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10 cards from this deck
Milankovitch cycles, sun spot activity, volcanic eruptions
Changes in Earth's movement & position relative to the Sun
100,000 yrs; orbital shape (circular to elliptical)
23,000 yrs; wobble of Earth's axis (like a spinning top)
40,000 yrs; axial tilt varies between 21.5° and 24.5°
Approximately 23.5°
11-year cycle
Increased solar activity; Sun releases MORE energy overall
Short-term cooling (several yrs); ash/dust block solar radiation
Dropped global temps by approx. 0.5°C for about 2 years
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