- Sep 16, 2012
- 59,659
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Dude.Wow, really?
So the scientists that discovered and taught you that, who are now sounding the alarm on anthropogenic climate change...
Have you told them?!?! Won't they be surprised!
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This is, like, common knowledge.
![pinkygirly :pinkygirly: :pinkygirly:](/styles/smilies/new/pinkygirly.gif)
What causes glacial–interglacial cycles?
". . Variations in Earth's orbit through time have changed the amount of solar radiation Earth receives in each season. Interglacial periods tend to happen during times of more intense summer solar radiation in the Northern Hemisphere. These glacial–interglacial cycles have waxed and waned throughout the Quaternary Period (the past 2.6 million years). Since the middle Quaternary, glacial–interglacial cycles have had a frequency of about 100,000 years (Lisiecki and Raymo 2005). In the solar radiation time series, cycles of this length (known as “eccentricity”) are present but are weaker than cycles lasting about 23,000 years (which are called “precession of the equinoxes”).
Glacial-Interglacial Cycles | National Centers for Environmental Information (NCEI) formerly known as National Climatic Data Center (NCDC)
Feedbacks related to ice and atmospheric carbon dioxide caused abrupt warming during the transition from glacial to interglacial conditions.
![glacial-interglacial.jpg](https://www.ncdc.noaa.gov/sites/default/files/styles/716px_width/public/glacial-interglacial.jpg?itok=19bwFcU9)