Category Archives: Uncategorized

by Judith Curry

I have a new article published in the latest issue of International Affairs Forum.

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by Dan Hughes

The contribution of viscous dissipation conversion of kinetic energy into thermal energy has been significantly over-estimated in three recent publications. The kinetic energy content of the macro-scale mean flow is assigned to be the heat dissipation into thermal energy. The estimate leads to temperature increases that make significant contributions to melting ice on Greenland.

A recent news release announced the findings of the research, and a video of a melt-lake draining into the glacier ice is in the news release and also at YouTube here.

A different estimate, in which the viscous dissipation is determined at the micro-scale of the flow, is calculated in these notes. This estimate, and the associated temperature increases in the flow, are significantly less than that based on the macro-scale. A PDF file with my analysis is here [BSLdissip02]

Comments, especially corrections for incorrectos, will be appreciated.

by Robert Ellison

I don’t raise the alarm at all, but there are tipping points in the Earth system.   Megafloods and megadroughts. Abrupt warming or cooling of many degrees C in years or decades.  Glacials and interglacials.  Solar energy driving patterns of planetary turbulence and an ice, cloud and biology response.   These have always been with us.  Our limited geophysical instrumental series reveal a variability that can’t be distinguished from anthropogenic warming effects (Koutsoyiannis 2020 ).    So it’s happening but perhaps not quite the end of the world yet.

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by Judith Curry

Russia’s invasion of Ukraine is inextricably linked to the global energy crisis, which is inextricably linked to the so-called climate ‘crisis’.

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by Judith Curry

“The current thinking and approaches guiding this conceptualization and description have been shown to lack scientific rigour, the consequence being that climate change risk and uncertainties are poorly presented. The climate change field needs to strengthen its risk science basis, to improve the current situation.” – Norwegian risk scientist Terje Aven

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by Javier

My perspectives on managing personal Covid risk, based upon my knowledge of microbiology, genetics, immunology, cancer, and neurobiology.

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by Judith Curry

“The first rule of climate chess is this.  The board is bigger than we think, and includes more than fossil fuels.”  – Jon Foley

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by Judith Curry

Some reflections on the movie Don’t Look Up.

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by Judith Curry

Politics versus the data versus communicating science.

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by Judith Curry

My follow up interview on the Strong And Free podcast [link].

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by Andy West

Although a game played on a relatively tiny stage, ClimateBall™ points to fundamental processes, which across the vastly larger global public stage and involving billions of meme transactions annually, have caused the emergence of a cultural belief-system based upon the narrative of ‘certain catastrophic climate-change’.

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by Judith Curry

“The field of Sun-climate relations . . . in recent years has been corrupted by unwelcome political and financial influence as climate change sceptics have seized upon putative solar effects as an excuse for inaction on anthropogenic warming” – Lockwood (2012)

“We argue that the Sun/climate debate is one of these issues where the IPCC’s “consensus” statements were prematurely achieved through the suppression of dissenting scientific opinions.” –  Connolly et al. (2021)

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by Judith Curry

Are our current solutions only a short term fix?

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by Judith Curry

This morning I participated Conference on Energy and Decarbonization – A New Jersey Business Perspective. https://njbia.regfox.com/energy-summit.

UPDATE: full recording of the conference [here]

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by Fritz Vahrenholt and Rolf Dubal

The warming of the last 20 years has its essential cause in the change of the clouds.

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by Judith Curry

A rather astonishing conclusion drawn from reading the fine print of the IPCC AR6 WG1 Report.

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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 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

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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