12.29.2019

Growing Degree Days predict Solar Cycle

https://swroc.cfans.umn.edu/weather/gdd-graphs

https://www.spaceweatherlive.com/en/solar-activity/solar-cycle

If you compare the above pages you will see that the minimum of any solar cycle has a spike in growing degree days (gdd) and that there is another minimum right before the next cycle starts.  So since 2018 was a spike for growing degree days (minimum of the solar cycle) and 2019 was low for growing degree days, it looks like the new solar cycle 25 will begin sometime in 2020.

Also IceAgeFarmer in his 50k livestream mentioned that galactic cosmic rays peak 18-24 monhts after minumum so that may be related.

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