1. Long-Term Variations in the Parameters of the Middle and Upper Atmosphere and Ionosphere (Review)

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

   OriginalPaper 18 August 2020 Pages: 397 - 420

   

2. Formation and Evolutionary Changes of Coronal Holes in the Growth Phase of Cycle 23

   • I. A. Bilenko
   • K. S. Tavastsherna

   OriginalPaper 18 August 2020 Pages: 421 - 431

   

3. Cosmic Rays during Forbush Effects in March 1989 and March 1991: Spectra of Variation, Anisotropy, and Variations of Geomagnetic Cutoff Rigidity

   • M. V. Kravtsova
   • S. V. Olemskoy
   • V. E. Sdobnov

   OriginalPaper 18 August 2020 Pages: 432 - 440

   

4. Color of the Corona Continuum of July 11, 1991

   • I. S. Kim
   • N. L. Krusanova
   • I. V. Mironova

   OriginalPaper 18 August 2020 Pages: 441 - 445

   

5. Characteristics of the Energy Transfer by Alfvén Waves in the Solar Atmosphere

   • Yu. T. Tsap
   • A. V. Stepanov
   • O. V. Khaneichuk

   OriginalPaper 18 August 2020 Pages: 446 - 451

   

6. Variation of Plasma Pressure at the Auroral Oval Latitudes before, during, and after the Isolated Geomagnetic Substorm on December 22, 2008

   • M. Rojas Gamarra
   • J. Gonzalez
   • E. E. Antonova

   OriginalPaper 18 August 2020 Pages: 452 - 460

   

7. Characteristics of the Pitch-Angle Anisotropy of Energetic Protons in the Daytime Magnetosphere due to Particle Drift in the Nondipole Magnetic Field

   • A. A. Lyubchich
   • A. G. Demekhov
   • A. G. Yahnin

   OriginalPaper 18 August 2020 Pages: 461 - 471

   

8. Role of the Outer Ionosphere in the Winter/Summer Asymmetry of Auroral Electron Precipitations

   • M. G. Deminov

   OriginalPaper 18 August 2020 Pages: 472 - 476

   

9. Ionospheric Disturbances due to the Influence of Localized Thermospheric Sources

   • I. V. Karpov
   • P. A. Vasiliev

   OriginalPaper 18 August 2020 Pages: 477 - 482

   

10. Characteristics of the Growth Increment of Drift-Dissipative Instability at the Fronts of Equatorial Plasma Bubbles

    • N. M. Kashchenko
    • M. A. Nikitin

    OriginalPaper 18 August 2020 Pages: 483 - 488

    

11. Comparison of the Intensity of the Nighttime Scattered Atmospheric Radiation in the Lyman-Alpha Line from OGO-4 Satellite Measurements and Calculations

    • A. V. Pavlov
    • N. M. Pavlova

    OriginalPaper 18 August 2020 Pages: 489 - 494

    

12. Reconstruction of the Solar Activity in 1000–1700 Based on Auroral Data with Allowance for the Contribution of the Main Magnetic Field of the Earth

    • N. G. Ptitsyna
    • I. M. Demina

    OriginalPaper 18 August 2020 Pages: 495 - 506

    

13. Analytical Model of a Seismogenic Electric Field According to Data of Measurements in the Surface Layer of the Midlatitude Atmosphere and Calculation of Its Magnitude at the Ionospheric Level

    • V. V. Khegai

    OriginalPaper 18 August 2020 Pages: 507 - 520