Below is my annotated version of NOAA’s monthly graph showing the amount of sunspot activity on the Earth-facing hemisphere of the Sun.
The graph above has been modified to show the predictions of the solar science community for both the previous solar maximum as well as the ongoing maximum.
- The green curves show the community’s two original predictions from April 2007 for the previous maximum, with half the scientists predicting a very strong maximum and half predicting a weak one.
- The blue curve is their revised May 2009 prediction.
- The red curve is the new prediction, first posted by NOAA in April 2020.
Second, and more egregious, these scientists added a new prediction — the blue line surrounded by a multi-colored range indicating margin of error — suggesting they now think the solar maximum is over and that the Sun is starting its ramp down to minimum.