Site: Science of Doom

Slant: Sceptic

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Recent Articles

Science of Doom: #CaliforniaKnew

Recent reports have shown that California knew about the threat of climate change decades ago. No one could have missed the testimony of James Hansen in 1988 and many excellent papers were published prior to that time (and, of course, subsequently). Californian policymakers cannot claim ignorance. I’m not a resident of California but I often

2018-03-26 05:01   Click to comment

Science of Doom: Models, On – and Off – the Catwalk – Part Eight – Time-Step and Noise Impact on Results

In Part Seven – Resolution & Convection we looked at some examples of how model resolution and domain size had big effects on modeled convection. One commenter highlighted some presentations on issues in GCMs. As there were already a lot of comments on that article the relevant points appear a long way down. The issue

2018-01-29 08:50   Click to comment

Science of Doom: Clouds and Water Vapor – Part Eleven – Ceppi et al & Zelinka et al

A couple of recent articles covered ground related to clouds, but under Models –Models, On – and Off – the Catwalk – Part Seven – Resolution & Convection & Part Five – More on Tuning & the Magic Behind the Scenes. In the first article Andrew Dessler, day job climate scientist, made a few comments and in one comment

2017-12-24 23:35   Click to comment

Science of Doom: Models, On – and Off – the Catwalk – Part Seven – Resolution & Convection

In the comments on Part Five there was some discussion on Mauritsen & Stevens 2015 which looked at the “iris effect”: A controversial hypothesis suggests that the dry and clear regions of the tropical atmosphere expand in a warming climate and thereby allow more infrared radiation to escape to space One of the big challenges in

2017-11-26 00:58   Click to comment

Science of Doom: Climate Sensitivity – Stevens et al 2016

I was re-reading Missing iris effect as a possible cause of muted hydrological change and high climate sensitivity in models, Thorsten Mauritsen and Bjorn Stevens from 2015 (because I referenced it in a recent comment) and then looked up other recent papers citing it. One interesting review paper is by Stevens et al from 2016.

2017-11-23 23:48   Click to comment

Science of Doom: Models, On – and Off – the Catwalk – Part Six – Tuning and Seasonal Contrasts

In Part Five – More on Tuning & the Magic Behind the Scenes and also in the earlier Part Four we looked at the challenge of selecting parameters in climate models. A recent 2017 paper on this topic by Frédéric Hourdin and colleagues is very illuminating. One of the co-authors is Thorsten Mauritsen, the principal author of the 2012 paper we

2017-11-20 09:03   Click to comment

Science of Doom: Renewables XX – Recent Renewable Statistics

I’ve been digging through some statistics for my own benefit. When you read or hear a statistic that country X is generating Y% of electricity via renewables it can sound wonderful, but the headline number can conceal or overstate useful progress. A few tips for readers new to the subject: Energy is not electricity. So

2017-11-17 23:26   Click to comment

Science of Doom: Water vapour feedback is simply written into climate models as parameters?

Over in another article, a commenter claims: ..Catastrophic predictions depend on accelerated forcings due to water vapour feedback. This water vapour feedback is simply written into climate models as parameters. It is not derived from any kind simulation of first principles in the General Circulation Model runs (GCMs).. [Emphasis added] I’ve seen this article of

2017-11-05 22:17   Click to comment

Science of Doom: Two Basic Foundations

This article will be a placeholder article to filter out a select group of people. The many people who arrive and confidently explain that atmospheric physics is fatally flawed (without the benefit of having read a textbook). They don’t think they are confused, in their minds they are helpfully explaining why the standard theory is

2017-11-05 05:20   Click to comment

Science of Doom: Impacts – XIV – Tropical Cyclones and Climate Change 1

In recent articles we have looked at rainfall and there is still more to discuss. This article changes tack to look at tropical cyclones, prompted by the recent US landfall of Harvey and Irma along with questions from readers about attribution and the future. It might be surprising to find the following statement from leading

2017-09-24 07:26   Click to comment

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