Astronomical Theory of Climate Change
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Description: NOAA Paleoclimatology Program educational material concerning the Milankovitch theory, which explains changes in the seasons as a result of changes in the earth's orbit around the sun.
NOAA Paleoclimatology Program - Orbital Variations and Milankovitch Theory Astronomical Theory of Climate Change The tilt of the earth relative to its plane of travel about the sun is what causes seasons. The hemisphere "pointing toward" the sun is in summer, while the opposite hemisphere is in winter. The earth makes one full orbit around the sun each year. The northern hemisphere is in summer in the left image, while 6 months later, the southern hemisphere has summer, as in the center image. If the earth's axis were "straight up and down" relative to the orbital plane, as in the right-hand image, there would be no seasons, since any given point at the top of the atmosphere would receive the same amount of sun each day of the year.
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| Page title: | NOAA Paleoclimatology Program - Orbital Variations and Milankovitch Theory |
| Keywords: | Paleoclimatology, Orbital Variations, Milankovitch Theory |
| Description: | NOAA Paleoclimatology Program - Orbital Variations and Milankovitch Theory |
| IP-address: | 205.167.25.172 |
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| WHOIS | Status: ACTIVE |
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