Russian Federation
Russian Federation
We have analyzed the trend of solar, interplanetary, and geomagnetic SIG parameters during solar cycles 22, 23, and 24. The sunspot numbers $R$, solar flux index $F_10.7$ and Lyman Alpha $L$ indicate periodic trend during each solar cycle. In solar cycle 24 sunspot numbers $R$, $F_10.7$, and $L$ show periodic nature, but their peak is low. However, polar cap index PCI has maximum value in the latest solar cycle. We found a positive correlation between PCI and polar cap voltage PCV. This means, during this period, there is a big difference between the maximum and minimum electronic convection potential in the ionosphere. In the solar cycle 24, Sun polar fields had low magnitude compared to cycle 22 and 23. This low solar polar field corresponds to the highest difference between electronic convection potentials. The same low solar polar field also corresponds to low values in $R$, $F_10.7$, and $L$. Through continuous wavelet transform CWT, we found that solar flux, sunspot number, Lyman Alpha all have highest spectral variability from 0 to 100 months. Sunspot number, Lyman Alpha, $F_10.7$ all have a continuous spectral energy of medium and low magnitude. We suggest that these unique condition of SIG parameters have originated from solar activity.
Sunspot, solar flux, cross-correlation, wavelet analysis
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