By Andy May In this post I examine the proxies used to compare CO2 to temperature from 66 million years ago (Ma) until today and comment on the quality of…
Author: Andy May
Petrophysicist, details available here: https://andymaypetrophysicist.com/about/
The Earth without Greenhouse Gases
By Andy May The overall greenhouse effect (GHE) is often defined as the difference between Earth’s average global temperature without greenhouse gases (GHGs) and with them. Greenhouse gases are all…
Beyond CO₂: Unraveling the Roles of Energy, Water Vapor, and Convection in Earth’s Atmosphere
Watts Up With That? is committed to fostering open discourse on climate science and related topics. While we respect the authors’ perspective and their dedication to exploring climate dynamics, we…
The errors and misstatements in “Climate Denialism”
By Andy May The featured image is by Josh, used with permission. There are 20 clearly false statements and three additional problematic statements in Tinus Pulles’ “Climate Denialism.” Most of…
The AJES Response to May & Crok
By Andy May The featured image is figure 2 from May & Crok. This post is mostly a list of errors and misinformation in the AJES (The American Journal of…
Drought in the Southwestern U.S.
By Andy May The featured image is a photograph of the Big Bend area in Texas in October 2015 when the drought index was moderately moist. The photo was taken…
Climate Models, Clouds, OLR, and ECS
By Andy May The IPCC and the climate “consensus” believe that essentially all warming since 1750 is due to man’s emissions of CO2 and other greenhouse gases as shown in…
Comment on Cobb, 2024
By Andy May The featured image for this post is from Angela Wheeler at the CO2 Coalition, used with permission. This post is a comment on Cobb, 2024, the paper…
Climate Change over the past 4000 Years
By Andy May I last wrote about Climate Change and Civilization for the past 4,000 Years in 2016. Since then, a lot has changed, and I’ve learned a lot more…
Natural Climate Change Factors
By Andy May “Consensus” scientists do not believe that solar variability, internal climate variability (in this model simplified to the ~67-year stadium wave), or volcanism influence net global warming or…
Phoma destructiva’s 2nd Comment on Pubpeer
By Andy May and Marcel Crok Phoma Destructiva’s full comment is shown indented, as a block quote. To see the original go here. To see the abstract of our paper,…
Pubpeer Comment on our recent paper by the anonymous “Phoma destructiva”
A response to a critique of May & Crok, 2024
Is Sea Level Rise Accelerating?
By Andy May We are constantly told that the rate of global mean sea level (GMSL) rise is accelerating. Is it? How definitive is the evidence? If it is accelerating,…
Avoiding the Net Zero Trap
By Andy May Clintel has just put out a new publication, We Can Still Avoid the Net Zero Trap, by Kees de Lange and Guus Berkhout.
All things Equal
By Andy May In an interesting linkedin debate between Tinus Pulles and me, two subjects came up that are related to one another and too complicated for a comment. First…
“Bonus” Gets it wrong about May and Crok, 2024
By Andy May Wow! Our new paper “Carbon Dioxide and a Warming Climate are not problems,” in the American Journal of Economics and Sociology has struck a nerve, judging by…
Carbon Dioxide and a Warming Climate are not problems
By Andy May and Marcel Crok We were charged by Marty Rowland and the American Journal of Economics and Sociology (AJES) with writing a literature review paper supporting the skeptical…
The Solar Cycles: A New Physical Model
By Andy May Dr. Frank Stefani and colleagues from Helmholtz-Zentrum Dresden – Rossendorf and the Institute for Numerical Modelling, University of Latvia, have proposed a new physically consistent model of…
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