Earth's orbital axis during so called global warming re: 800 AD when Eric the Red and Leif Ericson went to a new Farmland, Greenland . So called because it was Green, Re: So called Global Warming made a Richer Climate for Agriculture.
Today presently, Reports of Sealife shifting habitat to more warm Sea Conditions North of Normal Fishing Grounds more Northern Locations then previously Known.
Earth's orbital axis at another type of climatic condition when the earth's axis has rotated, probably centuries later when our inaccurate calendar ha shifted the seasons three months after three and a half centuries of leap days every four years, giving shift of three full months seasonal shift, relative to present seasonal times.
PRECESSION
and other fluctuations in Earth's Orbit
Consequences of changes in Earths Position in space in its orbital path, due to Earth's rotational axis and its Precessional cycles.
One period of Orbital Precession of Earth's Orbital axis is 26,000 Years.
This One is caused by the Moon and the Sun's Gravitational Pull on Earth.
Another is a 71,000 year cycle caused by the Other Planets in the Solar System.
Due to the Planets, Earth's Orbital Axis Precesses about the Sun about every 71,000 years. Together these cause an oscillation in the Ellipticity of Earth's Orbit.
The 26,000 year Spin-axis Precession of Earth interacts with its 71,000 year Orbital precession, causing an additional 41,000 year Oscillation in the Tilt of Earth's Axis of about 1.3 degrees from its average value of 23.3 degrees.
The cycle length is not constant and depends on positions of the planets through time.
The Tilt maximum 24.2 degrees occurred approximately 95,000 years ago.
The Tilt decreased since then.
The rate rate of change of TIlt is now near Maximum.
The most obvious consequence of this Rate of Change of Tilt results in movement of Tropics of Cancer and Capricorn MOVING TOWARD THE EQUATOR.
The Movement of the Tropics toward the Equator is Greater then 14 meters per year.
This Actual Tropics in 1908 at the date of Publishing my Source at about 1 kilometer closer to Equator.
The Arctic Circles likewise have moved towards the Respective Poles as well.
Temperate Zones gain about 1550 Square Kilometers each Year.
postato da: trescx alle ore 22:11 | Permalink | commenti Today presently, Reports of Sealife shifting habitat to more warm Sea Conditions North of Normal Fishing Grounds more Northern Locations then previously Known.
Earth's orbital axis at another type of climatic condition when the earth's axis has rotated, probably centuries later when our inaccurate calendar ha shifted the seasons three months after three and a half centuries of leap days every four years, giving shift of three full months seasonal shift, relative to present seasonal times.
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