- Format: Kindle Edition
- File Size: 3171.0 KB
- Print Length: 187 pages
- Publisher: Jack Barrett, the author, is a physical chemist now retired from an academic career spent at Chelsea College London (14 May 2012)
- Sold by: Amazon Media EU S.à r.l.
- Language: English
- ASIN: B0083IOWPU
- Text-to-Speech: Enabled
- Word Wise: Enabled
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- Amazon Bestsellers Rank: #925,964 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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Global Warming: The Human Contribution Kindle Edition
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His main studies were Chemistry, Physics, Mathematics and Woodwork. Next came six years at the Victoria University of Manchester studying Chemistry and acquiring a PhD in physical chemistry for research into the Photolysis of Liquid Water. He then had a lecturing career at the Universities of Hertfordshire (Hatfield College of Technology as it was), London (Chelsea), London (Queen Elizabeth), London (King’s) and eventually London (Imperial).
He authored several books on chemistry, also on sale at amazon.
He is an expert in the spectroscopy of small molecules which include the ‘greenhouse’ gases H2O, CO2, CH4, N2O and O3.
He does not have to live from subsidies now abundantly flowing to so called "climate science" researchers.
Therefore he has the right background to publish about climate models and the influence of CO2 on the climate.
His interest in climate change developed with the 1992 Report of the Intergovernmental Panel on Climate Change [IPCC] (Cambridge University Press), because of the global importance of the topic.
He became sceptical about climate modelling and what seemed to him the exaggerated claims emerging from the computer programmes about our future global climate.
jack barrett has a deep knowledge of chemistry and the quantum mechanics needed to understand the effect of greenhouse gases on the climate.
He uses extensively the program MODTRAN from the University of Chicago to model the atmosphere.
I am an engineer with a background in the semiconductor physics, and a good knowledge of the quantum mechanics behind it.
Thanks to the work dr. Jack Barrett I now have an understanding of the effect of CO2 on the climate.
The results of hjs simulations are surprising:
- the effect of the current CO2 concentrations is +10.4C, i.e. without the current day 400 ppm CO2 in the atmosphere the average surface temperature of the earth would be 10.4C lower.
This means that CO2 in ppm concentrations is responsible for 10.4C of the total 34C of the greenhouse effect.
Results of the calculations are shown.
- he also shows "The widely prophesied doubling in CO2 concentration from the pre-industrial value of 285 ppmv to 570 ppmv would be associated with an increase of just 1·5°C."
An additional increase of CO2 to 1000 ppm would lead to 1.5C temperature increase.
The calculations are done using MODTRAN.
His work is also an important critique on IPCC:
There are two main challenges to the IPCC version of climate change. One is the usage of an inflated value for the sensitivity of the atmosphere to changes in greenhouse gas concentrations that leads to exaggerated predictions of future changes. The second challenge, connected to the first, is that positive feedbacks are possibly overestimated and that some negative feedbacks are either minimized or ignored. In both cases the science is not clear cut and offers opportunities for biasing the outcomes of any of the computer programmes used to produce the predictions. These matters are dealt with to some degree on this website. Additionally, the IPCC consider the possible effects on the climate from changes in the solar wind, as indicated by the variability of sunspots and cosmic ray intensities, as being of little significance.
This is a work people must read, before taking any position in the climate debate.