Solar Cycle variations of ƒ<i>o</i>F2 from IGY to 1990
Noontime monthly median values of F2-layer critical frequency <i>f</i>oF2 (m) for some ionospheric stations representing low- and mid-latitudes are examined for their dependence on solar activity for the years 1957 (IGY) to 1990. This is the period for which ionospheric data in d...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2002-10-01
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Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/20/1677/2002/angeo-20-1677-2002.pdf |