cooling appears to correlate with BOTH low sun spot periods and weakened magnetic fields during magnetic excursions and reversals. In both cases, cosmic radiation penetrates deeper into the atmosphere, resulting in more water vapor nucleation expressed as increased cloud cover. We are now headed towards a grand solar minimum and a weakening magnetic field. Will this "double whammy" make for sufficient rapid (ie 8-10 year) cooling, to dramatically reduce or eliminate grain production in South Australia, Southern Russia and most of Canada? Is this why Russia annexed Crimea, and why China is plowing the African Savanas, shipping boat loads of food back home?
According to Zharkova's model and hypothesis, we will warm again after about 30 years and revisit and enjoy for a few centuries, the temperatures experienced during the late 1900's. According to Rolf, we are returning to glacial conditions sometime between 2045-2050. A reversal of magnetic field weakening would precede warming, but that might not occur for at least a few decades. If not, Rolf will be proven to be correct, and the magnetic field may stay weak for at least a few 10's of thousands of years and perhaps as much as 100 thousand years. Glacial conditions have lasted for about 100's of thousands of years with about 10,000 year long interglacials, so the current inter glacial period humanity has enjoyed is getting very long in the tooth. Also, with a weakened magnetic field, it is only a matter of time before a CME takes out the electrical grid and all electronic control systems.....Imagine what would happen in large cities and urban areas if suddenly there was no electricity, elevators, lights, subways, refrigeration, running water, working toilets, or heat, and no prospect of it being restored any time soon.
If the Be 10 spikes due to sun spot minimums are removed, perhaps the earth's magnetic excursions and reversals can be modelled, but on what assumptions? A plasma core with concentric electric fields that go in and out of phase, similar to the sun? A solid iron core surrounded by a plasma? This is beyond my math skills. |
