A new criterion for determining the time of a solar minimum |
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| Authors: | Kh I Abdusamatov |
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| Institution: | 1.Pulkovo Astronomical Observatory,Russian Academy of Sciences,St. Petersburg,Russia |
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| Abstract: | We propose a minimum level of the smoothed values for the solar constant during a period of low sunspot activity as a new
additional criterion for determining the time of a minimum between solar cycles. An indicator for the time of a minimum between
cycles is the time at which a minimum level in the average monthly values of the integral flux of solar radiation smoothed
over thirteen months (when the last four values of the flux are greater than the previous minimum point) is achieved. We successfully
tested the new criterion to determine the time of the previous minima between cycles 21 and 22, 22 and 23, and 23 and 24. |
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