You might want to find a better link.

That specific article, while interesting, doesn't mention the sun's magnetic field once.

Nor the sun, nor magnetic fields.

The CLOUD experiment found that sulfuric acid, nitric acid, and ammonia combine in the upper atmosphere to form particles that seed clouds, driven by chemicals and human activities, without mentioning the Sun's magnetic pole reversal.

While certainly solar activity affects the atmosphere broadly, such as ozone levels influenced by UV radiation and solar particles, the CLOUD study writeup here doesn’t show a direct impact on the specific aerosol-forming reactions.

So, while solar activity influences some chemistry such as ozone formation, it’s unclear if it affects the reactions described by CLOUD.

Without affecting weather patterns?