Glaciers are largest every 100,000 years {glaciation era}, when Earth-axis tilt toward Sun minimizes, and perihelion shortest distance from Earth to Sun is in December in Northern Hemisphere, which has more land. Glaciers are smallest every 100,000 years, when Earth-axis tilt toward Sun maximizes, and perihelion shortest distance from Earth to Sun is in June in Northern Hemisphere, which has more land.
Physical Sciences>Earth Science>Planet>Temperature History
5-Earth Science-Planet-Temperature History
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Date Modified: 2022.0224