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La science de Stern

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Translations: (Português) (English)

Halldór Björnsson, William Connolley and Gavin Schmidt (traduit par Etienne Pesnelle)

A la fin de l’an dernier, le Trésor britannique a publié le rapport Stern sur les conséquences économiques du changement climatique, qui a été reçu avec enthousiasme par l’ensemble de la classe politique du Royaume-Uni, c’est à dire la gauche et la droite Depuis, il a fait l’objet de nombreux débats et critiques (voir la liste qu’a établie Rabbett Run). L’essentiel de la discussion a tourné autour des problèmes économiques (et éthiques) associés à “l’actualisation” (c’est-à-dire comment mesurer le bien-être futur à l’aune du bien-être actuel), ce dont traite notamment Nordhaus . Nous ne sommes pas qualifiés pour discuter de ces points, aussi ne les avons-nous pas commentés précédemment.

Toutefois, comme l’illustrent les interviews données lors d’une émission récente de Radio 4 (dont une avec notre William Connolley), certaines questions ont concerné la science qui sous-tend les calculs économiques. Nous allons essayer de les aborder.

Avery and Singer: Unstoppable hot air

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Last week I attended a talk by Dennis Avery, author with Fred Singer of Unstoppable Global Warming Every 1500 Years (there is a summary here). The talk (and tasty lunch) was sponsored by the Heartland Institute, and was apparently enthusiastically received by its audience. Still whoozy from a bit of contention during the question period, a perplexed member of the audience told me privately that he thought a Point/CounterPoint discussion might be useful (he didn’t know I wrote for realclimate; it was just a hypothetical thought). But here’s my attempt to accommodate. [Read more…] about Avery and Singer: Unstoppable hot air

National Academies Synthesis Report

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The long-awaited NAS synthesis report on surface temperature reconstructions over the last few millennia is being released today. It’s a long (155 page) report and will take a while to digest, but we applaud the committee for having tried to master a dense thicket of publications and materials on the subject over a relatively short time.

It is probably expecting too much for one report might to put to rest all the outstanding issues in a still-developing field. And given the considerable length of the report, we have little doubt that keen contrarians will be able to mine the report for skeptical-sounding sentences and cherry-pick the findings. However, it is the big picture conclusions that have the most relevance for the lay public and policymakers, and it is re-assuring (and unsurprising) to see that the panel has found reason to support the key mainstream findings of past research, including points that we have highlighted previously:
[Read more…] about National Academies Synthesis Report

MY Review of Books

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I’ve finally got round to reading a number of the many climate change-related books that have been published in recent months. These books seem to have caught the public imagination in ways that are different than in the past, and so it’s worth examining how they do. The three I’ve read are; Eugene Linden’s The Winds of Change, Elizabeth Kolbert’s Field Notes from a Catastrophe and Tim Flannery’s The Weather Makers. The first two writers are journalists, while the third is a scientist by background, and while there is some overlap in contents all of them, they are clearly distinct works in quite different styles. I’ll mostly stick to commenting on the science though… [Read more…] about MY Review of Books

L’état de confusion de Michael Crichton

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Translations: (English)

par Gavin Schmidt (traduit par Alain Henry)

Ce message s’écarte des pratiques habituelles de ce site pour commenter une pièce de pure fiction (au contraire des autres messages qui abordent le sujet sous un angle plus subtil). Le nouveau roman de Michael Crichton, « Etat d’urgence » raconte comment une ONG encourage la recherche scientifique sur le réchauffement global pour servir les objectifs de méchants éco-terroristes. Le roman nous amène inévitablement à la conclusion que le réchauffement global est un faux problème. Une leçon pour notre époque? Malheureusement, je ne le pense pas.
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