Optimal F10.7-Related Solar Activity Index for an Empirical Model of the Ionospheric F2 Layer

2018 ◽  
Vol 12 (4) ◽  
pp. 782-785 ◽  
Author(s):  
N. V. Chirik ◽  
M. V. Klimenko ◽  
A. T. Karpachev ◽  
K. G. Ratovskii ◽  
V. V. Klimenko ◽  
...  
Keyword(s):  
Solar Activity ◽  
Empirical Model ◽  
Activity Index ◽  
Solar Activity Index

Total sunspot area as a solar activity index

2006 ◽  
Vol 40 (6) ◽  
pp. 521-526 ◽  
Author(s):  
A. P. Sarychev ◽  
E. M. Roshchina
Keyword(s):  
Solar Activity ◽  
Activity Index ◽  
Sunspot Area ◽  
Solar Activity Index

scholarly journals Seasonal and interannual variations in the [OI] 630 nm atmospheric emission as derived from observations over Eastern Siberia in 2011–2017

2018 ◽  
Vol 4 (2) ◽  
pp. 58-62
Author(s):  
Александр Михалев ◽  
Aleksandr Mikhalev
Keyword(s):  
Solar Activity ◽  
Activity Index ◽  
Mean Value ◽  
Interannual Variations ◽  
Eastern Siberia ◽  
Atmospheric Emission ◽  
Solar Activity Index ◽  
Summer Maximum ◽  
Academy Of Sciences ◽  
Seasonal And Interannual Variations

Seasonal and interannual variations in the [OI] 630 nm atmospheric emission are studied from observations of airglow in Eastern Siberia. Among features of seasonal variation in this emission are a pronounced summer maximum, an autumn minimum, and a strong interannual variability in winter months, as well as an increase in the correlation coefficient with a monthly mean value of the F10.7 solar activity index in periods close to equinoxes. We identify possible causes and phenomena (including solar activity) that form the seasonal and interannual variations in the 630 nm atmospheric emission. In this study, we have used observational data from the Geophysical Observatory of the Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS, 52° N, 103° E) for 2011–2017.

scholarly journals Multiwave Siberian Radioheliograph

2020 ◽  
Vol 6 (2) ◽  
pp. 30-40
Author(s):  
Alexander Altyntsev ◽  
Sergey Lesovoi ◽  
Mariia Globa ◽  
Aleksey Gubin ◽  
Aleksey Kochanov ◽  
...  
Keyword(s):  
Solar Activity ◽  
Solar Flares ◽  
Activity Index ◽  
Solar Radio Emission ◽  
Microwave Range ◽  
Short Term ◽  
Plasma Parameters ◽  
Solar Activity Index ◽  
Term Forecast ◽  
Mass Ejection

The article discusses characteristics, fundamental and applied tasks of the Siberian Radioheliograph that is developed at the ISTP SB RAS Radio Astrophysical Observatory and spectropolarimetric complex that measures the total flux of solar radio emission. The multi-wave mapping of the Sun in the microwave range is a powerful and relatively inexpensive, in comparison with space technologies, means of observing solar activity processes and diagnosing plasma parameters. All-weather monitoring of electromagnetic solar emission (in the range from meter to millimeter waves, including measurements of the solar activity index at 2.8 GHz), and at the location of other diverse diagnostic facilities of the Heliogeophysical Complex, is of particular value. Radioheliograph data is necessary to develop and implement methods of short-term forecast of solar flares, measurements of kinematics and characteristics of coronal mass ejection plasma, forecast of characteristics of fast solar wind streams.

scholarly journals Seasonal and interannual variations in the [OI] 630 nm atmospheric emission as derived from observations over Eastern Siberia in 2011–2017

2018 ◽  
Vol 4 (2) ◽  
pp. 96-101 ◽  
Author(s):  
Александр Михалев ◽  
Aleksandr Mikhalev
Keyword(s):  
Solar Activity ◽  
Activity Index ◽  
Mean Value ◽  
Interannual Variations ◽  
Eastern Siberia ◽  
Atmospheric Emission ◽  
Solar Activity Index ◽  
Summer Maximum ◽  
Academy Of Sciences ◽  
Seasonal And Interannual Variations

Seasonal and interannual variations in the [OI] 630 nm atmospheric emission are studied from observations of airglow in Eastern Siberia. Among features of seasonal variation in this emission are a pronounced summer maximum, an autumn minimum, and a strong interannual variability in winter months, as well as an increase in the correlation coefficient with a monthly mean value of the F10.7 solar activity index in periods close to equinoxes. We identify possible causes and phenomena (including solar activity) that form the seasonal and interannual variations in the 630 nm atmospheric emission. In this study, we have used observational data from the Geophysical Observatory of the Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS, 52° N, 103° E) for 2011–2017.

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