Over on WUWT, there was an interesting comment burried down in yet another long discussion thread.
I’m pulling it up here as I found it interesting, but a little unclear, and doubt that it will be clarified there.
August 16, 2015 at 12:04 pm Edit
Each point is an orbital subtraction calculation of the mean anomalies of four planets Jupiter, Mars, Earth and Venus, taken on the 1st of January every two years from 1900-2012..
The shape of the orbital subtraction points resemble the shape of the ssn record.
I’m not clear on what an “orbital subtraction point” might be, and don’t have time to chase it down right now, but thought maybe someone could enlighten (or maybe I can entice ‘Sparks’ into an expanded bit of text here).
I visualize it as taking some kind of baseline starting point (maybe a line toward the sun on the sun side?) and then “subtracting” the degrees away from it for each planet and making a net graph? A formula would have been helpful… Also an A/B of actual sunspots vs the plot… Still, the graph that is, is very interesting…