The Greenhouse Effect
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Water Vapor Decline Cools the Earth: NASA Satellite Data
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An analysis of NASA satellite data show that water vapor, the most important greenhouse gas, has declined in the upper atmosphere causing a cooling effect that is 16 times greater than the warming effect from man-made greenhouse gas emission during the period 1990 to 2001. Radiosonde data also shows declining upper atmosphere humidity. Both satellite data and radiosonde data confirms no tropical upper atmosphere temperature amplification, contrary to IPCC theory. Four independent data sets prove the IPCC theory wrong. CO2 does not cause significant global warming.
Out-going Longwave Radiation and the Greenhouse Effect
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Using radiosonde data from 1960 to date and a line-by-line radiation code, the normalized greenhouse factor was calculated to have increased by 0.19% over 49 years, which is not significant. Climate sensitivity at doubled CO2 concentration is estimated to be 0.4 oC. This is about 13% of the 3.0 oC estimate by the International Panel on Climate Change.
Evidence for Negative Water Feedback
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Positive linear climate feedback for combined water effects is shown to be incompatible with the Faint Sun Paradox. Earth like planets with large liquid water surfaces can self-regulate temperature for small changes in incident solar radiation. Direct evidence for negative water feedback is found in CRUTEM4 station data by comparing temperature anomalies for arid regions (deserts and polar regions) with those for humid regions (mainly saturated tropics).
The Skeptic's Case
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Dr. David Evans presents the skeptics case. Government funded climate scientists claim that water vapour amplifies the direct warming effect of carbon dioxide three-fold, but independent climate skeptics say that empirical evidence shows that clouds and water vapour cut the direct warming effect in half.
Infrared Radiation and Planetary Temperatures
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Climate scientist Raymond Pierrehumbert explains the standard infrared radiation theory and how it determined planetary temperatures. Most serious climate skeptics agree with the basic theory, but disagree with Raymond's conjecture that the amplification by water vapour feedback is well known. Falling water vapour content in the upper atmosphere can offset the water vapour increase in the lower atmosphere.
