Global Warming Hoax: News / Comments / Debunking the CO2 Feedback Myth - by Leonard Weinstein, ScD
Conclusion:
Since water vapor is by far the largest greenhouse gas on the Earth, and since the Earth is mostly water covered, it is easy to see why the response of water to perturbations in the level and distribution of Solar insolation would be most important in the shift from glacial ages to interglacial periods. Reasonable arguments can be made for a strong positive feedback of water vapor to explain the rapid temperature increase during the transition. It is clear that such feedbacks are self-limiting, since the increase stops. However, the possible claim that the much smaller CO2 contribution, which even lags the sharp initial rise by many years, can then cause an even stronger positive feedback defies logic.
A recent significant increase of CO2, possibly with a large anthropogenic input, still results in a total less than 7% of the atmospheric greenhouse gas effect. Only about 1/3 of that is in the increase over the claimed "natural" levels. It is posited that this can somehow override the water vapor self-limiting mechanism by triggering a small increase in temperature to thus release more water vapor and supercharge a temperature rise to several times the direct effect of the CO2 itself. Since the self-limiting mechanism for the water vapor is present, this does not follow logically. Actual temperature changes have many drivers, but CO2 does not appear to be a significant driver at the levels or variations in levels present, and certainly can't have the amplifying effect claimed.
Click here for a brief Bio of Leonard Weinstein, ScD
Leonard Weinstein received a B.Sc. in Physics in 1962 from Florida State University. He started work at NASA Langley Research Center in June 1962. While at Langley, Leonard obtained his Master and Doctor of Science degrees in Engineering from the George Washington University. He continued to work at NASA Langley until June 2007, ending as a Senior Research Scientist. Dr. Weinstein has had a career that is recognized for innovation. He has over 90 publications, including 11 patents. He has received numerous awards, commendations, and recognitionÂ’s for innovative experimental research, including an Exceptional Engineering Achievement Medal, an IR-100 award, the 1999 American Institute of Aeronautics and Astronautics (AIAA) Engineer of the year, the James Crowder Award, and over 40 other awards and recognitions for innovative experimental research. Dr. Weinstein is presently a Senior Research Fellow at the National Institute of Aerospace.