by Anthony Watts, October 31, 2018 in WUWT
Friends of Science Society is critical of the IPCC SR15 report, pointing out the following:
We are in the Meghalayan, not the Anthropocene. The IPCC SR15 report claims to view climate change through “the lens of the Anthropocene.” This term is popularly used to describe a modern geological period wherein humans are assumed to have a larger impact on the world than nature. On July 13, 2018, the International Union of Geological Sciences (IUGS) issued a statement that the earth is now in the Meghalayan, a period that began 4,200 years ago. In response to questions as to why the term “Anthropocene” had not been included, at least for the past 50 years of presumed human influence, the IUGS responded that the term “Anthropocene” has not even been submitted for consideration and that the term has only sociological, not scientific relevance. The IPCC should not use this ‘lens.’
All climate models (simulations) used by the IPCC run ‘too hot’ versus observations. The computer simulations project future warming (thus being the rationale for global warming climate policies) show significantly higher temperatures than what is being observed. Only the Russian climate model and satellite/weather balloon data closely match present temperatures in the lower troposphere. This suggests that most climate models ascribe too great an effect of warming (climate sensitivity) to carbon dioxide.
This means the climate models should not be used to set public policy.
No temperature can be accurately measured to a precision of less than ±0.1°C. global temperature data is a metric of averaged and adjusted data from many sources, suggesting that a 0.5°C difference in temperature is moot and an arbitrary figure. It does not reference an actual measurement of earth’s temperature; people are being misled.
by Prof. dr. Paul Berth, 29 octobre 2018 in ScienceClimatEnergie
Le physicien Jacques Duran, fondateur du célèbre site Pensée Unique et pionnier du climato-réalisme en France, est décédé ce vendredi 26 octobre 2018.
Son site internet est toujours online. Si vous ne le connaissez pas, allez vite le voir. Copiez le et diffusez le. Il est vraiment Unique! Il est abondamment documenté et illustré, et représente une véritable mine de connaissances sur le climat. Son site, créé en 2006 sous le pseudonyme de Jean Martin, est dédié à tous ceux qui ont conservé un esprit critique et qui se refusent à absorber sans réfléchir une grande partie des nouvelles de toutes sortes qui nous parviennent chaque jour.
by David Middleton, October 23, 2018 in WUWT
Scientists are very divided on climate change
Much of my rebuttal was put together from prior WUWT posts on this subject, there’s at least one new addition to the vast evidence of scientific division (Stenhouse et al., 2017).
Stenhouse et al., 2014 told us that atmospheric scientists are very divided on climate change over the past 150 years.
89% × 59% = 52%… A far cry from the oft claimed 97% consensus.
by Tim Ball, September 29, 2018 in WUWT
In media interviews or discussions with the public, the most frequent opening challenge is; “But don’t 97% of scientists agree?” It is usually said obliquely to imply that you know a lot, and I don’t understand, but I assume you are wrong because you are in the minority. I don’t attempt to refute the statistics. Instead, I explain the difference in definitions between science and society. Then I point out that the critical 97% figure is that at least 97% of scientists have never read the claims of the IPCC Reports. How many people reading this article have read all the IPCC Reports, or even just one of them? If you have, it is probably the deliberately deceptive Summary for Policymakers (SPM). Even fewer will have read the Report of Working Group I: The Physical Science Basis. Naively, people, especially other scientists, assume scientists would not falsify, mislead, misrepresent, or withhold information. It is worse, because the IPCC deliberately created the false claim of consensus.
by Wallace Manheimer, June 4, 2018 in ClimateChangeDispatch
A claimed nearly unanimous scientific consensus on fear of climate change has caused a push to substantially reduce or even eliminate the use of fossil fuel in favor of solar and wind.
But three crucial questions are: 1) is the scientific community really united? 2) can solar and wind take over any time soon to provide the required vital energy for the maintenance of modern civilization in today’s world of 7 billion people?, and 3) has CO2 caused any harm yet? The answer to all three questions is no.
A major theme of this essay is that many assertions can easily be checked out by a simple Google search.
by A. Watts, May 2, 2008 in WUWT
A new study by climatologists Nicholas Lewis and Judith Curry concludes that Earth’s “equilibrium climate sensitivity” (ECS) to more atmospheric carbon dioxide is as much as 50% lower than climate alarmists have been claiming. That their paper was published in the Journal of Climate suggests that the asserted “97% consensus” of climate experts may be eroding.
Or as Cornwall Alliance founder Cal Beisner puts it (paraphrasing Winston Churchill) it may not be the beginning of the end of climate alarmism. But it could be the end of the beginning of alarmism as the dominant, ever-victorious tenet of our times.
Indeed, say other noted climatologists, there are good reasons to think ECS and alarmist errors are even greater than 50 percent. For one thing, there is no persuasive reason to assume our planet’s climate system (…)
by Paul Bert, 20 Novembre 2017, in Contrepoints
15 000 scientifiques lancent un cri d’alarme sur l’état de la planète à la COP23. Penchons-nous sur la rigueur de leur démarche.
Voir également ici, also see here
by Anthony Watts, October17, 2017 in WUWT, Press release
Electricity Consumers Fully Support Scientists’ Letter to EPA Calling for Immediate Reopening of its GHG Endangerment Finding
Key Points: This Letter from over 60 highly credentialed scientists states that: “We the undersigned are individuals who have technical skills and knowledge relevant to climate science and the GHG Endangerment Finding. We each are convinced that the 2009 GHG Endangerment Finding is fundamentally flawed and that an honest, unbiased reconsideration is in order.”
by Ferenc Janko et al., , September 2017, in GWPF
Debate and controversy concerning the issue of climate change generally results in the hindering and obstruction of social and governmental action on this issue. This paper analyses the scientific background, i.e. the reference list of the IPCC Fifth Assessment Report ‘‘The Physical Science Basis’’ and an alternative climate change report of a US think tank institute ‘‘Climate Change Reconsidered II. Physical Science’’.
See also here
by N. Scaffetta et al., September1, 2017 in Int.J.Heat.Technology
The period from 2000 to 2016 shows a modest warming trend that the advocates of the anthropogenic global warming theory have labeled as the “pause” or “hiatus.” These labels were chosen to indicate that the observed temperature standstill period results from an unforced internal fluctuation of the climate (e.g. by heat uptake of the deep ocean) that the computer climate models are claimed to occasionally reproduce without contradicting the anthropogenic global warming theory (AGWT) paradigm. In part 1 of this work, it was shown that the statistical analysis rejects such labels with a 95% confidence because the standstill period has lasted more than the 15 year period limit provided by the AGWT advocates themselves.
See also here
by Habibullo I. Abdussamatov +125/et al., November 29, 2012, in Washington Post
On November 13, 2012, you said at Yale: “The science is clear; we should waste no more time on that debate.”
We the undersigned, qualified in climate-related matters, wish to state that current scientific knowledge does not substantiate your assertions.
by Paul Matthews, August 13, 2017 in CimateScepticism
In many ways, the climate debate has hardly changed since I got interested in it about ten years ago. Public opinion wobbles up and down with hardly any real change. The same tired arguments and claims come round again: every climate conference is the last chance to save the planet; the Arctic ice is always about to vanish in one or two years, or ten years; climate scientists continue to be accused of selecting data sets to create hockeysticks and manipulating data; and teams of climate scientists keep producing reports saying almost exactly the same thing as the previous reports, which then get misrepresented and hyped by the media.
by Judith Curry, July 15, 2017 in ClimateEtc.
In understanding climate change risk, and deciding on the ‘if’ and ‘what’ of ‘action’, we need to acknowledge that we don’t know how the climate of the 21st century will play out (Deep Uncertainty, folks). Four possibilities:
It is possible that human-caused climate change will be swamped by much larger natural climate variability.
It is possible/plausible that the sensitivity of the climate is on the low end of the IPCC envelope (1.0-1.5C), with a slow creep of warming superimposed on much larger natural variability.
It is possible/plausible that the IPCC projections are actually correct (right for the wrong reasons; too much wrong with the climate models for much credibility, IMO).
It is possible that AGW and natural variability could conspire to cause catastrophic outcomes