Uh, no. Charged particles vs photons. Photons not affected by magnetic fields. Now, as more charged particles penetrate the atmosphere, more clouds are formed due to charge nucleation, so fewer photons reach the ground and warm the earth. Instead, the upper atmosphere gets warmer.
Thanks for your corrections and instruction regarding light and cosmic rays.
Found the following from Oct. 2019, sounds like it is a request for research funding:
https://gtr.ukri.org/projects?ref=NE%2FJ018058%2F1
Excerpt:
“Some studies have found correlations between changes in the Earth’s magnetic field and climate parameters. However, the responsible mechanism for this link has remained elusive. This project will investigate one possible pathway by which the Earth’s magnetic field could affect climate, namely the downward propagation of changes initiated in the upper atmosphere (~100-500 km). This is a novel idea that has not been investigated before.”
(Hmm - Warthog - either their idea isn’t so novel - or you are one of these guys!)