Responding to the CO2 Coalition's "Fact #18" on Milankovich Cycles
CO2 Coalition 's " Fact #18 " is also mostly trivial save for an implication they make from it that is really just a non sequitur . The Milankovich Cycles (sometimes stated simply as orbital cycles) have to do with cyclical variability in the shape of the Earth's orbit or the tilt and wobble of the Earth's axis. They are: Eccentricity - cyclical variability in the shape of the Earth's orbit. Due to the gravitational pull of Jupiter and Saturn, the shape of the Earth's orbit becomes more circular (eccentricity of 0.0034) to more elliptical (eccentricity of 0.058) every 100,000 years. Obliquity - cyclical variability in the tilt of the Earth's axis, which varies between 22.1 and 24.5 degrees with respect to the Earth's orbital plane every 41,000 years. The more tilted the Earth's axis of rotation, the more extreme seasonal variability becomes. Each hemisphere experiences hotter summers and colder winters. Precession - cyclical variability in...