If Not Fossil Fuels Or Mankind, What DOES Cause Climate Change
Glad You Asked. The Long Term cause of World Wide Climate Change is the
Variations in Earth Orbit as it makes it way around the
Sun. Other factors influence global climate change in the short term (meaning anywhere from a few years to a few centuries), but the main influence in global weather i
s Earth's Orbit around the sun and the slight eccentricity of the earth's rotation.
Earth's Orbit Around the SunEarths fluctuation in temperatures
are the result of cyclical changes of Earth's orbit around the sun. (
And Sun Spots) Period. End of story. Right now, we are in the middle of a cycle that, 8,000 years ago, transformed the Sahara into the desert that it is today.
UC Santa Barbara geologist Lorraine Lisiecki (
Article) noticed a pattern that connects the regular changes of the Earth's orbital cycle to changes in the Earth's climate and believes that cycle repeats itself every 100,000 years when world wide glaciation occurs. (Cold periods when glaciers covered large parts of the world).
What Are These Cycles Called?They're Called The Milankovitch Cycles
The episodic nature of the Earth's glacial and interglacial periods within the present Ice Age (the last couple of million years) have been caused primarily by cyclical changes in the Earth's circumnavigation of the Sun. Variations in the Earth's
eccentricity, axial tilt, and precession comprise the three dominant cycles, collectively known as the
Milankovitch Cycles for
Milutin Milankovitch, a Serbian astronomer and mathematician who is generally credited with calculating their magnitude.
Taken in unison, variations in these three cycles creates alterations in the seasonality of solar radiation reaching the Earth's surface. These times of increased or decreased solar radiation directly influence the Earth's climate system, which is why we have had
Glaciers on the Earth in the past AND WILL IN THE FUTURE!
The
Milankovitch Cycles are the reason for global climate change,
not fossil fuels, mankind nor the total amount of solar energy reaching Earth!
These
3 Milankovitch Cycles impact the
seasonality and location of solar energy around the Earth and are the culprit that create the contrasts between the seasons.
Another player that effects Earths climate is
Sun Spots, which causes the Sun to shower Earth with more or less heat.
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