2013-07-01
SIDC graphic, annotation added TNC
SC (red dash-dotted) : classical Standard-Curves prediction method, based on a least-square interpolation of Waldmeier’s set of standard solar cycle profiles;
CM (red dashes) : Combined Method (K.Denkmayr and P. Cugnon), based on a regression technique combining a geomagnetic precursor (aa index) with a least-square fit to the actual profiles of the past 24 solar cycles.
http://sidc.oma.be/sunspot-index-graphics/wolfjmms.php
One or other or both will be wrong.
SIDC have recently altered their sunspot graphics pages. A divergent of sunspot model prediction is being shown. The phrase ‘All models are wrong, some are useful’ comes to mind.
Tim
