Further study of fOF2 and M(3000)F2 in different solar cycles

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P. A. Bradley

Abstract

Measured monthly median fOF2 and M(3000)F2 for Slough over six solar cycles from 1932 onwards are examined for a selection of hours and months. Data are shown as a function of twelve-monthly smoothed sunspot number. Comparisons are made for the different solar cycles and for the rising and falling halves of each cycle. Measurements for individual cycles are compared with best-fit parabolic regression lines over all cycles to investigate possible systematic long-term effects.

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1.
Bradley PA. Further study of fOF2 and M(3000)F2 in different solar cycles. Ann. Geophys. [Internet]. 1994Nov.25 [cited 2021Sep.17];37(2). Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4227
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