Yes Virginia, There Are Climatic Earth Cycles

by Lady J. Coulter

I realize that climate science is a difficult and foreign subject to understand for many of us. What should we believe, IPCC and the scientists on their payroll or years of research performed by thousands of qualified, unbiased scientists who have studied climate changes over millennia? For example,

ScienceDaily (Apr. 21, 2009) wrote:
New research from the Niels Bohr Institute indicates that there can be changes in the CO2 levels in the atmosphere that suddenly reach a critical turning point and with that trigger the dramatic climate changes.

The Earth’s climate is essentially controlled by three different cycles (Milankovitch). All three cycles are caused by the pull of the other planets in the solar system on the Earth, and one could say that they control the Earth’s climate by causing changes in the Sun’s radiation.

1: The Earth’s orbit around the sun is not completely circular, but slightly elliptical. The orbit is ‘elastic’ and contracts and expands in a cycle of 100.000 years. And the closer we are to the Sun, the more solar radiation and the more heat we receive.
2: The Earth’s axis has a tilt in relation to the Sun and that is why we have summer and winter. But the tilt is not constant, it swings between 22 degrees and 24 degrees, and the greater the tilt, the greater the difference between summer and winter. This cycle takes 40.000 years.

3: The Earth rotates around on its axis like a top – this gives day and night. But due to the tilt of the Earth and the elliptical orbit the direction changes with a cycle of 20.000 years. This results in variation in to whether the Earth is nearest the Sun during the summer or during the winter.

Solar radiation varies in the two hemispheres during the summer due to these cycles in the Earth’s tilt and the elliptical orbit and this has profound implications for whether ice caps can build up in the northern hemisphere, where the largest land areas are.

ScienceDaily (Feb. 18, 2008): The Earth’s orbital behaviors are responsible for more than just presenting us with a leap year every four years. According to Michael E. Wysession, Ph.D., associate professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, parameters such as planetary gravitational attractions, the Earth’s elliptical orbit around the sun and the degree of tilt of our planet’s axis with respect to its path around the sun, have implications for climate change and the advent of ice ages.
“All planets travel in an ellipse around the sun, but the shape of that ellipse oscillates,” he explains. “When the Earth’s orbit is more elliptical, the planet spends more time farther away from the sun, and the Earth gets less sunlight over the course of the year. These periods of more-elliptical orbits are separated by about 100,000 years. Ice ages occur about every 100,000 years, and they line up exactly with this change in the Earth’s elliptical shape.”
“Seasons occur because in January, for instance, the North Pole points away from the sun, so the southern hemisphere gets more direct sunlight,” Wysession says. “Six months later, that will be reversed. In terms of climate change, this has an impact because land heats up much more quickly than water, five times more quickly. The northern hemisphere has most of the land on Earth; the southern has most of the water. On January 3 or 4 (it varies) the Earth is at its closest point to the sun (the perihelion), but because water heats up so slowly, it doesn’t make as much difference in temperature in the southern hemisphere as it otherwise might.

“In the northern hemisphere summer, despite the Earth being farther away from the sun, land heats up much more quickly than the southern hemisphere’s water, and heats up about the same amount consistently. The two hemispheres end up buffering the climate swing, producing less severe winters than we would have otherwise.”
“Orbital parameters of Earth, the sun and moon and the planets have great effects on ice ages and other climatic changes,” he says. “Those major events are driven by very small changes in the planetary orbital functions.”

ScienceDaily (June 7, 2002) — HANOVER, N.H. – Thanks to new calculations by a Dartmouth geochemist, scientists are now looking at the earth’s climate history in a new light. Mukul Sharma, Assistant Professor of Earth Sciences at Dartmouth, examined existing sets of geophysical data and noticed something remarkable: the sun’s magnetic activity is varying in 100,000-year cycles, a much longer time span than previously thought, and this solar activity, in turn, may likely cause the 100,000-year climate cycles on earth. This research helps scientists understand past climate trends and prepare for future ones.
Published in the June 10 issue of Earth and Planetary Science Letters (Elsevier, volume 199, issues 3-4), Sharma’s study combined data on the varying production rates of beryllium 10, an isotope found on earth produced when high-energy galactic cosmic rays bombard our atmosphere, and data on the past variations in the earth’s magnetic field intensity.
Over the last 1 million years, the earth’s climate record has revealed a 100,000-year cycle oscillating between relatively cold and warm conditions, and Sharma’s data on the sun’s magnetic activity corresponded to the earth’s ice age history.
Sharma’s calculations suggest that when the sun is magnetically more active, the earth experiences a warmer climate, and vice versa, when the sun is magnetically less active, there is a glacial period. Right now, the earth is in an interglacial period (in between ice ages) that began about 11,000 years ago, and as expected, this is also a time when the estimated solar activity appears to be high.

National Center for Policy Analysis wrote September 30, 2005:
THE PHYSICAL EVIDENCE OF EARTH’S UNSTOPPABLE 1,500-YEAR CLIMATE CYCLE

Human activities have little to do with the Earth’s current warming trend, according to a study published by the National Center for Policy Analysis (NCPA). In fact, S. Fred Singer (University of Virginia) and Dennis Avery (Hudson Institute) conclude that global warming and cooling seem to be part of a 1,500-year cycle of moderate temperature swings.

Scientists got the first unequivocal evidence of a continuing moderate natural climate cycle in the 1980s, when Willi Dansgaard of Denmark and Hans Oeschger of Switzerland first saw two mile-long ice cores from Greenland representing 250,000 years of Earth’s frozen, layered climate history. From their initial examination, Dansgaard and Oeschger estimated the smaller temperature cycles at 2,550 years. Subsequent research shortened the estimated length of the cycles to 1,500 years (plus or minus 500 years).

According to the authors:

* An ice core from the Antarctic’s Vostok Glacier — at the other end of the world from Greenland — showed the same 1,500-year cycle through its 400,000-year length.
* The ice-core findings correlated with known glacier advances and retreats in northern Europe.
* Independent data in a seabed sediment core from the Atlantic Ocean west of Ireland, reported in 1997, showed nine of the 1,500-year cycles in the last 12,000 years.

Considered collectively, there is clear and convincing evidence of a 1,500-year climate cycle. And if the current warming trend is part of an entirely natural cycle, as Singer and Avery conclude, then actions to prevent further warming would be futile, could impose substantial costs upon the global economy and lessen the ability of the world’s peoples to adapt to the impacts of climate change.

Source: S. Fred Singer and Dennis T. Avery, “The Physical Evidence of Earth’s Unstoppable 1,500-Year Climate Cycle,” National Center for Policy Analysis, Policy Report No. 279, September 29, 2005

Now I tend to be a common sense person and I base my decisions on facts not fantasy. This planet has gone through many climatic changes over the ages and to believe that we, a small ink blot in comparison, have the power to alter the climate is ridiculous! Only God has that power.
Now I admit that some things we do, can and does pollute or poison the Earth. But I can not believe that anything we do could possibly affect the planet in such an enormous and dramatic way! If what they say is true, then what caused the Medieval Warming period 1000 years ago which was much warmer than it is now? Did they have hidden factories that we haven’t unearthed yet? Or gas powered horses? Oh, I know…it must have been the alien space ships!
And if you want to lower the CO2 levels, I have a crazy idea. Why don’t you PLANT MORE TREES! And quit destroying the Amazon rainforest. I hear that trees just love CO2. Now that is a common sense solution!