By John Christy
The Global Warming Policy Foundation, GWPF Note 17
This paper is based a talk given by Dr Christy at the Palace of Westminster on 8 May 2019.
About the author
1 Measuring the greenhouse effect
2 The importance of the troposphere
3 Another metric
4 Hiding the problem
Excerpt: Measuring the greenhouse effect
When I grew up, science was defined as a method of discovering information. You would make a claim or a hypothesis, and then you would test that claim against independent data. If it failed, you rejected your claim and you started over again. In otherwords your hypothesis was not good information. But nowadays, if someone makes a claim about the climate, and someone like me falsifies it, rather than abandoning the hypothesis, that person tends to just yell louder that their claim is right. They find it difficult to look at what data might say about their beloved hypothesis.
I’m referring to the climate’s response to the emission of extra greenhouse gases as a result of our combustion of fossil fuels. In terms of scale – and this is important – we want to know the impact on the climate of an extra 0.5 units of forcing, amongst all the other forcings, some of which are over 100 units each. So we’re trying to figure out the signal of an extra 0.5 of a unit amidst these large and variable natural flows of energy.
About the Author
Dr John R. Christy is the director of the Earth System Science Center, Distinguished Professor of Atmospheric Science and Alabama State Climatologist at the University of Alabama in Huntsville, where he has been employed for over 30 years. His responsibilities include managing a science centre with over 80 employees, working on several research projects ranging from developing and launching space-based instruments to studying impacts of significant weather events in developing countries, to high-resolution studies of air pollution (air-chemistry and meteorology). His own research concerns developing, constructing and refining global and regional climate data records that can be used to test claims of climate variability and change and to understand the climate’s sensitivity to various forcing factors. This work has resulted in almost 100 peer-reviewed publications.
This publication is available at https://www.thegwpf.org/content/uploads/2019/05/JohnChristy-Parliament.pdf