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Comments 1551 to 1600:
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bigoilbob at 00:51 AM on 19 August 2023A Frank Discussion About the Propagation of Measurement Uncertainty
"Did anyone ever see what the reviewers (including Carl Wunsch and
Davide Zanchettin) said about Frank's similar 2019 paper in Frontiers in Science?"Carl Wunsch has since disavowed his support for the contents. I'm not sure whether he would have rejected it upon closer reading. Many reviewers want alt.material to be published. If it's good stuff, it will be cited. The 2019 Pat Frank paper and this one have essentially not been...
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michael sweet at 00:36 AM on 19 August 2023Ice age predicted in the 70s
Don Williams:
The "hiatus" papers do not show what you are claiming. Yes, Mann et al claimed that the "pause" was statistically significant. You can quote that paper. But in science it is not individual papers that count, it is the conclusions that count.
Foster and Ramsdorf replied to the Mann et al paper and claimed that the Mann et al paper had made calculation errors that invalidated their result. Foster et al claimed that there was no statistical significance. The scientific method is to exchange peer reviewed papers to debate facts. After several papers were exchanged, Mann et al conceded that they had made a mistake in their calculations and the "pause" was not statistically significant. It was magnificent to watch top scientists debate a fact and reach a consensus on what the true result was.
The scientific consensus is that the "pause" was simply random variation and not a change in the warmng pattern. Data collected since then have conclusively confirmed that the climate did not stop warming as demonstrated by the escalator. The Mann et al scientists agree with the consensus.
Mann and his collaborators are great scientists. Sometimes everyone makes mistakes. The difference between scientists and deniers is that when data shows that a scientist made a mistake they learn from the experience and move on. Deniers just regurgitate the same old debunked "pause" claims after everyone informed has moved on.
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MA Rodger at 00:33 AM on 19 August 2023Ice age predicted in the 70s
Don Williamson @133 & others,
Discussion of the early 21st century SAT/SST record is hardily on-topic for this comment thread. The handful of years showing a reduced rate of warming surface tempertures did not lead to a reversal of warming but to an increased rate of warming, so any linkage to 1970's ideas of a coming ice age is entirely absent, despite an attempted linkage @108 up-thread. (And for the record, the take-away from the SciAm article referenced @133 is the ascribed response fro 'researchers' to all the 'hiatus' nonsense:-"Picking a period of a decade or so where one part of the Earth's climate system fails to warm and using it to discredit all of climate science is a fallacious argument, and one driven by those with an agenda to discredit climate scientists."
Don Williamson, you have up-thread referenced Oreskes in the discussion of the 1970's idea of a coming ice age and insist there is some missing argument that gives continuing credibility to this 1970's idea (which are also ideas of earlier times according to Oreskes. "Throughout most of the history of science, geologists and geophysicists believed that Earth history was characterized by progressive, steady, cooling.") Do note the referenced pre-print conference paper does not constitute proof of a 'missing argument'. And were one sought, perhaps Oreskes (2007) 'The scientific consensus on climate change: How do we know we're not wrong?' can provide it.
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michael sweet at 00:12 AM on 19 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
Old time readers of this website will remember when climate deniers derided "Catastrophic Anthropogenic Climate Change" or CAGW. Scientists insisted that was not their message. Was that only 10 years ago? Now I often hear climate scientists discussing catastrophic effects of global warming and I don't see the deniers using CAGW any more.
Eclectic: you read WUWT, do they still discredit CAGW?
I like the term catastrophic climate change. What else would describe the fires, droughts and floods worldwide?
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Rob Honeycutt at 00:10 AM on 19 August 2023Ice age predicted in the 70s
"The 'warming' was taking place where there's little to no measuring devices?
Is that sound science?"
Don... If heat energy is moving into realms that have little or no measuring devices, it's absolutely science. Researchers don't get to pick and choose how the physics operate. They can only devise methods to better account for the physics. This is precisely what science is about.
If you look at the animated escalator graphic, this is exactly what it's telling you. Heat energy is moving into and out of other systems which are coupled to the atmosphere. This has been understood for many decades, regardless of whether you're just catching on. Your only mistake would be to become so ideologically entrenched so as to be unable to grasp such a simple concept.
It's honestly okay to just say, "Hm, I hadn't thought about that."
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Bob Loblaw at 00:07 AM on 19 August 2023Ice age predicted in the 70s
Also note that the article in Scientific American that Don has pointed us to is phrased in the form of a question: "Has global warming paused?"
Also note that the subtitle is "Climate scientists know the answer is no, but have trouble communicating that".
Don needs to read up on Betteridge's law of headlines.
Seriously, is that the best you can do, Don?
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Bob Loblaw at 00:01 AM on 19 August 2023Ice age predicted in the 70s
As a further part of the challenge to Don:
You have referred to "the hiatus". I will repeat the graphic of the Escalator:
Since the topic of the OP here is "cooling in the 1970s", and The Escalator shows seven periods of "no warming", please be specific as to which of those seven periods represents "the hiatus" you are talking about. Or a different period, if you have found an eighth.
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Bob Loblaw at 23:53 PM on 18 August 2023Ice age predicted in the 70s
Don:
Just as I thought. You have not actually read any of the papers - you only have a link to something with selected quotes. And the "multiple papers" you claim are available just lead to Michael Mann mentioning a "temporary slowdown"?
I repeat my challenge:
Pick one - just one - of those papers, and provide us with a thorough review of that paper and how it supports your argument that the hiatus represents a serious challenge to the consensus position on anthropogenic increases in global temperature.
You're just blowing smoke. -
Don Williamson at 23:06 PM on 18 August 2023Ice age predicted in the 70s
To Eclectic
Use Google Scholar as well as a couple of search engines reading peer-reviewed paper on the 'hiatus' 'wsrming slowdown'
If you jot down the various reasons that were used in the multiple papers you'll understand why Dr Michael E Mann said, "The problem isn't that we cannot explain the temporary slowdown in warming — ???????????? ???????????????????????????? ???????? ???????????????? ???????????????????? ???????????? ???????? ???????????????? ???????????????????????????????????????????????? ???????????? ????????"
Dr Kevin Trenberth Trenberth was a co-author on a paper published in Nature Climate Change that used models to show that pauses in surface temperature warming correspond to additional heat being stored deep in the ocean, ???????????????????? ???????????????????? ???????????????? ???????? ???????????? ???????????????????????????????? ???????????????????????????? ???????????????????????????????????? ????????????????????????????.
The 'warming' was taking place where there's little to no measuring devices?
Is that sound science?
link to quotes above:
https://www.scientificamerican.com/article/has-global-warming-paused/
????
Moderator Response:[RH] Link activated.
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John Mason at 16:47 PM on 18 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
I rather liked 'Climate destabilisation' and used it a lot years ago....
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Eclectic at 16:00 PM on 18 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
BaerbelW @6 ,
For sure, Dr Hayhoe's "global weirding" is a great phrase, and fits nicely with her own slightly humorous style of presentation.
For everyday use ~ probably not a winner. It would appeal to the more intellectual end of the spectrum, who already are well-acquainted with the subject of AGW . . . but maybe not conveying the problem for the man-in-the-street. Too poetical.
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BaerbelW at 14:39 PM on 18 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
To add to Nigelj's list of possible terms: what about "global weirding" as used by Katharine Hayhoe for her video series?
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nigelj at 07:40 AM on 18 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
This issue of colourful terms to describe the climate problem comes down to the exact meanings of the terms. and how the general public would be likely to react.
For example the term global boiling seems acceptable. it is obviously hyperbole (deliberate exaggeration not to be taken literally) that nobody in the right mind would take literally, and it gets the point across. Its like the term "Im boiling hot". Nobody would say bad use of language, you are exaggerating. Ubrew 12 made the same sort of point. Only a small cadre of denialists are making a fuss about global boiling. I think the phrase is unlikely to be alienating the general public.
The term climate chaos seems appropriate. It has an element of hyperbole and yet has a foundation of accuracy.
Climate crisis or catastrope isn't hyperbole. People really are suggesting we are in a crisis or catastrophe. So its a question of whether thay are accurate terms, and thats tricky because they are open to interpretation and hard to precisely define. Although catastrophe and crisis is generally understood to be something immediate and overwhelming like a massive bridge collapsing. Whether the climate problem fits the criteria seems very open to interpretation althought IMO we are certainly already seeeing serious problems due to climate change.
The trouble is the use of terms like crisis and exaggeration are open to interpretation, so this gives the denialists an opportunity to claim they are exaggerations and to mock use of the terms. I dont believe in handing denialists ammunition, but it does leave me floundering for an appropriate word that sums things up better than "serious climate change problem."
Another word being more frequently used these days is that climate change is an extinction level threat. Generally this is boldy stated without much if any qualification. The evidence we have suggests climate change is an extinction level threat for at least some animal and plant species and human populations in the tropical climate regions. Its important these qualifiers are added when using the term extinction level threat. Otherwise by leaving things open and implying the human race could become extinct its just begging people to become sceptical.
I hate making comments like this because theres a risk I get labelled a luke warmer by those who cant seeem to read. And this has happened. But the point Im trying to make is its important to get across that the climate problem is very serious, but also avoid making wild claims that don't stand scrutiny.
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John Mason at 23:55 PM on 17 August 2023Ice age predicted in the 70s
Don, I think you are reading an awful lot into the Oreskes MS that simply isn't there. The piece is a whistle-stop and thus by definition incomplete tour through the history of science in the 19th and 20th centuries.
Just to cite one example in the MS: "the most recent glacial maximum was temporally located only ten to twelve thousand years ago."That's a snapshot of the thinking in the mid 1950s. In fact it was known by 2004 - widely known - that the LGM was more like 25,000 years ago - so well known that Oreskes probably didn't see fit to point it out!
There's a lot more intermingling these days between Earth Science disciplines than there was in the 1950s or 70s, as the planet is considered more holistically now and the tremendous importance of palaeoclimate has become widely accepted. -
Bob Loblaw at 23:08 PM on 17 August 2023Ice age predicted in the 70s
One more challenge for Don, which I predict will be ignored or deflected:
In comment #125 you mention that there are 100s of papers on the hiatus and claim:
...but I've done a lot of research into the hiatus - peer-reviewed papers 'research'
To demonstrate the level of "research" that you have done, here is the challenge:
Pick one - just one - of those papers, and provide us with a thorough review of that paper and how it supports your argument that the hiatus represents a serious challenge to the consensus position on anthropogenic increases in global temperature.
Don't forget to include a link to the paper.
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Bob Loblaw at 22:57 PM on 17 August 2023Ice age predicted in the 70s
Frankly, Don, you are now reaching the point where you are just spouting bull$#!^.
I challenged you in comment #113 to provide two things:
- State clearly what you think the "both sides" are.
- State clearly who you think was a well-known climate scientist that was on "both sides".
You have not done this. You have just engaged in a game of "Look! Squirrel!" to jump to some other rhetorical talking point. You are playing games of "maybe this, maybe that" with no actual demonstration of understanding the physics of climate and what is likely or even reasonable possible. You have done selective quoting, and taking those quotes out of context, in order to try to show some grand disagreement or lack of understanding that does not exist.
The "abrupt about-face/reversal of opinion" that you are hanging your hat on is only "abrupt" if you refuse to look at the actual history of climate science and refuse to learn about the well-understood physics that explains the different observed trends and supports our understanding/interpretation. There is a term for that sort of refusal to look at the information available.
As Rob Honeycutt explains in #122, there has been no "reversal" in our understanding of orbital mechanics and long-term trends related to glacial/interglacial cycles. There has been no "reversal" in our understanding that CO2 is a greenhouse gas, and that greenhouse gases have a significant effect on global temperatures. There has been no "reversal" in our understanding that atmospheric aerosols (dust, soot, etc.) cause reductions in global surface temperatures.
What has changed is which of these factors is playing a dominant role in current temperature trends. CO2 is "winning", and it is winning rapidly.
You will probably come back with some sort of quip about "Oreskes said this". Well, the anti-evolution crowd is fond of claiming that Darwin said that evolution could not produce the eye. No, he didn't, and you are using the same rhetorical ploy in quoting Oreskes out of context.
You have now switched to shouting "hiatus!" from the treetops. Guess what? Climate science is interested in what factors affect these short-term variations in global temperatures. So, they study them in greater and greater detail (because instrumentation improves) each time they happen. And they happen on fairly regular intervals. So regular that you can track them by how often the contrarians need to update their "no warming since..." myths. Pretty soon, we're going to have to start to rebut "no warming since 2023", since 1998 2016 won't work any more:
We even have a term for these "hiatus" events: we call it The Escalator. The graphic is in the right-hand margin of every SkS page, but here it is in full glory:
You keep saying "isn't this interesting?". No it is not interesting, it is tiresome. This site exists because some people refuse to learn the science and understand it. The "hiatus" was yet another temporary pause in one metric of global climate, and does nothing to reverse our expectations of future warming as CO2 continues to increase.
Your continued use of ":)" at the end of your comments suggests that you are now just trolling. (Gee. Isn't speculation without evidence just so much fun?)
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Doug Bostrom at 18:06 PM on 17 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
Thinking of whsettle's remarks, it astounds me that we'll readily and acceptedly describe such prosaic matters as getting children ready to go to school as "chaos" or "chaotic" but describing the presently emerging features of our changing the climate with the same terms fills us with qualms over hyperbole.
Same for "catastrophe." Fallen souffle? A dinner-time catastrophe! Multiple massively costly climate-driven extreme events? Don't say they're catastrophe, or catastrophic climate change— that's just too heated.
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Rob Honeycutt at 13:32 PM on 17 August 2023Ice age predicted in the 70s
Don @125...
"The last time I checked, which was a few years ago, he was expecting to top 300 papers on the subject. That's a lot of papers trying to explain a 'talking point'"
I'm very curious if you bothered to read any of these papers, or could quote the conclusions drawn from any of them.
For my own part, based on the research I've read, whenever there's an extended period of little or no warming... what I'm assuming is that means the oceans are taking up a lot of heat energy and all that eventually has to come back into equilibrium with the atmosphere.
"Contrarians" seem to only think, "Ha! No warming! Take that you eco-socialist!"
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Eclectic at 13:02 PM on 17 August 2023Ice age predicted in the 70s
Don Williamson @125 :
Agreed ~ 100s of peer-reviewed papers on the Hiatus subject of atmospheric pauses in [surface] temperature rise . . . but as Rob Honeycutt says: these pauses occur after every El Nino. Yet these are not actual pauses in modern global warming.
Do you understand the difference? And do you understand that none of us today should get too exercised about the topic?
Don , if the Hiatus is your own hobbyhorse, and you've done a lot of (internet?) research into the Hiatus . . . then you should be able to summarize its important points and place it in scientific context in today's perspective.
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Rob Honeycutt at 12:12 PM on 17 August 2023Ice age predicted in the 70s
"I think I understand why people are interested in finding out why the abrupt about-face more than 'just accept the consensus because it's a consensus and we really mean it this time'"
Don... Just to put a fine point on this one:
There was and is a concensus on orbitally forced cooling over the past 5-6000 years.
There was and is a concensus on mid-20th century cooling due to industrial aerosols.
There was and is a concensus that doubling CO2 concentrations would produce about 3°C of warming.
None of these are inconsistent.
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michael sweet at 12:11 PM on 17 August 2023Is Nuclear Energy the Answer?
Phillippe Chantreau,
This thread is now 328 posts long. I maintain that nuclear electricity is too expensive, takes too long to build and there is not enough uranium to build more than a handful of plants.
The plants in Georgia cost over $30 billion to build and billions of dollars additional were charged to customers while the plants were being built. They will each generate 1117 MW of power. With a 90% cacpacity factor that will be about $15,000 per megawatt of power source. In 2020 in the USA capacity weighted solar cost was about $1655 source. (It is less now). You can build 10 times as much solar than nuclear for a billion dollars. If you want the nuclear plant to be able to load follow you dramatically decrease the amount of power generated and increase the capacity adjusted cost.
It takes 10-14 years to build a nuclear plant. During that entire time you have to generate your power using fossil fuels. Solar plants take only 2-4 years to build and often start generating when they are half built. The CO2 pollution during constructiion of nuclear is more than the total CO2 cost of solar farms.
The supply of uranium is limited. There is not enough uranium to generate more than about 5% of world power.
Informed people can disagree on what they think about nuclear. I think that since nuclear is uneconomic, takes too long to build and there is not enough uranium that it is a waste of resources building any new plants. The time and costs are already sunk for existing plants so if they can conpete economically they can stay (most existing nuclear plants cannot compete economically).
If you think it is worth investing in expensive, slow, unsafe nuclear plants go for it. It is a free country.
I don't bother to discuss nuclear waste, the safety of nuclear plants, hot water pollution and vulnerability to natural disasters because the economics of nuclear plants are so bad.
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Rob Honeycutt at 11:56 AM on 17 August 2023Ice age predicted in the 70s
Don @123...
"One of the main thrusts of Ms Oresekes' article was the reversal of the dominant view - whether contrarians picked up on it or not."
And as I've attempted to explain repeatedly, there was a "reversal" because there was a "reversal" in the temperature trend. When it was cooling, the dominant position was that it was cooling. When the trend changed to warming, the dominant position "reversed" to warming.
I'm not sure why this fact escapes you.
"Why wouldn't 'this abrupt about-face—from cooling to warming' create doubt?"
Because it has nothing to do with any changes in the scientific understanding of forcings on the climate system that produce warming or cooling.
"A few years after the new consensus was formed - the hiatus made it's unfortunate debut."
Which was much ado about nothing. There's a "hiatus" after every major el nino event.
"I think I understand why people are interested in finding out why the abrupt about-face more than 'just accept the consensus because it's a consensus and we really mean it this time'"
Think about this:
We've known since the mid-1800's that CO2 is the primary radiatively active gas in the atmosphere. We've known since the early 1900's pretty much the amount of warming we'd see from a doubling of CO2 concentratations. Nothing has changed about that concensus, in fact it's only become vastly better understood since then.
The consensus that doubling CO2 would significantly warm the planet hasn't altered a bit. What Dr. Oreskes is speaking about is what was known about the temperature trend at the time, not the underlying physics of what was and is occurring.
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Don Williamson at 10:56 AM on 17 August 2023Ice age predicted in the 70s
To Eclectic
The pause or slowdown was real, 100s of peer-reviewed papers on the subject so I don't think it was just someone's fantasy. There was a contributor to this website, he was cataloguing the papers. The last time I checked, which was a few years ago, he was expecting to top 300 papers on the subject. That's a lot of papers trying to explain a "talking point"
I can see that we'll have to agree to disagree but I've done a lot of research into the hiatus - peer-reviewed papers 'research'
:)
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Eclectic at 10:39 AM on 17 August 2023Ice age predicted in the 70s
Don Williamson @123 and prior :
To put things in a more realistic perspective : the Ocean Heat Content continued to rise during the so-called Hiatus of atmospheric temperatures. So there was actually no real Hiatus ~ it was just an interesting talking-point. The globe was continuing to warm.
Yes, we can discuss "the hiatus" as an abstract concept or as a propaganda topic ~ but we are wasting our time if we tie ourselves into a pretzel trying to argue about consensus or scientific opinion regarding a physical non-event in overall global warming.
Propaganda point: Yes . . . a real scientific point: No
However, the 1945-1975 "cooling pause" was definitely real.
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Don Williamson at 08:21 AM on 17 August 2023Ice age predicted in the 70s
To Rob Honeycutt
One of the main thrusts of Ms Oresekes' article was the reversal of the dominant view - whether contrarians picked up on it or not.
Why wouldn't "this abrupt about-face—from cooling to warming" create doubt?
It seems logical to question the reversal especially when the climate scientists themselves reversed their opinion.
A few years after the new consensus was formed - the hiatus made it's unfortunate debut.
I think I understand why people are interested in finding out why the abrupt about-face more than 'just accept the consensus because it's a consensus and we really mean it this time''
:)
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Rob Honeycutt at 04:09 AM on 17 August 2023Ice age predicted in the 70s
Don @120... The "dominant view" changed precisely because it became clear the planet had moved from a cooling period into a warming period.
You're clearly not grasping there is no inconsistency here. What Oreskes is discussing is how "contrarians" might pick up on this fact and utilize it to create doubt in the minds of the general public related to the critical nature of CO2 driven climate change.
It's not like before 1970 researchers thought CO2 played no role in climate. It's not like they didn't know atmospheric aerosols would cool the planet.
I think the difference here is related to changes in the earth's mean temperature and the cause of changes in the earth's mean temperature.
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jlsoaz at 01:38 AM on 17 August 2023It's not bad
Also Bob Loblaw, I was writing too quickly before when composing the above response, but I'll add that I completely respect this particular area is in some ways harder to address than other areas, and that I may have myself, in my wording above, reflected some errors. Always the site should stick to the science and reality, and so if I made any errors in the above, then they should not be heeded. Perhaps it can be said that a challenge here is to state what the myths actually are, and then to have really good scientists help with composing a rebuttal that is strictly correct (even if it's nuanced and not pithy or easy to understand).
With all of that said, when I as a non-scientist (though with a bit of physical and social sciences coursework decades ago) went to look around to see what I could find on some aspects of these myths to do with how many people have died attributable to AGCC, it seemed to me that it has been many years that denialists have been largely succeeding in avoiding all discussions of a body count estimate (or range estimate) for AGCC leading up to this point. And how have they done this? I think a big part of it is they're successfully relying on the high bar of difficulty that there is in science for attributing deaths to this or that cause. -
Don Williamson at 00:34 AM on 17 August 2023Ice age predicted in the 70s
To Bob Loblaw
"unless we can give a convincing account of the empirical reasons behind that reversal"
I think we can agree the reversal was real. It needs to be explained by convincing arguments (rather that dismissing it out-of-hand) ~ but was that directed to the contrarians or to the "new consensus"?
The contrarians won't be convinced - they pounced on the flip flop as Ms Oreskes feared.
I think her article is a valuable insight into the innate complexities of climate science. The warming can taper off or cool. Maybe natural variability plates a bigger role that we might think?
Natural variability was a common refrain used in the hiatus discussions.
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Don Williamson at 00:23 AM on 17 August 2023Ice age predicted in the 70s
To Rob Honeycutt
What "change" took place in the "dominant view"?
"change" - as in reversal from "cooling to waming"?
The "abrupt about-face"?
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Rob Honeycutt at 00:07 AM on 17 August 2023Ice age predicted in the 70s
"You appear to want to make a mountain out of a molehill."
But that would fall under geology, wouldn't it, Bob? ;-)
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Rob Honeycutt at 23:58 PM on 16 August 2023Ice age predicted in the 70s
Also, Don... It was around the 1970's when there was some disagreement in the climate science community regarding whether the cooling effects of industrial aerosols or the underlying CO2 driven warming would dominate. At that point in time, there wasn't a strong consensus. It took additional study to convince the leading experts that CO2 was the larger, longer term problem.
The good news was that we, as a species, were able to substantively address the issue of industrial aerosols through the clean air acts in the US and similar regulations in other countries.
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jlsoaz at 23:48 PM on 16 August 2023It's not bad
Hello Bob Loblaw,
Thanks for the explanation, it makes some sense. I have to say though that the consequences are looming large for all of us of not responding to denialists relying on the myths of
"nobody has died from this".
"you can't attribute the deaths accurately"
"causality is hard to establish, and amateurs misuse the word"
etc.
I do think it would be useful to memorialize your own response into part of a new myth rebuttal. Perhaps it would be useful to break the response down to bite-sized chunks like this:
Myth: It is impossible for scientists to attribute any increase in deaths to anthropogenic global climate change, or to its related phenomena.
Reality: Epidemiological science has these tools which allow for analysis of such problems in thus-and-such a way. They do not allow for saying "x" but they do allow for saying "y". Thus, while scientists have struggled to provide an accurate body count that can be attributed credibly to the change in climate, peer-reviewed papers over the last 20 years provide us with this range of estimates."
In the rebuttal composition a place could also be made for helping readers understand what the difficulties are in the science (lack of controlled experiments, various complicating factors, etc.) but how it is a myth (I am thinking it is anyway) that these difficulties mean that science is powerless to help us understand anything about developing a body count estimate.
I also think the tobacco industry point seems useful, but somehow that was overcome, right? -
Rob Honeycutt at 23:43 PM on 16 August 2023Ice age predicted in the 70s
"What Oreskes stated about undermining the consensus with the reversal from cooling to warming..."
Once again, the earth was cooling mid-century. The earth had been cooling for the past 5-6000 years. When CO2 forcing came to dominate the trend shifted to rapid warming.
I believe what Dr. Oreskes is saying is, that change in the dominant view could be used by "contrariants" to cast doubt on the science. It's a rather precient statement since they subsequently did exactly that.
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Bob Loblaw at 23:05 PM on 16 August 2023Ice age predicted in the 70s
Don:
@114:
You have not specified what you think are the two sides implied by your "both sides" quip.
If you are going to be condescending about throwing out Michael Mann's name, your credibility is going to go to zero. Without a statement explaining what you think "both sides" means, then providing names is meaningless.
It is not the label "Geology" on Mann's PhD that makes him a climatologist. It is the nature of the work that he did (paleoclimatology) and what he has done since. It appears that you would rather obfuscate, than clarify.
@ 115:
Let's look at Oreskes' exact words in the last paragraph of her introduction:
If scientific knowledge can be characterized as the convergence of expert opinion, then this kind of abrupt reversal of opinion might undermine our confidence in that knowledge, unless we can give a convincing account of the empirical reasons behind that reversal, and the historical context in which those reasons became persuasive.
Since sarcasm and condescension seem to be the kind of discussion you want to have, please note Oreskes' use of the word "might". In case you are unfamiliar with the word, it means "possibility". It is a conditional statement, and the condition is "unless we can give a convincing account".
The simple fact is that we do have information about why old viewpoints regarding the cooling of the earth on geological time scales transformed into an expectation that CO2 would lead to warming. And Oreskes' paper discusses this.
You appear to want to make a mountain out of a molehill.
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Don Williamson at 22:27 PM on 16 August 2023Ice age predicted in the 70s
To Bob Loblaw
I apologize for misspelling your name, it was unintentional.
What Oreskes stated about undermining the consensus with the reversal from cooling to warming is her pov as a professor of science history and I can't dispute it. She has much more background to draw on for her conclusions and opinions than I would. I would defer to her as the expert.
I specifically use her terms throughout the discussion to try limit any inference that it's my opinion or my interpretation. I hope this clarifies the situation.
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Don Williamson at 22:18 PM on 16 August 2023Ice age predicted in the 70s
To Rob Loblaw
WRT "both sides"
Micheal E Mann for one - You are familiar with that name or would you like some background on his achievements?
He has a geology PhD so I'm not sure if that meets everyone's definition of *climate scientist*
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Bob Loblaw at 13:39 PM on 16 August 2023Ice age predicted in the 70s
One more for tonight.
Don, you state in #108:
Some well known climate scientists were on both sides and that wasn't very helpful.
My challenge to you is to do two things:
- State clearly what you think the "both sides" are.
- State clearly who you think was a well-known climate scientist that was on "both sides".
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Bob Loblaw at 13:31 PM on 16 August 2023Ice age predicted in the 70s
Don:
Please first do me the courtesy of getting my name right. It's Bob, not Rob. You have repeated this several times, and it makes me think you are not reading carefully.
Not all geologists are the same. I am a physical geographer, and my specialty was climate (and more specifically, microclimate). You can read more about my background in the "Team" menu option under "About" (beneath the main masthead).
Other physical geographers specialized in topics such as geomorphology, hydrology, etc., and within those sub-disciplines they may have specialized in coastal geomorphology, glacial geomorphology, etc. And after they finish PhDs, they spend years continuing to learn (I would hope) that would allow them to become specialists in areas peripheral from their early studies. Although I am very familiar with many of these other sides of physical geography (which overlaps with geology in many cases), it does not mean that I am an expert in coastal geomorphology.
Unfortunately, your position in #105 that Michael Mann has a background in geology means that all geologists can be considered to be "climatologists" only demonstrates your lack of understanding of the discipline. Only a very small subset of geologists learn the processes that drive climate and can be considered to be climatologists.
As the saying goes, cats have four legs, and dogs have four legs, but cats are not dogs.
Your comment in #106 about Oreskes using awkward wording is only evidence of your desire to read something into it that isn't there. And your devolution into "undermine the consensus argument" only demonstrates where your true bias rests. You are seeing this as a battle between two camps, rather than a scientific discussion.
Most of the rest of your posts are exposing your bias: you have your talking points that represent "our side" (that is, your side). You think that your misrepresentations expose some nefarious intent on the part of a group you think of as your opponents. This is most unfortunate, as it makes it very difficult to have a constructive discussion with you.
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Rob Honeycutt at 12:59 PM on 16 August 2023Ice age predicted in the 70s
Don @108... The fundamental facts of CO2 driven warming are incredibly well understood at this point in time. For this to be wrong would require nearly two centuries of physics to be fundamentally wrong.
Is there a possibility that nearly all the science is getting something really basic completely wrong? Absolutely. But the question arises, are you willing to bet a sustainable, livable planet for human civilization on the slim odds that the science is wrong?
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Rob Honeycutt at 12:51 PM on 16 August 2023Ice age predicted in the 70s
"Why not acknowledge the 'dominant view' was wrong and science coalesced into a new consensus?"
Don... This comment is exactly what I'm talking about. There was (and still currently is) a dominant view that the earth has been cooling for the past several thousand years. There was (and still currently is) a dominant view that the earth had been cooling from the 1940's up to about the early 1970's.
What she's saying is that "contrarians" might exploit these facts of science in order to seed doubt in the minds of the general public about the clear reality of CO2 driven global warming.
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Rob Honeycutt at 12:47 PM on 16 August 2023Ice age predicted in the 70s
Don... "I can't fathom why an American professor of her status would travel overseas to a conference and present her article is she wasn't aligning herself to the opinions as stated in the article."
You are very definitely misinterpreting what she's stating again, I believe primarily because you don't understand what she's saying.
I, or anyone else here, can explain it for you if you're willing to listen.
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Don Williamson at 12:30 PM on 16 August 2023Ice age predicted in the 70s
Here's a great argument from Oreskes in her 2007 paper on the consensus.
"might the scientific consensus be wrong? If the history of science teaches anything, it’s humility. There are numerous historical examples where expert opinion turned out to be wrong"
The "cooling" was obviously in the data (some say cooling from the 1920s, some say cooling from the 1940s) but the warming eventually came to the forefront as Oreske stated in her 2004 article.
Will the warming continue? That can get into a very complex discussion about the hiatus - where many diverse opinions were offered. Some of the same scientists disputed and supported the reality of hiatus. Can cooling start again despite CO₂? We really don't know so locking in only one direction for temperatures leaves an opening for contrarians to pounce when it's not warming and they took advantage of that with the so-called hiatus. Some well known climate scientists were on both sides and that wasn't very helpful.
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whsettle at 12:21 PM on 16 August 2023Do phrases like ‘global boiling’ help or hinder climate action?
How about "Climate chaos". This is quite literally true from a mathematical sense (e.g., non-linear dynamics and the emergence of tipping points) and it gives a sense of the impending dysfunction and seemingly random profusion of unpleasant events. But alas, still it comes off as hyperbole. For those of us who see what is happening, "climate change" is sufficient. The devil is in the details, not the title.
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Don Williamson at 10:47 AM on 16 August 2023Ice age predicted in the 70s
To Rob Loblaw
"why did geologists shift their attention from cooling to warming?"
Oreskes keeps reiterating that point for a reason.
To counter the (pending) exploitation with a convincing argument is required, I haven't seen that argument put forward. I've seen dismissals, denials but are those very convincing?
:)
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Don Williamson at 10:41 AM on 16 August 2023Ice age predicted in the 70s
To Rob Loblaw
I never stated that Oreskes wanted to promote the cooling but it was an awkwardly worded challenge to contrarians to exploit if they think about it.
The most important aspect IMHO is the following:
"unless we can give a convincing account of the empirical reasons behind that reversal"
"that reversal" "cooling to warming" "abrupt about-face" needed a convincing argument, I'm not sure simply dismissing it is a very convincing argument.
Perhaps she is trying to suggest a way to maintain solidarity in needed in order to not "undermine" the consensus argument - when and if the reversal is exploited?
I think she realizes that without a convincing argument, it's not easy to dismiss it. The reversal has legs, how strong the legs are depends on how strong the arguments are from our side.
:)
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Don Williamson at 10:18 AM on 16 August 2023Ice age predicted in the 70s
To Rob Loblaw
What is a Geologist?
A geologist is a scientist who studies the Earth, its history, and the processes that shape and change it. Geology is a broad field that encompasses the study of rocks, minerals, fossils, mountains, volcanoes, earthquakes, rivers, oceans, glaciers, and more. Geologists use a variety of methods to gather information about the Earth, including fieldwork, laboratory analysis, computer modeling, and remote sensing techniques. They often work in teams with other scientists, engineers, and professionals to solve complex problems related to natural resources, environmental protection, land use, and natural hazards.
That meets the definition of 'climate scientist. btw Prof Michael E Mann has a PhD in Geology, not specifically "climate science"
:)
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Bob Loblaw at 09:59 AM on 16 August 2023A Frank Discussion About the Propagation of Measurement Uncertainty
Bdgwx:
Thanks for the additional information. From the Bevington reference you link to, equation 3.13 looks like it matches the equation I cited from Wikipedia, where you need to include the covariance between the two non-independent variance terms. Equations 4.13, 4.14, and 4.23 are the normal Standard Error estimate I mentioned in the OP.
Of course, calculating the mean of two values is equivalent to merging two values where each is weighted by 1/2. Frank's equations 5 and 6 are just "weighted" sums where the weightings are 30.417 and 12 (average number of days in a month, and average number of months in a year), and each day or month is given equal weight.
...and all the equations use N when dealing with variances, or sqrt(N) when dealing with standard deviations. That Pat Frank screws up so badly by putting the N value inside the sqrt sign as a denominator (thus being off by a factor of sqrt(N)) tells us all we need to know about his statistical chops.
In the OP, I linked to the Wikipedia page on MDPI, which largely agrees that they are not a reputable publisher. I took a look through the Sensors web pages at MDPI. There are no signs that any of the editors or reviewers they list have any background in meteorological instrumentation. It seems like they are more involved in electrical engineering of sensors, rather than any sort of statistical analysis of sensor performance.
A classic case of submitting a paper to a journal that does not know the topic - assuming that there was any sort of review more complex than "has the credit card charge cleared?" The rapid turn-around makes it obvious that no competent review was done. Of course, we know that by the stupid errors that remain in the paper.
It is unfortunate that the journal simply passes comments on to the author, rather than actually looking at the significance of the horrible mistakes the paper contains. So much for a rigorous concern about scientific quality.
The JCGM 100:2008 link you provide is essentially the same as the ISO GUM I have as a paper copy (mentioned in the OP).
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Eclectic at 08:31 AM on 16 August 2023A Frank Discussion About the Propagation of Measurement Uncertainty
Bdgwx @21 , allow me to say it here at SkS (since I don't post comments at WUWT ) . . . that it is always a pleasure to see your name/remarks featured in the list of comments in any thread at WUWT. You, along with a very small number of other scientific-minded posters [you know them well] provide some sane & often humorous relief, among all the dross & vitriol of that blog.
My apologies for the fulsome praise. ( I am very 'umble, Sir. )
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Bob Loblaw at 07:35 AM on 16 August 2023Ice age predicted in the 70s
Don @ 102:
Is there any particular reason you keep ignoring the "earth scientist", "geologist" and "geophysicist" qualifiers that appear in Oreske's article?
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Don Williamson at 07:18 AM on 16 August 2023Ice age predicted in the 70s
To Rob Honeycutt
You appear to have moderator status "[RH] Shortened and activated link" but the link I provided has been disappeared?
Moderator Response:[BL] Yes, Rob is one of the moderators here, as am I. As a general rule, though, we do not moderate discussions that we are involved in, except for simple clerical issues such as fixing links.
In your comment #90, the link is still there, behind the LINK text that Rob added. Hover your mouse over the link and your browser should show you the full link. In any web page, the text that is displayed and the actual link URL are two different items.
The web software here does not automatically create links from text. You can do this when posting a comment by selecting the "insert" tab, selecting the text you want to use for the link, and clicking on the icon that looks like a chain link. Add the URL in the dialog box. In the dialog box, you will see that you have explicit control over the displayed text and the URL for the link.
