Solar output is fairly constant, but the earth's Orbit is Not.
It changes angles/tilt relative to the sun and those orbital changes (Milankovich cycles) in absorbtion are the CAUSE of peaks and troughs in he historical graphs of Ice ages and interglacials.
Ocean currents just an Effect.
Solar output is has been Constant in Our present very short SPIKE in Temp, BUT
It is far too fast for orbital motion to be the cause.
We know the cause is the explosion of human GHG emissions Trapping more of that sunlight that would otherwise be reflected back out into space.
Ocean Currents are a lagging Effect, Not the Cause.
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