1. Behavior of the Speed and Temperature of the Solar Wind during Interplanetary Disturbances Creating Forbush Decreases

   • A. A. Melkumyan
   • A. V. Belov
   • V. G. Yanke

   OriginalPaper 22 October 2020 Pages: 521 - 529

   

2. Equatorial Plasma Bubbles: Occurrence Probability versus Local Time

   • L. N. Sidorova

   OriginalPaper 22 October 2020 Pages: 530 - 537

   

3. Monitoring of the Electron-Acceleration Region with Auroral Kilometric Radiation

   • D. V. Chugunin
   • A. A. Chernyshov
   • M. M. Mogilevsky

   OriginalPaper 22 October 2020 Pages: 538 - 546

   

4. Evolution of High-Latitude Geomagnetic Disturbances during the Magnetic Storm of July 22, 2009

   • L. I. Gromova
   • N. G. Kleimenova
   • L. M. Malysheva

   OriginalPaper 22 October 2020 Pages: 547 - 558

   

5. Identification of Vortex Currents in the Ionosphere and Estimation of Their Parameters Based on Ground Magnetic Data

   • V. E. Chinkin
   • A. A. Soloviev
   • V. A. Pilipenko

   OriginalPaper 22 October 2020 Pages: 559 - 569

   

6. Calculation of the Ionization Rate in the Atmosphere in the Polar Region during Solar Proton Events

   • E. A. Ginzburg
   • A. A. Krivolutsky
   • I. N. Myagkova

   OriginalPaper 22 October 2020 Pages: 570 - 576

   

7. Estimation of the Ionospheric Effects of Geomagnetic Disturbances Based on Data from Wakkanai Station

   • A. D. Legen’ka
   • V. V. Khegai

   OriginalPaper 22 October 2020 Pages: 577 - 585

   

8. Trends in Parameters of the F2 Layer and the 24th Solar-Activity Cycle

   • A. D. Danilov
   • A. V. Konstantinova

   OriginalPaper 22 October 2020 Pages: 586 - 596

   

9. Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

   • I. I. Shagimuratov
   • I. E. Zakharenkova
   • I. I. Efishov

   OriginalPaper 22 October 2020 Pages: 597 - 605

   

10. Effective Solar Activity Index for the Median of the Critical Frequency of the F2 Layer

    • M. G. Deminov
    • G. F. Deminova

    OriginalPaper 22 October 2020 Pages: 606 - 610

    

11. Ionospheric Disturbances during Meteorological Storms

    • M. I. Karpov
    • I. V. Karpov
    • N. A. Korenkova

    OriginalPaper 22 October 2020 Pages: 611 - 618

    

12. Tropical Cyclones and Possible Winter Thunderstorms on Kamchatka

    • Yu. M. Mikhailov
    • S. E. Smirnov
    • O. V. Kapustina

    OriginalPaper 22 October 2020 Pages: 619 - 635

    

13. Reflection of Large Tectonic Structures of the Eastern Part of the Arctic Ocean in the Lithospheric Magnetic Field

    • L. Yu. Abramova
    • L. M. Abramova
    • S. V. Filippov

    OriginalPaper 22 October 2020 Pages: 636 - 643

    

14. Pre-earthquake Atmospheric and Ionospheric Anomalies before Taiwan Earthquakes (M 6.1 and M 6.4) on February (4th and 6th), 2018

    • C. Prasanna Simha
    • Venkatanathan Natarajan
    • Katlamudi Madhusudhana Rao

    OriginalPaper 22 October 2020 Pages: 644 - 660

    

15. Evaluating Solar Quiet Variation of the Horizontal Geomagnetic Field using Nonlinear Time Series Analysis Techniques

    • E. O. Falayi
    • A. S. Ajose
    • J. O. Adepitan

    OriginalPaper 22 October 2020 Pages: 661 - 671