What part does earth's perihelion, or nearest point to the sun, play in global warming?

Question

Since earth's orbit around the sun is elliptical, not circular, aren't there regular intervals when earth gets closer to the sun and therefore hotter? Of course, the same would apply to colder periods when earth is farthest from the sun.

Answer 1

nothing....since it's been going on for 4.5 billion years and we go in and out of warm and cold spells coninuosly through all that time.....

sunspots are the major contributer

Answer 2

That is why we have annual seasons, but it has nothing to do with global warming.

The suns energy hits the earth and provides energy to all living things on it, what is left over is reflected back into space, most of it as heat. CO2 is invisible to light but blocks heat. The sun is the "in" door, space is the "out" door. CO2 has nailed the out door shut.

Answer 3

Hi. Yes, but the precession of the Earth's spin axis complicates the issue. http://www.answers.com/main/ntquery?s=precession+of+the+Earth&gwp=13