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Combined Effects
The change between 96K and 41K ice ages
- Considered by some to be a mystery
- When the 41K, 96K and 500K forcing are combined
- One can cancel or enhance the other
- 96K is weaker, 500K is weakest, 41K is dominant
- The pattern is clearly an interference pattern
- We are entering a new age of 41K ice ages
- Evidenced by current weaker, but longer interglacial
- Currently approaching 500K peak
- 41K and 96K peaks are separated by about 30K years
- Stretching out the current interglacial
Notes:
All of the periodic influences extracted by the auto correlation analysis are clearly identified with periodic variability in the Earth's orbit and axis. As they interfere with each other, the combined effect can become quite large or even reduced to zero. The alignment of these effects can be seen in the relatively strong interglacial periods 100K, 400K and 700K years ago when the peaks of 2 or more of these forcing influences aligned. In addition, the length, depth and spacing of glacial epochs is solely dependent on the phase relationships between the individual effects.
Recently, the peaks of all of these influences have been spaced out from between 5 and 30K years. This has the effect of lengthening the current interglacial and keeping it a little cooler than past ones where 2 more more forcing peaks happened to be more or less coincident.