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How do we know that the rapidly increasing cosmic-ray flux, which now affects the Earth's climate evermore, is coming from the Sun, instead of it coming from outside the solar system?
A part of the evidence that tells us that most of the cosmic-ray flux originates at the Sun, is found in historic Berillium-10 ratios. Berillium-10 is a radio isotope that is exclusively produced by cosmic-ray interaction with the Earth's atmosphere.
When one plots the historic Berillium-10 ratios, and compares them with the sunspot numbers, one finds that the Berillium-10 ratios closely follow the sunspot numbers, though inversely. The Berillium-10 ratios are at their highest in-between the solar cycles.
The sunspot numbers , in turn, follow the 11-year solar cycles directly.
This means that the Berillium-10 cycles that we have measured on Earth as an effect of cosmic-ray cycles, closely reflect the cycles of solar activity.
One finds extraordinary evidence in this link, that the cosmic-ray flux that affects the Earth in a big way, is almost exclusively of solar origin.
It is solar cosmic-ray flux, rather than galactic cosmic-ray flux that affects our climate. It is irrational to assume that galactic causes for cosmic-ray flux, follow the Sun's activity cycles. In other words, the cosmic-ray flux that affects the Earth, can only be solar in origin.
The Berillium-10 cycles provide extraordinary measured proof for this amazing fact.
How large the effect of solar cosmic-ray flux can be, is further evident in a reaction experiment that had been continuously repeated over long periods. In one case the result of the experiment spiked tremendously, and then spikes again and again in 24-hour intervals, though with diminishing amplitudes of the spikes.
The 24-hour intervals evidently are related to the rotation of the Earth. If the cause was a coronal hole that enables larger-than-average volumes of cosmic-ray flux to be emitted by the Sun, the the Earth would be affected by this cause in 24-hour intervals. The diminishing spikes, in turn, would reflect the rotation of the Sun, by which the coronal hole would have rotated out of its direct alignment with the Earth.
The experiment not only proves that the Sun emits cosmic-ray flux, but that the Sun emits enormous volumes of it in times of coronal holes opening up in the plasma shell that normally surrounds the Sun and attenuates the solar cosmic-ray flux.
The reaction experiment is described in the book 'Cosmophysical Factors in Stochastic Processes, by Simon H. Shnoll. It is presented here in a LaRouchePac video.
The result of the experiment becomes further significant in the context of the measurements produced by NASA's Voyager-1 spacecraft, as it exited the heliosphere in mid-August in 2012. When Voyager-1 crossed the boundary of the heliosphere, named the Termination Shock, into interstellar space, it provided a measurement of the rate of attenuation of galactic cosmic-ray flux entering the heliosphere. The attenuation was measured to be surprisingly small.
Voyager-1 had measured a mere 35% increase in cosmic-ray flux as it entered into interstellar space. Also note that this measurement was done at a great distance from the Sun where the Termination Shock is located. At this distance, cosmic-ray flux would be primarily galactic in origin. The 35% increase that Voyager measured, is the amount that the termination shock attenuates the galactic cosmic-ray flux. But this is not what affects us on Earth in a significant way.
The 35% amount is minuscule in comparison with the enormously large fluctuations that the reaction experiment has measured. The large difference between the two measurements suggest that for all practical considerations, the cosmic-ray flux that is affecting us on the Earth, originates from the 'nearby' Sun.
Another proof that the vast majority of cosmic-ray flux that affects the Earth originates from the Sun, is evident in measurements of Beryllium ratios in ice cores from Antarctica. We see a large increase of cosmic-ray flux measured in Berillium-10 during the entire duration of the glaciation cycle of the last Ice Age. The measured large increase reflects the 'hibernation' state of the Sun during the glacial periods when the Sun is not surrounded by the dense plasma shell that enables its current high-power state, but which attenuated its cosmic-ray flux.
The dramatic difference in the cosmic-ray volume, comparing the glacial and interglacial periods, which is coinciding precisely with the changing climate conditions, is necessarily caused by the Sun.
The measured phenomena, thereby add one more item of proof to the extraordinary evidence that all cosmic-ray flux that is affecting the Earth, is essentially SOLAR cosmic-ray flux.
This also means that we have to look no further than the Sun, for what is affecting the climate on Earth.
The Sun is affecting us in a big way with increasing volumes of solar cosmic-ray flux, which it generates evermore of, while its dynamics are diminishing. That the galactic cosmic-ray flux has nothing to do with what is affecting us, is evident by the obvious fact that the galactic cosmic flux doesn't adjust itself to solar effects and the Earth's climate cycles.
Galactic cosmic-ray flux is too minuscule in comparison with the the cosmic-ray flux that affects us so deeply that our climate is determined by it.
In addition, we on Earth, are too well shielded from galactic flux, by us being located deep within the heliosphere, in order for the galactic portion of the cosmic-ray flux to have a significant practical effect on us.