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Predicting the main parameters of solar cycle 24 by the number of spotless days in the previous minimum
Authors:A I Khlystov  B V Somov
Institution:1. Sternberg State Astronomical Institute, Moscow State University, Moscow, 119991, Russia
Abstract:An attempt was made to connect the number of spotless days in previous minimums of solar cycles with the main characteristics of the following cycles: height, total length, and length of the rise branch. According to the value of the sum of spotless days in the minimum of cycle 23 ΣDT0 = 800 (July 2010), the following characteristics of cycle 24 were obtained: the beginning is 2009.0 (January 2009), the length of the rise branch RW = 4.8 years, the date of the maximum is 2013.8 (October 2013), Wolf’s number in the maximum WM= 63, the length of the decline branch DW = 7.8 years, the total length DTmm = 12.6 years, and the end is 2021.6 (July 2021).
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