Abstract
Instantaneous predictions of the maximum monthly smoothed sunspot number in solar cycle 23 have been made with a linear regressive model, which gives the predicted maximum value as a function of the smoothed sunspot numbers corresponding to a given month from the minimum in all preceding cycles. These predictions indicate that the intensity of solar activity in the current cycle will be at an average level.
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Guiqing, Z., Huaning, W. Prediction of maximum sunspot number in solar cycle 23. Solar Physics 188, 397–400 (1999). https://doi.org/10.1023/A:1005282419046
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DOI: https://doi.org/10.1023/A:1005282419046