- The sun goes through 11 year sun spot cycles. These cycles affect the amount of solar radiation that the earth receives, but the effect on our climate is minimal.
- A Grand Solar Minimum cycle occurs about every 200-400 years.
- The Little Ice Age went from the 16th to the 19th centuries, with particularly cold periods around 1650, 1770, and 1850.
- The Maunder Minimum was a period from 1645 to 1715 when sunspots were extremely rare. This coincides with a period of low temperatures.
- The sun has four magnetic fields. In the last Little Ice Age, two of those fields were out of phase. At this point, all four of the sun’s magnetic fields appear to be going out of phase.
Summary: While climate change prediction based on changes in the sun is far from an exact science. It appears that a period of colder temperatures may be upon us – possibly much colder.
SpaceWeather.com – SEP 28, 2018:
THE CHILL OF SOLAR MINIMUM: The sun is entering one of the deepest Solar Minima of the Space Age. Sunspots have been absent for most of 2018, and the sun’s ultraviolet output has sharply dropped. New research shows that Earth’s upper atmosphere is responding.
“We see a cooling trend,” says Martin Mlynczak of NASA’s Langley Research Center. “High above Earth’s surface near the edge of space, our atmosphere is losing heat energy. If current trends continue, the upper atmosphere could soon set a Space Age record for cold.”
Links for more information: