cycle forecast and planetary correlations
Jan Benestad at www.sibet.org
Analysis of solar cycle
First a look at the three main cycles
Here is monthly sunspot number since year 1700, seen from
Jupiter-Saturn conjunctions and oppositions.
We see that high solar activity is higher before a
conjunction/opposition, and lower after.
Next is the Jupiter cycle. Here the distribution is more unclear, but
this cycle is more helpful than what we see at the first look (after
all the sunspot-cycle is mainly about Jupiter).
And the last one is the tidal cycle, of allignments of
Jupiter+Venus+Earth. Notice the ~2 year interval that ALLWAYS has solar
activity. Also wee see an interval of low activity (the exception is
SC4). Allthough this is a powerful cycle (the strongest), I so far find
it as the least helpful one in explaining/predicting solar cycles...
Step 2 is examing each of the three cycles, and divide them into
I will show that the solar cycle can be in or out of phase with the
10yr JuSa cycle. So we have two groups of cycles (or 4 groups when we
look more in detail).
There are 3 groups in the 12yr Jupiter cycle.
And the 11yr tidal cycle has 2 or 3 groups (not sure how useful they
Donations will be a great motivator to update/add material :)