Publications

In this work, the evolution of the relationship between Solar Cycle Length of solar cycle n (SCL_n) and Solar Cycle Amplitude of the solar cycle n + 1 (SCAn+1) is studied by using the R_Z and R_G sunspot numbers. We conclude that this relationship is only strongly significant in a statistical sense during the first half of the historical record of R_Z sunspot number whereas it is considerably less significant for the R_G sunspot number. In this sense we assert that these simple lagged relationships should be avoided as a valid method to predict the following solar activity amplitude.