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| Titel |
Letter to the Editor: Solar-cycle variation of the daily foF2 and M(3000)F2 |
| VerfasserIn |
S. S. Kouris, P. A. Bradley, P. Dominici |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 8 ; Nr. 16, no. 8, S.1039-1042 |
| Datensatznummer |
250013400
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| Publikation (Nr.) |
 copernicus.org/angeo-16-1039-1998.pdf |
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| Zusammenfassung |
Daily values of the ionospheric
characteristics foF2 and M(3000)F2 for a given hour and month are
correlated with the corresponding daily values of sunspot number using measured
data collected at seven European locations. The significance of applying
different-order polynomials is considered and the times are confirmed when the
higher-order terms are important. Mean correlation coefficients for combined
data sets over all hours, months and stations are determined, together with the
standard errors of estimates. Comparisons are made with corresponding figures
for monthly median values derived from the same data sets.
Key words. Electromagnetics (Guided waves) ·
Ionosphere (Ionospheric disturbances) · Radio Science (Radio wave propagation) |
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