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Is the Relation Between Ionospheric Parameters and Solar Proxies Stable?
Author(s) -
Lastovicka Jan
Publication year - 2019
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2019gl085033
Subject(s) - ionosphere , atmospheric sciences , environmental science , series (stratigraphy) , term (time) , climatology , meteorology , geology , physics , geophysics , paleontology , quantum mechanics
Abstract The relationship between ionospheric parameters and solar activity proxies is important for long‐term studies as ionospheric climatology or long‐term trends and for modeling. It has been broadly assumed that this relationship is stable with time. Using fo F 2 and fo E of four European stations with long (1976–2014) data series, Juliusruh, Pruhonice, Rome, and Slough/Chilton, we show that it is not quite correct assumption. The dependence of yearly average values of ionospheric parameters on solar activity proxies appears to be steeper in 1996–2014 than in 1976–1995 for fo F 2 and steeper after 2000 for fo E . Also, the relationships among solar activity proxies seem to change. Yearly values of fo F 2 and fo E are very predominantly controlled by solar activity represented by proxies.