnetism and Aeronomy

   Article 25 December 2023
   

9. Multi-centennial ENSO-like variability response to solar activity during the holocene

   Previous reconstructions suggest a possible correlation between solar and El Niño–Southern Oscillation (ENSO) on the centennial‒millennial time...

   Weiyi Sun, Yanan Ma, ... Kefan Chen in Climate Dynamics

   Article 04 April 2024
   

10. Forecast of Modulation of Cosmic Rays with Rigidity of 10 GV in the 25th Solar Activity Cycle

    Abstract

    Based on a forecast of solar activity parameters and the model developed by the authors for modulation of Galactic cosmic rays, we forecasted...

    V. G. Yanke, A. V. Belov, ... L. A. Trefilova in Geomagnetism and Aeronomy

    Article 26 April 2024
    

11. Medium-Term Forecast of Solar Activity From Daily Data

    Abstract

    Empirical ionospheric models reflect the dependence of key ionospheric characteristics on 12-month smoothed solar activity indices. These...

    T. L. Gulyaeva, R. A. Gulyaev in Geomagnetism and Aeronomy

    Article 28 September 2022
    

12. Response of ion velocities of daytime ionospheric wavenumber-4 to solar activity observed by ROCSAT-1 and DEMETER

    The electron/ion density/temperature and ion velocities observed by the ROCSAT-1 and DEMETER satellites are used to examine the daytime wavenumber-4...

    Ching-Chung Cheng, Jann-Yenq Liu, ... Chi-Kuang Chao in Terrestrial, Atmospheric and Oceanic Sciences

    Article Open access 10 May 2024
    

13. Novel residual hybrid machine learning for solar activity prediction in smart cities

    Predicting global solar activity is crucial for smart cities, especially for space activities, communication industries, and climate change...

    Rabiu Aliyu Abdulkadir, Mohammad Kamrul Hasan, ... Mohamed Nasor in Earth Science Informatics

    Article 01 November 2023
    

14. A Model of Frequency Modulation of the 11-Year Cycle of Solar Activity

    Abstract

    Using wavelet analysis, a study was made of variations in the length of the solar cycle and their characteristic features in 1700–2020. In...

    N. G. Ptitsyna, I. M. Demina in Geomagnetism and Aeronomy

    Article 25 December 2023
    

15. Manifestations of the Turbulent Component of the Global Solar Dynamo in an Activity Minimum

    Abstract

    The solar dynamo generates a toroidal magnetic field that, forms active regions (ARs) on the surface of the Sun. The toroidal magnetic field...

    R. A. Suleimanova, V. I. Abramenko in Geomagnetism and Aeronomy

    Article 01 December 2023
    

16. Correlation analysis between the occurrence of epidemic in ancient China and solar activity

    As the globe has witnessed the pandemic, epidemic diseases exert a strong impact on human beings and ecosystems. Since the Sun is the primary energy...

    Si Chen, Yong Wei, ... Wei Lin in Science China Earth Sciences

    Article 19 December 2022

17. Principle of Witnesses and the Solar Activity Chronology

    Abstract

    We compare the dating scales of natural and annalistic archives on the basis of historical data about sunspots seen with the unaided eye and...

    Yu. A. Nagovitsyn in Geomagnetism and Aeronomy

    Article 01 December 2022
    

18. Dependence of the Annual Asymmetry Local Index for the NmF2 Median on Solar Activity

    Abstract

    Based on the medians of the F  2-layer maximum electron concentration NmF 2 for two ionospheric stations, Boulder and Hobart, in 1963–2013,...

    M. G. Deminov, G. F. Deminova in Geomagnetism and Aeronomy

    Article 31 August 2023
    

19. Solar Activity Index for the Critical Frequency of the E Layer

    Abstract —

    The index P = ( F ₁ + F ₈₁ )/2 is the optimal solar activity index for the critical frequency of the E  layer, foE , where F ₁ and F ₈₁ are the...

    M. G. Deminov, V. I. Badin, ... E. V. Nepomnyashchaya in Geomagnetism and Aeronomy

    Article 25 December 2023
    

20. Magnetic Field of the Sun and the Cycles of Solar Activity

    Abstract

    Based on the observations at the Crimean Astrophysical Observatory of the Russian Academy of Sciences and the Wilcox Solar Observatory...

    Z. S. Akhtemov, Yu. T. Tsap, V. M. Malaschuk in Geomagnetism and Aeronomy

    Article 01 December 2022