Homework4 glacial cycles

Homework4 glacial cycles - Alyssa Griffith Homework #4...

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Alyssa Griffith Homework #4 Global Warming Combinations of factors interact to drive the earth’s climate from the glacial mode of operation to the interglacial mode. These factors include: the Earth’s orbit around the Sun, the biological pump, the global ocean conveyor belt, and multiple “greenhouse” gases. Although extremely dissimilar factors, they all play a part in the Earth’s climate mode change. The Earth’s orbit around the Sun is a quintessential part of the sporadic nature of Earth’s glacial cycles. Variations in the Earth’s three dominant cycles, which are eccentricity, axial tilt and procession, better known as The Milankovitch Cycles, create alterations in the seasonality of solar radiation that reaches Earth’s surface. Solar radiation is either increased or decreased as a result of the fluctuations in the cycles. During glacial periods, the axial tilt is at a minimum level and the orbital eccentricity is at a maximum level. A Lower period of radiation hits the northern hemisphere during the summer, and the Earth needs minimum tilt
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Homework4 glacial cycles - Alyssa Griffith Homework #4...

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