Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newa...12...29d&link_type=abstract
New Astronomy, Volume 12, Issue 1, p. 29-32.
Astronomy and Astrophysics
Astronomy
16
96.60.-J, 96.60.Q, 96.60.Qd
Scientific paper
A weak 5-cycle periodicity (r = -0.64) is found in the maximum amplitudes of the modern era sunspot cycles (11 23), slightly stronger than the 8-cycle (Gleissberg) periodicity (r = 0.60). We propose a new parameter called ‘effective duration’, defined as the total sunspot numbers in a cycle divided by the maximum amplitude. This parameter has two advantages: one is that it is almost independent of the exact definition of minimum timing; another is that the maximum amplitude is found to be highly correlated (r = 0.86) with this parameter five cycles before, when applied to the smoothed monthly mean sunspot numbers in modern era. Implied is that this parameter carries some information of the amplitude five cycles later, and may become one of the parameters to study solar activity and the theory of solar dynamo. With the relationship above, the amplitude of cycle 24 is estimated to be 115.7 ± 19.7, where the error is the standard error.
No associations
LandOfFree
A new solar activity parameter and the strength of 5-cycle periodicity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new solar activity parameter and the strength of 5-cycle periodicity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new solar activity parameter and the strength of 5-cycle periodicity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1440295