David Archibald writes at Watt's Up With That:
This chart compares the development of Solar Cycle 24 with the last de Vries cycle event – the Dalton Minimum. The Solar Cycle 24 ramp up in terms of sunspot number is tracking much the same as that of Solar Cycle 5 but about a year ahead of it. All solar activity indications are for a Dalton Minimum repeat. There has been no development that precludes that outcome.
An update of this chart would be interesting!
Posted by: John Schwartz | March 26, 2012 at 07:45 PM