9 May 2020

Have we passed the solar minimum?

At least one forecast seems quite confident that we have now passed through the sunspot minimum and are starting the climb to the next peak in a few years' time. This forecast has been pointing to an upturn for some while now. Some forecasts point to a much later minimum.

Unless things have changed, the last forecast suggested a peak similar in magnitude to cycle 24. This was quite a weak peak, but at least a peak and not a Maunder Minimum. Back in the 1600s there were virtually no sunspots for 70 years.

At the moment, it is hard to see the signs! Maybe in 6 months we can be more confident.

See https://www.solen.info/solar/images/cycles23_24.png
See http://www.arrl.org/news/noaa-updates-solar-cycle-25-prediction


No comments: