What modulates our Sun? The majority of science work on the principle that the Sun is self modulating and each solar cycle is a product of a random number generator. There are others that suspect the Sun is modulated by the planets with a special emphasis on Uranus & Neptune. Thanks to Carl Smith who has recently left us we have new knowledge that significantly adds to Jose, Landscheidt & Charvàtovà's work.

Geoff Sharp

A Solar Step Change during late 2005?

ap step change 2005

Anthony Watts from WUWT has been harping on about the AP index step change during late 2005 nearly as long as me in regard to my own solar theory. But there are other events and data that seem to correspond very closely.

I have commented on the solar Angular Momentum change that occurs at the same time previously, but today while researching the "L&P Effect" I came across some amazing graphs. The graphs come from a presentation from Nagovitsyn, Pevtsov and Livingston (Bill) that I think displays Russian CRAO spot data that shows all sunspot size groups also experience a step change around late 2005.

livingston and Penn L&P effect

All four spot sizes reverse their current trends at late 2005 as if a switch was flipped.

Now lets look further at the AM and solar path graphs of the same time frame.


Late 2005 the Sun enters its perturbed orbit about the SSB, this orbit is unusual and only occurs during solar slowdown. UPDATE Nov 14 2012: Normally when the solar path begins to enter the inner loop the trajectory would be towards the SSB, late 2005 the orbit is actually moving away from the SSB which is now recognized as the key element in differentiating disordered loops. When the outgoing loop of the disordered orbit is outside of the solar radius distance substantial solar slowdown occurs!

SC20 which was a weak cycle had a AM perturbation that was late and weak, the inner loop path did not exceed the radius of the Sun measured from the SSB. Before that we need to go to the Dalton Minimum cycles. If we look at Carl's graph the unusual solar perturbation is also seen around late 2005.

amp event

The AMP event shown above is what caused the orbit change, too many coincidences going on here perhaps?

Many thanks go to Carl's brother Dave for providing the Domain, Server and Software.