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There are a few incorrect assumptions in your post, so it is difficult to answer as asked. But I can address the misconceptions. 1. The seasons are not caused by the distance from the sun The seasons are caused by the 23.5° tilt in Earth's axis. When the Northern Hemisphere is tilted towards the sun (summer), the Southern Hemisphere is simultaneously tilted ...


5

Disclaimer: Most of what is written here is based highly on theory and speculation. Voyager 2 is the one and only trip we have taken to Neptune and most of these theories are built upon the data it has sent back. Leave large room for error Is Neptune windy? Before we start answering why Neptune is windy we should first specify if Neptune is even windy in ...


5

The 5 million kilometer variation in distance to the Sun may seem like a lot, 5 million km is a large distance, but it doesn't affect Earth's weather as much as the axial tilt. A 3% variation in distance leads to an ~7% variation in the intensity of solar radiation reaching Earth, give or take. But consider the variations from Earth's axial tilt, and here I ...


3

I suspect you're thinking that we'd have a summer when the northern hemisphere, for example, is tilted toward the Sun, and a second summer during the perihelion, when the Earth is closest to the Sun. For one thing, the timing doesn't work; the perihelion takes place in early January, close to the northern midwinter. That probably moderates the effects of ...


2

There are two factors here. One is that the 23 degrees tilt is way more important than the tiny 5 million Km (remember that that's only 0.033 AU). Proof for that is that when it is Summer in the north it is winter in the south, regardless of the distance. The other is that if there were no tilt, we would have one very light summer and one very light winter ...


2

The presentation linked to seems to primarily discuss General Circulation Models which are solutions to the equations of fluid dynamics which predict the behavior of a planet's atmosphere and are component of more complete Global Climate Models, confusingly both are GCMs. Spectral data on exoplanets is extremely limited to date and poorly constrains the ...


1

This paper seems to be discussing what you've asked: http://www.sciencemag.org/content/297/5585/1287.full. The next ice age is expected to begin about 50,000 years from now. However, I think it's still debatable how accurate the predictions of Milankovitch cycles are, and how much of an effect humans are likely to have on this earth system.


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It is because the 23 degrees tilt of the earth and the ellipse orbit of the earth around the sun. If you make an equation with all the variables we have here 23 degrees tilt of earth Ellipse orbit of the earth around the sun Earth speed around itself Earth orbital speed around the sun Distance between the earth and the sun So you will note a variation ...



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