Solar Activity Dependence on Lunar Daily Variations of the Ionopheric Total Electron Content Near the Equatorial Anomaly Crest


Solar activity dependence on the lunar daily variations of ionospheric total electron content at the equatorial anomaly crest region was studied using the Chapman-Miller method by use of the total electron content data observed at Lunping from March 4, 1977 to December 31, 1989. The result shows that the amplitudes of lunar daily variations increase with increasing sunspot numbers but become saturated when the sunspot number becomes larger than about 100.

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