boji
Well-known member
I do wish pro-climate crisis folks would effectively rule out the issues of scale. I've lost count how many Anti-AGW folks have responded to me with the 100k year chart as an example pro-AGW alarmism:
anthropogenic global warming.... warming caused by humans.What's AGW?
I didn't repeat the actual numbers cited because these are what I call "brown" numbers (pulled from someone's butt).Thanks, John!
I'm sure in that observation lies bad methodology. How in heaven'e name would you try to evaluate "deaths". Would that include stuff like tropical disease, fi.
What I do know that counters that observation, is that people lead shorter lives in hot climates, compared to colder. That's just numbers and fairly reliable, if you keep it to an average.
The evolution of these statements over time reflects the improvement of scientific understanding and the corresponding decrease in uncertainties regarding human influences. The SAR stated that ‘the balance of evidence suggests a discernible human influence on global climate’ (IPCC, 1995b). Five years later, the TAR concluded that ‘there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities’ (IPCC, 2001b). AR4 further strengthened previous statements, concluding that ‘most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations’ (IPCC, 2007b). AR5 assessed that a human contribution had been detected to changes in warming of the atmosphere and ocean; changes in the global water cycle; reductions in snow and ice; global mean sea level rise; and changes in some climate extremes. AR5 concluded that ‘it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th 41 century’ (IPCC, 2013b).
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[With AR6], human influence on the climate system is now an established fact: combined evidence from across the climate system strengthens this finding. It is unequivocal that the increase of CO2, methane (CH4) and nitrous oxide (N2O) in the atmosphere over the industrial era is the result of human activities and that human influence is the principal driver of many changes observed across the atmosphere, ocean, cryosphere and biosphere. (TS.1.2, TS.2.1)
This hit the headlines over here over a week ago and caused the predictable media and government frenzy. They are now saying they will not allow sales of any but new electric cars from 2030 onwards. I guarantee this is impossible. Hydrogen fuel is now touted as the 'solution' to the drive to 'net zero' while studiously ignoring the fact that huge amounts of electricity will be required to generate it not to mention the present capacity is little more than laboratory supply level. This is the biggest con ever yet the general public is lapping it up and crapping themselves in equal measure.For some more bad news, IPCC released AR6 covering the last 10 years in developments on climate change and modeling. It's a long read (thousands of pages), but one thing that immediately stuck out to me was that they have dropped the 'highly likely' terms related to the anthropomorphic contributions to CO2, and have essentially made these terms certain.
Which summaries in AR6 are not supported by data?I am about 140 pages into "Unsettled" by Koonin... he is very critical of those reports with summaries that are not always supported by the data.
I am only half finished reading the book, and its not a fun read, mostly about climate science and causes of uncertainty in conclusions.koonin sez said:Previous climate-assessment reports have misrepresented scientific research in the “conclusions” presented to policy makers and the media. The summary of the most recent U.S. government climate report, for instance, said heat waves across the U.S. have become more frequent since 1960, but neglected to mention that the body of the report shows they are no more common today than they were in 1900. Knowledgeable independent scientists need to scrutinize the latest U.N. report because of the major societal and economic disruptions that would take place on the way to a “net zero” world, including the elimination of fossil-fueled electricity, transportation and heat, as well as complete transformation of agricultural methods.
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As is now customary, the report emphasizes climate change in recent decades but obscures, or fails to mention, historical precedents that weaken the case that humanity’s influence on the climate has been catastrophic. The Summary for Policy Makers section says the rate of global sea-level rise has been increasing over the past 50 years. It doesn’t mention that it was increasing almost as rapidly 90 years ago before decreasing strongly for 40 years.
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Good science is characterized by detail, data, proven models and reasoned debate. That takes time. Meanwhile, we should be wary of the torrent of hyperbole that is sweeping the globe.
Other opinions:I am about 140 pages into "Unsettled" by Koonin... he is very critical of those reports with summaries that are not always supported by the data.
Of course believe what you want.
JR
https://en.wikipedia.org/wiki/Steven_E._KooninPhysicist Mark Boslough, a former student of Koonin, posted a critical review at Yale Climate Connections. He stated that "Koonin makes use of an old strawman concocted by opponents of climate science in the 1990s to create an illusion of arrogant scientists, biased media, and lying politicians – making them easier to attack."[24]
Nonprofit news organization InsideClimate News reported that climate scientists call Koonin's conclusions "fatally out of date ... and based on the 2013 physical science report of the Intergovernmental Panel on Climate Change (IPCC)."[9]
Mark P. Mills, a venture capitalist in the nuclear power and fossil fuel extraction industries and senior fellow at the Manhattan Institute,[25] lauded the article in The Wall Street Journal as "rebut[ing] much of the dominant political narrative." Twelve scientists analyzed Mills’s arguments and said that he merely repeated Koonin’s incorrect and misleading claims.[26]
Wall Street Journal article repeats multiple incorrect and misleading claims made in Steven Koonin’s new book ’Unsettled’From a Aug 10, WSJ commentary
Twelve scientists analyzed the article and estimate its overall scientific credibility to be very low.
A majority of reviewers tagged the article as: Inaccurate, Misleading.
No. System sciences are about preponderance of evidence, not about fitting data to a theory. If there is a set of criterion that goes against a conclusion, it makes that conclusion less likely, not incorrect. It's a massive difference.Science is not a popularity contest or vote. It's about data fitting theory or not.
isn't this the only relevant perspective?PS: Next on my reading list is "False Alarm" by Lomborg. Koonin who was in the Obama administration does a deep dive into climate science methods, certainty, and factors glossed over in the media with their sky is falling pronouncements. Lomborg talks about economic cost/benefit and the like. I recall years ago reading an analysis by some Chicago school economists.
He writes at length about the different degrees of certainty/uncertainty wrt climate science estimates/predictions.No. System sciences are about preponderance of evidence, not about fitting data to a theory. If there is a set of criterion that goes against a conclusion, it makes that conclusion less likely, not incorrect. It's a massive difference.
I'm not sure what you are even talking about.There was a great analogy in one of the linked articles: the Chinese satellite that crashed to Earth a few months ago...there was a lot of arguing about where it would land, based on calculations and models. But nobody argued either a) that it was unknowable, b) that because the models couldn't predict where it would land, that meant it would stay in orbit, or c) it was only media hysteria and there was no satellite.
Cost/benefit seems to be pretty much ignored in the public conversation. The costs are real and near term (like government building EV charging stations), while the benefits are hypothetical, save the planet from warming a degree or two a century from now.isn't this the only relevant perspective?
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