Don't get solar particles that make up the solar wind confused with the high energy cosmic rays from the galaxy. The solar partials do tend toward a minimum during solar minimum activity. During those minima the aurora become less spectacular.
Your call for more study is certainly a cause Celeb among climate scientists and others but what we do know points to a warming planet with a high correlation between climate temperature and human activity. It's that correlation that is important even now with the need for more research.
We need the DSCOVR spacecraft to fully measure earth's radiation budget. See http://en.wikipedia.org/wiki/Deep_Space_Climate_Observatory for more information. One may say that Muldur's poster speaks well for DSCOVR as 'The Truth is Out There'; the truth about global warming for sure.