Climate Etc.

by Patrick Michaels

A critique of Judah Cohen’s recent cover article in Science linking February’s disastrous cold outbreak in Texas to global warming

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by Judith Curry

A few things that have caught my eye these past several weeks.

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by Robert Wade

A microcosm on the ‘morality’ of cancel culture: the aborted conference on ‘Global Warming: Mitigation Strategies’, hosted by the Italian scientific academy the Lincei.

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by Judith Curry

In a recent invited talk at the American Chemical Society annual meeting, I attempted to explain the climate debate in 15 minutes.

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by Ross McKitrick

One day after the IPCC released the AR6 I published a paper in Climate Dynamics showing that their “Optimal Fingerprinting” methodology on which they have long relied for attributing climate change to greenhouse gases is seriously flawed and its results are unreliable and largely meaningless. Some of the errors would be obvious to anyone trained in regression analysis, and the fact that they went unnoticed for 20 years despite the method being so heavily used does not reflect well on climatology as an empirical discipline.

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by Ross McKitrick

Two new peer-reviewed papers from independent teams confirm that climate models overstate atmospheric warming and the problem has gotten worse over time, not better. The papers are Mitchell et al. (2020) “The vertical profile of recent tropical temperature trends: Persistent model biases in the context of internal variability”  Environmental Research Letters, and McKitrick and Christy (2020) “Pervasive warming bias in CMIP6 tropospheric layers” Earth and Space Science. John and I didn’t know about the Mitchell team’s work until after their paper came out, and they likewise didn’t know about ours.

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by Judith Curry

The IPCC AR6 WGI report has been released [link]

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By Judith Curry

A few things that caught my eye these past several weeks

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by Judith Curry

Heat waves are the new polar bears, stoking alarm about climate change.  Climate scientists addressing this in the media are using misleading and/or inadequate approaches.  How should we approach assessing whether and how much manmade global warming has contributed to recent record breaking  temperatures?  Read on for some outside-the-box thinking on this.

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by Judith Curry

How would you explain the complexity and uncertainty surrounding climate change plus how we should respond (particularly with regards to CO2 emissions) in five minutes?

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by Judith Curry

I recently participated in a Technical Conference sponsored by the U.S. Federal Energy Regulatory Commission (FERC).

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by Patrick J Michaels

Earlier this year, Eric Kaufmann of the University of London published a remarkably detailed and comprehensive study of bias in academia, “Academic Freedom in Crisis: Punishment, Political Discrimination, and Self-Censorship.” Kaufmann’s writing is a product of California’s Center for the Study of Partisanship and Ideology, a small think-tank set up to do research that is forbidden in today’s academy. His finding of rampant left-sided political bias in publication, employment, and promotion in the Academy — and discrimination against anyone right-of-center — qualifies as forbidden scholarship.

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by Thomas Anderl

Simple models are formulated to identify the essentials of the natural climate variabilities, concentrating on the readily observable and simplest description. The results will be presented in a series of five articles. This first part shows an attempt to determine the climate role of CO2 from the past. Observations on 400 Mio. years of paleoclimate are found to well constrain the compound universal climate role of CO2, represented by a simple formula.

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by Judith Curry

The concerning saga of the creation, enforcement and collapse of a ‘consensus’ on Covid-19 origins.

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by Judith Curry

Stop using the worst-case scenario for climate change — more realistic scenarios make for better policy. 

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by S. Stanley Young and Warren Kindzierski

Climate Etc. recently carried several insightful posts about How we fool ourselves. One of the posts – Part II: Scientific consensus building – was right on the money given our experience! The post pointed out that… ‘researcher degrees of freedom’… allows for researchers to extract statistical significance or other meaningful information out of almost any data set. Along similar lines, we offer some thoughts on how others try to fool us using statistics (aka how to lie with statistics); others being epidemiologists and government bureaucrats. 

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by Alan Longhurst

   “Never before in 1000 years the Atlantic Meridional Overturning Circulation (AMOC), also known as the Gulf Stream System, has been as weak as in the last decades“.  

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by Judith Curry

Reviews of new books by Steve Koonin, Matthew Kahn and Marc Morano.

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by Judith Curry

A few things that caught my these past few weeks.

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by Judith Curry

“Is the road to scientific hell paved with good intentions?” – political psychologist Philip Tetlock (1994)

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