The 10.7-cm Solar Flux and the 26-Month Oscillation
Open Access
- 1 May 1966
- journal article
- Published by American Meteorological Society in Journal of the Atmospheric Sciences
- Vol. 23 (3) , 314-319
- https://doi.org/10.1175/1520-0469(1966)023<0314:tcsfat>2.0.co;2
Abstract
The 10.7-cm solar radio flux is considered to be highly correlated with solar extreme ultraviolet radiation, thermospheric temperatures, sunspots, and the 27-day and 11-year solar cycles. To investigate the possibility of ultraviolet radiation being a cause of the quasi-biennial oscillation in tropical stratospheric winds and temperatures, the daily values of 10.7-cm flux were subjected to a non-linear, curve-fitting analysis to determine the major component sinusoidal frequencies of the time series. No evidence was found for a period near 26 months; hence, to the extent that extended ultraviolet 10-cm flux relationship is valid, ultraviolet insolation does not appear to vary with a quasi-biennial oscillation.Keywords
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