How does this conclusion explain the eruption of this same volcano in the 1870s? It rather ignores this.
It really does not address global warming in the anthropological sense. This seems to be an "apparent" assumption which ignores the history and facts.
It seems a stretch to think one degree average
difference in atmospheric temperature would have affect on the movement and change in the earth core temperature or its eruptions of the liquid core. Rather it is more real that such eruptions do have direct affect on the average atmospheric temperature and that this would be more in sequence with the cycles and affects on the earth by its relationship and gravitational changes by the solar and galactic systems.
The movement in polarity and change in the core is more likely related to the greater cycles and evolution of the earth then anything we do. If anything, the release of CO2 by burning will have a cooling result after a short warming affect. From study of how the crust of the earth was created, originally the atmosphere was very CO2 rich, causing rain to cool the surface. Our situation now is a much smaller blip by comparison, but in a grand scale by our own life time, in comparison to the life time of the earth.
Though we could assert that global temperature will rise in a hockey stick way, and has, we also have to consider how the atmosphere reacts. In essence the mechanism of atmosphere will change to a rain cycle, and initiate cooling as it has historically. For the most part, this points to a man made ice age.
The sulphur that this volcano puts in the air will reflect the sun's radiation, and in fact cause cooling. This is as much a greenhouse gas as any other but has the opposite affect of CO2 and Methane. So again, if this article and its apparent conclusions are correct, the result is the same... global cooling as result.
Unlike some assumptions, ash is not a good thing for crops. At least not right away. It is however in the long run. (very long
Could these changes be related? Eruption, earth quakes? and atmosphere? The linking of ice to this cycle may be direct, but could also be cause and affect.
It is good that people are asking these questions, and of the things we do know, this time of change is coinciding with the observations made in the earth and it's association in space and alignment to other planets and the sun. Will this continue?
Will the changes become a wider scope than we might understand? I think most likely ... yes.