Book Creator

Higher Global Climate Change

by Mr Bell

Pages 6 and 7 of 37

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Milankovitch Cycles
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Eccentricity
This is the change in the shape of the earth's orbit around the sun. 
Over time the Earth will be closer to, or further away from the Sun altering the amount of energy we receive.
Occurs over 97,000 years.
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Milankovitch Cycles
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Axial Precession
This is a change in how close the Earth is to the Sun when Summer occurs. When the Earth is further away from the Sun in our Summer (Northern Hemisphere) we have cooler summers allowing snow to last for longer and possibly develop into glacial ice. This increases the Albedo effect.
Occurs over a 23,000 year cycle.
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