Abstract
We show that the well-known effect, or anticorrelation between the peak in sunspot number of a cycle and the time from minimum to reach that peak, is not present in sunspot area data averaged in the same way. With a 13-rotation Gaussian running average applied to both sunspot number and sunspot area, we find the correlation between cycle rise time and cycle peak is r = − 0.71 for sunspot number and r = 10−4 for sunspot area. Hathaway et al. previously showed that the Waldmeier effect is much weaker (r = − 0.34) in sunspot group number. Thus the Waldmeier effect may be specific to only Wolf sunspot number.
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