Saturday, May 8, 2010

seven theories of climate change

From the Heartland Institute, a booklet on "Seven Theories of Climate Change"...

Here's a PDF of the full report...

Here's the executive summary...

“At least seven theories of climate change enjoy some support in the scientific community. With the anthropogenic global warming theory now in disrepute, it is a good time to review the other six …”

This booklet identifies seven theories, anthropogenic global warming (AGW) plus six others that do not claim man-made emissions are a major cause of climate change. Each theory is plausible and sheds light on some aspects of climate change that were hidden or obscured by too great a focus on the AGW theory.

The six alternative theories are:

  • Bio-thermostat -- rising temperatures and levels of carbon dioxide (CO2) in the atmosphere trigger biological and chemical responses that have a cooling effect, like a natural thermostat.
  • Cloud formation and albedo -- changes in the formation and albedo of clouds create negative feedbacks that cancel out all or nearly all of the warming effect of higher levels of CO2.
  • Human forcings besides greenhouse gases -- mankind’s greatest influence on climate is not its greenhouse gas emissions, but its transformation of Earth’s surface by clearing forests, irrigating deserts, and building cities.
  • Ocean currents -- global temperature variations over the past century-and-a- half and particularly the past 30 years were due to the slow-down of the ocean’s Thermohaline Circulation (THC).
  • Planetary motion -- natural gravitational and magnetic oscillations of the solar system induced by the planet’s movement through space drive climate change.
  • Solar variability -- changes in the brightness of the sun cause changes in cloud formation, ocean currents, and wind that cause climate to change.


At May 8, 2010 at 3:33 PM , Blogger AmericanVet said...

WattsUpWithThat blog and the Cornwall Alliance have some good information on this. My take on studying the situation is that the AGW people faked their data, had weather stations moved and altered to artificially show higher temperatures and then siphoned out the stations that were not heating up in order to present "proof" of global warming. Meanwhile it seems the globe is actually cooling at the moment.

Also it seems more than one of those processes work together to help balance out temperatures. So the systems of gases and precipitation and cloud cover all react to the power of the sun in a way to keep the Earth within certain parameters.

CO2 readings do coincide with temperature, but CO2 rises behind temperatures, indicating that they are more a reaction than a prediction of heating.


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