The ongoing debate over climate sensitivity reflects the inherent difficulty of the problem, and some methodological weaknesses–particularly regarding statistical issues–in published research, rather than any fundamental disagreement about the reality…
Tag: Climate sensitivity
CERES Satellite Data Suggests Low Climate Sensitivity
Equilibrium climate sensitivity (ECS) is a measure of how much the Earth’s global average surface temperature will eventually increase in response to a doubling of atmospheric carbon dioxide concentration.
James Hansen: Climate Cassandra or Science Salesman?
Hansen’s argument structure is fundamentally circular: he assumes a high-sensitivity system, interprets ambiguous data to reinforce that view, and then treats the match as confirmation. That’s not how robust hypothesis…
New Journal of Climate Study Reduces Doubled CO2 Climate Sensitivity By 40%, To 0.72°C
From the NoTricksZone By Kenneth Richard Doubling the 2005 CO2 concentration (380 ppm) to 760 ppm only produces a globally-averaged 2.26 W/m² perturbation at the top of the atmosphere (TOA). This…
Spencer and Christy’s new climate sensitivity paper has been published – and its LOWER.
From Dr. Roy Spencer: If we assume ALL *observed* warming of the deep oceans and land since 1970 has been due to humans, we get an effective climate sensitivity to…
An Interview with Top Climate Scientist Bjorn Stevens
We should keep looking, but so far there’s no evidence that clouds play a major role.
Important New Paper Challenges IPCC’s Claims about Climate Sensitivity
Official IPCC estimates of future global warming may be overstated
Outside The Black Box
Models that need model-specific input to replicate the known past, violate the most basic criteria of science to earn the label “scientifically proven”, independent of the “proven physics” they are…
Climate scientists realize models yield “implausibly hot forecasts of future warming”.
Guest “Ya think?” by David Middleton U.N. climate panel confronts implausibly hot forecasts of future warmingBy Paul Voosen Jul. 27, 2021 Next month, after a yearlong delay because of the…
A global context for Man-made Climate Concerns
Therefore whatever CO2 reductions and sacrifices of wellbeing are made in the Western World will be overtaken and soon exceeded by them. It should be realised that climate change policies…
A fiery past sheds new light on the future of global climate change
Many of today’s climate models rely on past levels of greenhouse gasses and aerosols to validate their predictions for the future. But there’s a problem: While pre-industrial levels of greenhouse…
High end of climate sensitivity in new climate models seen as less plausible
Researchers at Princeton University and the University of Miami reported that newer models with a high “climate sensitivity” — meaning they predict much greater global warming from the same levels…
“USGS Gets Politics Out of Climate Forecasts”
Guest “another thing lost in the November coup” by David Middleton USGS Director Jim Reilly authored a recent opinion piece in the Wall Street Journal… USGS Gets Politics Out of…
New paper suggests historical period estimates of climate sensitivity are not biased low by unusual variability in sea surface temperature patterns
An important new paper by Thorsten Mauritsen, Associate Professor at Stockholm University[i] and myself has just been accepted for publication (Lewis and Mauritsen 2020)[ii]. Its abstract reads:
Climate Models Have Not Improved in 50 Years
Guest “how can he write this with straight face?” by David Middleton Even 50-year-old climate models correctly predicted global warmingBy Warren Cornwall Dec. 4, 2019 Climate change doubters have a…
More Junk Science From the AAAS of A: Bird Apocalypse Edition
Guest Science! (as in “she blinded me with”) critique by David Middleton One of the best things about my morning emails from the American Association for the Advancement of Science…
Putting It On The Line
Guest Post by Willis Eschenbach Thanks to an alert commenter, half of my last post was shown to be in error. Like most folks, I really, really hate to be…
Pre- and Post-Feedback Sensitivity
Guest Post by Willis Eschenbach [UPDATE TWO: Rather than trying to cooper up the errors, I have simply removed the incorrect sections and left the calculation of the Planck feedback intact. I…
Monday Mirthiness – More 'skeptical science' kids scienz
Josh writes: Nic Lewis has a very amusing comment over at Lucia’s about a paper written by Gavin Cawley, Kevin Cowtan, Robert Way, Peter Jacobs and Ari Jokimäki – all part of…
WUWT Contest Winner, General Audience, 1st Place – “Is There Really a Climate Crisis?”
In sum, encouraging the energy industry to innovate will lead to a prosperous, clean and secure environment not only for us here in the United States but also for the…