There is, but the effect you’re thinking of - if I’m guessing your thought right! - is the influence of the sun’s magnetic field/solar wind on the earth’s climate.
Greater solar wind -> greater magnetic flux around earth -> more shielding of the earth from cosmic radiation -> less cosmic ray interactions in the atmosphere -> fewer clouds -> greater solar (visible & IR & UV) insolation -> more heat buildup in the earth’s atmosphere & ground -> hotter temperatures.
But, while this explains the earth’s changes in temperature, it doesn’t explain WHY the sun’s magnetic fields change periodically.
THIS article tries to summarize the reason for the change in sun’s magnetic fields/solar storms/solar flares by crediting Jupiter and Saturn’s gravitational pull on the “triangle” of the sun + Jupiter + Saturn. If the center of gravity of the three (plus the smaller/closer planets) ISN’T at the center of the sun’s magnetic “sphere” then the sun’s rotating magnetic field will be distorted by eccentric gravitational forces every solar “day” (8 hours ??) and is likely to be distorted far into space.
There’s a lot we don’t know. We don’t know what we know and we don’t even know what we don’t know. What we think we know will probably blindside us one fine day.