That doesn even count the heat output of the sun, which changes over time, doesn it?
Those are very small and are not enough to account for all the climate changes that we see. What is causing it is not just the heat of the sun, but emissions from the sun that we don’t see — except with satellites and spacecraft — the so-called solar winds and magnetic fields. Q: What about the things like the wobble of the Earth on its axis and the Earth’s eccentric orbit around the Sun? A: That’s also important, but on a different time scale. For each time scale there is a particular cause. The time scale I’m talking about when I talk about direct solar influences are of the order of decades. The time scales that involve wobbles and orbits of the Earth around the sun involve times scales of 10,000 or 100,000 years. Q: Can you give a synopsis of “Unstoppable Global Warming Every 1,500 Years”? A: Yes. Our book — I co-authored it with Dennis Avery — basically looks at published papers in the peer-reviewed literature by geologists and other paleo-scientists, oceanographers and so on,