Discussion thread: New IPCC AR6 report

This is a discussion thread for ideas and points related to the just released IPCC AR6 WGI report:

https://www.ipcc.ch/report/ar6/wg1/

Your thoughtful and detailed comments will be helpful in forming future stories on WUWT about the report.

Also, on Twitter, Dr. Roger Pielke Jr has a series of tweets, that is well worth your time to read.

Of course, there’s lots of gloom and doom headlines in the media, which is pretty much how they treat everything these days. For example, the ever-predictable Seth Borenstein with AP never fails to disappoint:

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Rud Istvan
August 9, 2021 11:24 am

Accessed and read the SPM. IPCC Pretty much threw in everything but the kitchen sink. Deliberately erased any notion of or evidence for natural variation in all time frames. Sea level rise accelerating by splicing satalt (which does not close so wrong) onto land motion corrected tide gauges (which do close). Weather extremes increasing by assertion, without any supporting data. Glaciers retreating since 1800 (about end of LIA) man caused—despite not enough CO2 to matter until after 1950. No mention of the increasing divergence in climate models.

Curious George
Reply to  Rud Istvan
August 9, 2021 11:43 am

Business as usual.

bdgwx
Reply to  Rud Istvan
August 9, 2021 12:00 pm

I’m seeing natural variation attribution at around -0.3 to +0.3C of the observed +1.05C change in temperature. Figure SPM.2.

Tom Abbott
Reply to  bdgwx
August 9, 2021 1:05 pm

About that 1.05C increase in temperature, when was that figure reached?

It must have been during the year 2016, since that is the warmest year in the 21st century, but the temperatures have cooled 0.4C since that time, so shouldn’t that 1.05C firgure be reduced accordingly?

bdgwx
Reply to  Tom Abbott
August 9, 2021 1:17 pm

I’m not trying to be crass here. I’m genuinely trying to understand your question. What specifically about SPM.2 and where it says “observed warming 2010-2019 relative to 1850-1900” is not clear?

Dave Fair
Reply to  bdgwx
August 9, 2021 2:42 pm

1850-1900 is a fifty-one year period with sparse and lousy instrumentation. 2010-2019 is a ten-year period which includes an El Nino and a Super El Nino. Lying liars just got to lie.

bdgwx
Reply to  Dave Fair
August 9, 2021 5:16 pm

What baseline do you think they should have used?

ENSO over the period 2010-2019 averaged +0.04. .

John Tillman
Reply to  Dave Fair
August 11, 2021 10:18 am

Plus El Niño of 2019.

Tom Abbott
Reply to  bdgwx
August 9, 2021 4:38 pm

I was assuming the 1.05C figure was the high temperature that the IPCC thinks the Earth is currently sitting at.

Previously, NASA/NOAA showed 2016, the hottest year in the 21st century, sitting at about 1.0C above the baseline they use (1850, I believe) and so I was equating the 1.05C figure you used with that figure. If they are not describing the same thing, then maybe I better look at Figure SPM.2.

bdgwx
Reply to  Tom Abbott
August 10, 2021 6:53 am

The 1.05C figure is not mine. It comes from SPM.2 in AR6 and is described as being the ten year average from 2010-2019. That is definitely not the same thing as the annual mean in 2016.

Clyde Spencer
Reply to  Rud Istvan
August 9, 2021 9:12 pm

Yes, if they are asserting that the warming is 100% anthropogenic, that doesn’t leave any room for natural variation. That alone makes their conclusion highly suspect!

Tom Abbott
Reply to  Rud Istvan
August 10, 2021 5:24 am

“Weather extremes increasing by assertion, without any supporting data.”

To be expected when they have no evidence to offer. The only way to continue the scam is for them to make unsubstantiated assertions in which they have “high confidence” It’s an expensive hoax on humanity.

Arif Lodhi
August 9, 2021 11:25 am

Whenever #Socialists come to power they bray the the climate song and beg for more taxes to control families through bureaucracy… it’s a cyclic scene like Climate a cyclic phenomenon

Rud Istvan
August 9, 2021 11:42 am

Ok, went to read the Technical Summary (TS). Your cannot make this up. The first SIX pages are a list of all the TS edits TO BE MADE —-
“Changes to the underlying scientific-technical assessment TO INSURE CONSISTENCY WITH THE APPROVED SPM.”

So much for IPCC ‘science’. Approve a Summary fo Policymakers, then change the underlying scientific-technical assessment to be consistent with the approved policy summary. What a joke. Archived for future reference.

Greg
Reply to  Rud Istvan
August 9, 2021 12:34 pm

It’s the same old process: write the politically agreed “summary” then try to cobble together the thing you are supposed to have summarized.

How the hell can you write a summary of anything which has not yet been finalised.

The really give the whole game away with this crap.

Stephen Philbrick
Reply to  Rud Istvan
August 9, 2021 12:37 pm

I do not see that language in https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Full_Report.pdf

Which page?

(Never mind, I see it here:https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_TS.pdf)

BTW, there are bigger fish to fry. I looked at a few and they are mainly innocuous.

Dave Fair
Reply to  Stephen Philbrick
August 9, 2021 2:47 pm

Show us the location of those “bigger fish.” I’ll drop a treble hook in those waters.

Stephen Philbrick
Reply to  Dave Fair
August 10, 2021 12:35 pm

I think you missed the point. There are dozens of statements in this report worth discussing, arguably head-lined by ECS estimates that bear little relationship to reality. I don’t think it’s fruitful to spending time debating whether a phrase should be “a core set of five illustrative scenarios… ” rather than “a core set of five scenarios…”. Most of the items in the list are equally innocuous.

Dave Fair
Reply to  Stephen Philbrick
August 10, 2021 5:20 pm

The scenarios include two that are almost universally recognized to be outside the bounds of probability. The UN IPCC CliSciFi AR6 spent most of its analytical verbiage on those two, especially the highest. The entire exercise is meant to convince you of imminent catastrophe. It is not science, it is ideology of the Marxist type.

Tom Abbott
Reply to  Rud Istvan
August 9, 2021 1:09 pm

That’s standard operating procedure for the IPCC. The IPCC bureaucrats let the politicians lead the parade.

Human-caused Climate Change is Politics all the way down.

Dave Fair
Reply to  Rud Istvan
August 9, 2021 2:44 pm

So, the above down-voters approve of politicians editing scientific documents?

Reply to  Dave Fair
August 10, 2021 1:29 am

Politicians are not editing scientific documents because, by definition if the documents are edited by politicians they are not scientific.

Curious George
Reply to  Rud Istvan
August 9, 2021 3:55 pm

You’ve made my day.

August 9, 2021 11:45 am
leitmotif
Reply to  HenryP
August 9, 2021 12:09 pm

What nonsense. 400 ppm. 800 ppm. It does not matter because it does nothing.”

And that should be the argument not how much warming does atmospheric CO2 cause.

Dave Fair
Reply to  HenryP
August 9, 2021 2:51 pm

IIRC, a number of other physicists made similar calculations with the result of very minimal warming potential of further atmospheric CO2 increases.

Ron
Reply to  Dave Fair
August 9, 2021 4:09 pm

There is a paper from William Happer

https://arxiv.org/pdf/2006.03098.pdf

that argues that what CO2 could absorb is already pretty close in saturation so there can’t be a great increase anymore.

But there is another paper of doing an actual experiment pretty close to the one done in the link above:

https://www.omicsonline.org/open-access/a-novel-investigation-about-the-thermal-behaviour-of-gases-under-theinfluence-of-irradiation-a-further-argument-against-the-greenh-2157-7617-1000393.pdf

son of mulder
August 9, 2021 11:47 am

What was the contribution of the Clean Air Acts in the US & Europe back in the 70’s /80’s to climate change? How did the perturbation of growing coal usage in China/Imdia vs the decrease in Europe and the US , contribute to warming. SO2 is a cooling gas. If SO2 is reduced then surely there is warming. How much? Travelling from the Shires into London the temperature rises by several degrees….thats UHI. How much warming has been due to UHI. The temperature gradient between the equator and the Arctic has decreased, has that caused more dangerous storms or fewer?

Tom Abbott
Reply to  son of mulder
August 9, 2021 1:14 pm

“What was the contribution of the Clean Air Acts in the US & Europe back in the 70’s /80’s to climate change? How did the perturbation of growing coal usage in China/Imdia vs the decrease in Europe and the US , contribute to warming. SO2 is a cooling gas. If SO2 is reduced then surely there is warming. How much?”

The Global Cooling crowd has been making these assertions for years, but they can’t tell you how much.

There is no more evidence that SO2 is affecting the Earth’s climate than there is about CO2 affecting the climate. If either are affcting the climate, it is undetectable.

How much, you ask. Nobody knows. And they have been looking at it for decades, just like they have been looking at CO2 for decades, yet nobody knows. Lots of guesses, but nobody knows.

Meanwhile, Mother Nature continues on about Her business.

Pravda Pundit
August 9, 2021 11:52 am

Figure SPM.2: has completely erased the influence of the sun by combining volcanoes and sun influence based on ” synthesize information from climate models and observations”.
Completely unbelievable

Walter Sobchak
August 9, 2021 11:58 am

I was hoping that the wizards at WWUT would read it an explain it to us deplorables and bitter clingers.

Vuk
Reply to  Walter Sobchak
August 9, 2021 12:16 pm

Apparently it is many hundreds of pages long. I hope someone does but it will not be me. Tonto Boris said just few min after it was released ‘it makes sobering reading’, hence I depend on my leader’s judgement after apparently he red it.
The other day the UK’s chancellor (no.2) send a two page letter to him, didn’t bother to read it, apparently ‘too long’ but when the new media got hold of the letter’s content he went ‘f…..g tonto’ said Times.

Stephen Philbrick
Reply to  Vuk
August 9, 2021 12:33 pm

3949 pages. Haven’t read it all yet 🙂

Vuk
Reply to  Stephen Philbrick
August 9, 2021 12:56 pm

That’s 200 pages longer than 3 sets of War&Peace novels.

Bruce Cobb
Reply to  Stephen Philbrick
August 9, 2021 1:02 pm

Good God. That’s a lot of toilet paper.

Carlo, Monte
Reply to  Stephen Philbrick
August 9, 2021 1:07 pm

It beat the US Senate’s multi-trillion dollar “infrastructure“ bill, which is 2701 pages?

Curious George
Reply to  Stephen Philbrick
August 9, 2021 4:03 pm

That’s a lot of space to bury dead bodies.

drh
Reply to  Stephen Philbrick
August 10, 2021 8:15 am

Reminds me of a funny saying: If you can’t dazzle them with brilliance, bamboozle them with bullshit.

Dave Fair
Reply to  Stephen Philbrick
August 10, 2021 5:26 pm

Read WG1; its the meat. WG2 and WG3 are mental masturbation and wild speculation, sometimes quoting UN IPCC CliSciFi “hot” GCMs driven by wild “scenarios” of massive increases in atmospheric CO2 concentrations.

Newminster
August 9, 2021 12:06 pm

If nobody minds, I’ll wait for the actual report not this mendacious scaremongering nonsense!

bdgwx
Reply to  Newminster
August 9, 2021 12:07 pm

There is no need to wait. The report is available now.

https://www.ipcc.ch/report/ar6/wg1/

Clyde Spencer
Reply to  Newminster
August 9, 2021 9:16 pm

Yes, by then all the edits should have been made.

August 9, 2021 12:06 pm

Many of the changes observed in the climate are unprecedented in thousands, if not hundreds of thousands of years, and some of the changes already set in motion – such as continued sea level rise – are irreversible over hundreds to thousands of years.

From the first paragraph of the IPCC press release – 9 Aug 2021.

This is written to set the tone for their frantic alarmism.

Prof Guus Berkhout and his team direct a simple challenge to IPCC scientists in their horrifying declaration, “There is no climate emergency“:
Scientists should openly address uncertainties and exaggerations in their predictions of global warming” (my emphasis)

August 9, 2021 12:16 pm

FAQ 7.2 (7 – 130) is critical to WG1. It’s about the effect of clouds.

The conclusion is that cloud changes will become a net warming. There are two reasons for this.

1) Particulates will cease nucleating low level clouds due to clean air acts.
2) GHG induced warming will lead to changes to the geographical distribution by longitude will favour increased warming.

However, the proportion of the two causes is not described. And as only one of them can be mitigated by GHG emission reduction (at most one) the report is practically worthless from a policy perspective.

Please check my conclusion as this is rather important, I think.

John Tillman
Reply to  M Courtney
August 9, 2021 1:37 pm

Net warming from clouds is highly dubious.

Of course, climastrologists can assert whatever they want, since clouds can’t be modeled, even given correct assumptions, which is by no means assured.

Reply to  John Tillman
August 9, 2021 3:05 pm

The conclusion of net warming is not important.
That conclusion being drawn from something unrelated the GHGs is very important.
Please check that I have understood FAQ 7.2 correctly.

John Tillman
Reply to  M Courtney
August 11, 2021 10:26 am

You have.

Clean air is going to fry us if plant food doesn’t.

John Phillips
Reply to  M Courtney
August 9, 2021 3:32 pm
Reply to  John Phillips
August 10, 2021 12:11 am

Yes, That’s one paper that uses a statistical learning analysis that provides a global observational constraint on the future cloud response and says it’s 90% surface temperature led.
Great. But Irrelevant to the point I made.
Please think about the issue of the IPCC report. If the IPCC cannot determine how much is AGW and how much is reduction in particulates from clean air acts then the whole mitigation policy approach collapses. The end of cheap energy for nothing.

Sunderlandsteve
Reply to  M Courtney
August 10, 2021 4:19 pm

Yes I get your point, if they don’t attribute proportionality to the 2 described effects then its meaningless.
If its predominantly particulates ceasing to nucleated then co2 reduction strategies are pointless.
It’s curious that they don’t address this.

Reply to  Sunderlandsteve
August 11, 2021 11:45 am

Yes. I thought my communication skills had completely failed.
Politically, this is very important.

Ron
August 9, 2021 12:26 pm

Kudos, figure SPM.10 is a fricking framing master piece!

To come up with this idea to conflate the outrageously bad prediction of RCP8.5 deserves credit.

ThinAir
Reply to  Ron
August 9, 2021 2:50 pm

Clearly there is no limit to the power of CO2 in figure SPM 10. Every additional tonne contributes equally to heating the Earth. Logic and physics be damned. — Sarc.

On a serious note, it has always confounded me how they can say that some 40% or more of human CO2 emissions in a given year are absorbed into the oceans, but then not allow 40% or more of the existing CO2 in the atmosphere (up to say December 31, of the prior year) to not be absorbed into the oceans.

Dave Fair
Reply to  ThinAir
August 9, 2021 3:01 pm

The take-away information is that UN IPCC CliSciFi GCM temperature projections are simply linear projections of atmospheric CO2 levels. We can do away with the multi-billion dollar CMIP exercises, pick an ECS and project future temperatures based on the linear projections of CO2.

Bruce Cobb
Reply to  Stephen Philbrick
August 9, 2021 1:51 pm

They can’t handle the truth.

Rick W Kargaard
August 9, 2021 12:33 pm

The report is nearly 4000 pages long. An impossible read for most people. It should be critiqued but that is probably only possible if it is broken into sections and critically judged by several people according to their expertise.
Also we need to research the authors to determine their education and relevant knowledge. I researched a few and find that their education and work is primarily in climatology (what is that really) I did find a little background in geology and meteorology which is a vast improvement over what I found with a previous report. But I have just begun.
Volunteers, anyone.
This really needs to be done as this is probably the only evidence likely to be presented to policy makers who I am sure will only skim the abstract.

Tom Abbott
Reply to  Rick W Kargaard
August 9, 2021 4:45 pm

If they had any evidence in those 4,000 pages, we would already know about it.

Rick W Kargaard
Reply to  Tom Abbott
August 9, 2021 7:30 pm

Good point but most people may believe their BS conclusions.

August 9, 2021 1:12 pm

From July 27/2021. Models run hot, sensitivity is off.
————–

U.N. climate panel confronts implausibly hot forecasts of future warming

Next month, after a yearlong delay because of the pandemic, the U.N. Intergovernmental Panel on Climate Change (IPCC) will begin to release its first major assessment of human-caused global warming since 2013.

But as climate scientists face this alarming reality, the climate models that help them project the future have grown a little too alarmist. Many of the world’s leading models are now projecting warming rates that most scientists, including the modelmakers themselves, believe are implausibly fast.

https://www.sciencemag.org/news/2021/07/un-climate-panel-confronts-implausibly-hot-forecasts-future-warming

Dave Fair
August 9, 2021 1:23 pm

It appears they are using “Hockey Stick” paleo reconstructions.

Bruce Cobb
August 9, 2021 1:24 pm

It is unequivocal that human influence has warmed the atmosphere, ocean and land. Widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere have occurred.

And Boom! The SPM starts off with a couple of whoppers of lies. They are simply statements pulled from their nethers. They aren’t based on anything real or even proveable. Pure Alarmist horseshit. There really isn’t any reason to delve further into the cesspool of lies. Perhaps those with stronger stomachs than I will though.

Tom Abbott
Reply to  Bruce Cobb
August 9, 2021 4:50 pm

Yes, they just turned the Lie up to 11.

Reply to  Bruce Cobb
August 9, 2021 9:21 pm

Wait, I thought “human influence” was warming the atmosphere through the capture and back radiation of IR photons by CO2 in the atmosphere, but the amount of warming caused by humans is unknown. How did those same IR photons suddenly start warming the oceans and the landmass too? Those are both definitely not the atmosphere. Sounds like extra work being done from the same energy to me. How does that happen, exactly?

Richard Page
August 9, 2021 1:44 pm

I would like to see a chart showing the page count of the various incarnations of the reports – I firmly believe it’s an exercise in saying less and less using more and more words to do so. AR5 was what, 2000 pages and this monstrosity is over 4,000 pages? I shan’t comment on what’s in the report as I believe there is a wonderful sitcom title that covers it: “Never mind the quality, feel the width.”

Rud Istvan
Reply to  Richard Page
August 9, 2021 2:31 pm

I paraphrase Winston Churchill (the exact quote is in my ebook The Arts of Truth):
The length of the report defends it well from comprehension.

Ron
Reply to  Rud Istvan
August 9, 2021 3:51 pm

As often Sir Churchill had a great insight into politics,

Reply to  Richard Page
August 10, 2021 2:54 am

I would like to see a chart showing the page count of the various incarnations of the reports …

A few months back, when I had way too much “spare time” on my hands, I actually did this exercise purely to (temporarily) alleviate the boredom.

The results were as follows.

FAR (WG1, “The IPCC Scientific Assessment”, 1990) : “Bitmapped / Photocopied” (?), 414 pages, (single) 30.9MB PDF file.
“Climate Change 1992″ (WG1 ,”The Supplementary Report to the IPCC Scientific Assessment”, 1992) : 220 pages, (1) 19.4MB PDF file.
SAR (WG1, “The Science of Climate Change”, 1995) : 588 pages, (1) 53.6MB PDF file.
TAR (WG1, “The Scientific Basis”, 2001) : 882 pages (some blank …), 29.6MB in 16 PDF files.
AR4 (WG1, “The Physical Science Basis”, 2007) : 996 pages, 222.3MB in 23 PDF files (+ 4 pages / 43.5kB of “Uncertainty Guidance Notes”).
AR5 (WG1, “The Physical Science Basis”, 2013) : 1552 pages, 388.7MB in 22 PDF files.

AR5 (WG2, “Impacts, Adaptation, and Vulnerability”, 2014) : 1820 (?) pages, either 7 (large, “Part A / B” + …) or 40-50 (small, “Chapter” + “SM” + …) PDF files.
AR5 (WG3, “Mitigation of Climate Change”, 2014) : 1454 (?) pages, available as 1 (!) 50MB PDF file (+ “Errata” + ???).
AR5 Synthesis Report (IPCC, “Climate Change 2014: Synthesis Report”, 2014) : 167 pages, (1) 14.5MB PDF file (+ 3 pages / 61kB of “Errata”).

SRCCS (2005) : 443 pages, (1) 23.9MB PDF file.
SR1.5 (2018) : 562 pages, 7 PDF files.
SROCC (2019) : 702 pages, 10 PDF files.
SRCCL (2019) : 874 pages, (1) 28[.0]MB PDF file (+ 12 pages / 316kB of “Errata”).

– – – – – –

For AR6 the “full” report (minus Supplementary Material ???) is available on the IPCC website as a single ~242MB file.

Downloading the individual “SPM + TS + Chapter (x13) + SM (x13) + Annex (x7) + FAQ” files took up ~310MB of my local hard disk.

I have not had time to read all of it … yet …

Tom Abbott
Reply to  Mark BLR
August 10, 2021 5:36 am

That looks like a labor of love, Mark. 🙂

Thanks for the information.

John R Phillips
August 9, 2021 2:11 pm

I downloaded the report. It is incomplete and is therefore not ready for a truly independent review. Most of the detailed data, figures, plots, etc are not yet in the report.

Reply to  John R Phillips
August 10, 2021 3:15 am

Most of the detailed data, figures, plots, etc are not yet in the report.

Yes they are.

For example, though the “Chapter 1” PDF file (224 pages total, ~19.5MB) starts with 8 pages of “corrigenda” and the main text includes formatting like “[START FIGURE 1.1 HERE]”, the actual figures are currently grouped together at the end of each file (from pages 184 to 224 in the case of Chapter 1).

The other files are similar, but they are only the “Accepted version …” of the WG1 report, and are “… subject to final edits”.

NB : Only the SPM is an “Approved Version”, and even that “is subject to final copy-editing”.

August 9, 2021 2:13 pm

Since 1988,
there have been 32 prior IPCC warnings
of a coming climate disaster.

Once every year.
I don’t listen.
Because the weather here in Michigan
was still too cold.
After 32 consecutive annual warnings
of global warming doom.

So far 2021 has been our coldest year since the 1970s.

We’ve lived in the same home since 1987,
and four miles south for seven years before that.
It’s easier to notice climate change
if you live in the same place
for a long period of time

We love global warming here in Michigan.
The small amount of warming since the 1970s
was appreciated … and then it disappeared
so far this year.

Who stole it?
The Russians?
Aliens?
I demand an investigation !
We want our global warming back.

Thomas Gasloli
Reply to  Richard Greene
August 9, 2021 8:37 pm

Apparently Trump took it with him when he moved out of White House.🤪

ThinAir
August 9, 2021 2:28 pm

There is perhaps a partial ray of truth in the SPM on page 23, that counters the much exaggerated media claims lately about heat waves and extreme temperatures. If I am reading right they are saying we can expect only small increases in temperature and frequency, even with their biased-modeling results for average temperature increases.

For example a 2.6 degrees C hotter heat wave in the future (under an global average 2C hotter earth), vs the 1.5 C hotter heat waves we have today (under the global average 1 C hotter earth we have at present), versus that so very ideal (and very chilly) “pre-industrial” time, that no one really wants to return to — they they are honest.

But not doubt the Columbia Journalism Climate Alarmist Program, will ignore that logic.

Tom Abbott
Reply to  ThinAir
August 9, 2021 4:57 pm

“(under the global average 1 C hotter earth we have at present)”

I don’t think we have a 1.0C hotter Earth at present. That happened in 2016, according to NASA/NOAA. It is currently 0.5C cooler than 2016, according to the UAH satellite record.

The UN obviously doesn’t recognize the UAH satellite chart:

comment image

Ron
Reply to  Tom Abbott
August 9, 2021 5:33 pm

Naw, even GISTEMP and BEST are at least 0.5-0.6C cooler than at the peak in 2016. They can’t do everything otherwise it becomes too obvious even for the non-critical mind. Though they are trying a lot.

Tom Abbott
Reply to  Ron
August 10, 2021 5:41 am

I think a lot of these alarmists have “warming” in the back of their minds all the time, and always assume we are at the hottest temperature in human history because of CO2, and never actually look at a temperature chart.

If they looked at a temperature chart, that might burst their “hotter and hotter” bubble.

alastair gray
August 9, 2021 2:32 pm

It’s worse than we thought . I’ve only read the introduction and they have gone into more unsubstantiated hysterical alarm than we could possibly have imagined . It is “virtually Certain” that this is and even bigger pile of dross than even Michael Mann, Attenbugger and the Oreskes babe could have conceived together. Read and weep for the planet at the mercy of these idiots

Curious George
Reply to  alastair gray
August 9, 2021 4:11 pm

Can I legally withdraw my financial support for the UN via my taxes?

Tom Abbott
Reply to  alastair gray
August 10, 2021 5:45 am

“Read and weep for the planet at the mercy of these idiots”

Isn’t that the truth!

JimW
August 9, 2021 2:59 pm

Horrifying to find Einstein right again: There are only two things infinite- the universe, and human stupidity. And I’m not so sure about the universe.

This “The report finds that large-scale carbon-dioxide removal from the atmosphere might indeed be a way of reducing temperatures” is unsupported by any examination of history for the last 550 million years, and is unsupported by theory.

There has never been a temperature reversal preceded by a CO2 change. And the exponential decline in the GHG effect of CO2, noted by Arrhenius, now has correct numbers, and the next doubling to 800 ppm will increase its GHG effect by less than 2%.

Clyde Spencer
Reply to  JimW
August 9, 2021 9:23 pm

“The report finds that large-scale carbon-dioxide removal from the atmosphere might indeed be a way of reducing temperatures”

But there is no empirical evidence to support the idea that significant reductions in anthropogenic CO2 in 2020 had any impact!

https://wattsupwiththat.com/2021/06/11/contribution-of-anthropogenic-co2-emissions-to-changes-in-atmospheric-concentrations/

JimW
Reply to  Clyde Spencer
August 9, 2021 10:01 pm

Yes, Clyde, and it’s gotten worse since my post of
https://wattsupwiththat.com/2021/06/15/the-disappointing-nature-of-some-science-writing/
Now Wired magazine, a favorite of mine, has joined the chorus with its paean to the IPCC – https://www.wired.com/story/the-un-climate-report-all-is-not-well-but-all-is-not-lost/
I’ve sent an email – no reply offered – but it’s unlikely to see the light of day.

My post included this lament: “The article quotes without comment Arizona State University climate scientist Randall Cerveny who expresses disappointment that “We had had some hopes that, with last year’s COVID scenario, perhaps the lack of travel [and] the lack of industry might act as a little bit of a brake. But what we’re seeing is, frankly, it has not.”

BTW don’t termites produce enough methane to deserve mention? I mean, a lot more than cows!

Richard Page
Reply to  JimW
August 10, 2021 4:05 am

Termites produce a staggering amount of methane, but eliminating them wouldn’t achieve these people’s goals of imposing vegetarianism on us all. From the start, this has been a concerted assault from a tiny lunatic fringe group that got a little bit of mainstream traction and want us all to live the same way they do so they will be justified – that the whole world will know that their lifestyle was correct all along.

Herbert
Reply to  Clyde Spencer
August 10, 2021 3:53 am

Clyde,
To the same effect,although he does not join the dots in considering the implications,here is Dr. Alan Finkel recently retired Chief Scientist of Australia in last April’s Quarterly Essay,“Getting to Zero”-
“The message these air samples carry is indeed grim(speaking of the Mauna Loa readings and similarly,Cape Grim at the north-western tip of Tasmania)…
As Figure 2 shows in each of the forty-five years since record keeping began the carbon dioxide concentration has risen.
I’ve often looked at this graph, eagerly hoping to see a downturn.It’s not there.
Even the economic downturn from the CoVid 19 pandemic has not been enough to slow it…”
As you say,significant reductions of human induced emissions produced negligible impact.
Willis has commented on this outcome.

Herbert
Reply to  Clyde Spencer
August 11, 2021 2:11 pm

Clyde,
Thanks.I have re-read your 11 June post.
Your conclusion that the El Niño temperature may be the prevailing factor in driving the annual variations of CO2 looks more likely than the “default position” that it is anthropogenic emissions are the driver.
That takes me to the Global Carbon Budget papers, Friedlingstein et al 2020, Friedlingstein et al 2019 and the Le Quere et al papers from 2008 to 2018.
The latest has 68 co-authors!
Interestingly Friedlingstein et al 2020 claims a near balance between sources and sinks but then lists three instances of uncertainty, especially in the Southern Ocean readings.
My gut feeling is that the Carbon Budget is not as clear cut (within one sigma variation and 68% certainty etc.)as these papers present and there are still significant uncertainties.

August 9, 2021 3:10 pm

Efforts to model the climate predictively have not been a resounding success to date. However another thing that can be mathematically modelled with much more accuracy is the precise nature of the climate alarmist narrative, and even the detailed contents of IPCC reports. These can be predicted even more reliably than elections in the former Soviet Union.

Curiously, the climate and earth system plays no role in this modelling of alarmism. Instead, the main criterion needed to model the catastrophist narrative is political expediency and success in grabbing socioeconomic power. This scenario is inevitable from the community dynamic of a social ape.

So how is climate alarmism modelled? We can first model what the alarmist narrative would NOT consist of. Take these examples for instance.

Scenario 1: climate change is caused by humans. It is mild in nature, and modestly beneficial, boosting plant growth and harvests and extending habitable regions closer to the poles.

Such scenarios will be stillborn, stamped out violently at inception. Because there is no socioeconomic benefit to “congratulate” human society on its trajectory of development. Such narrative would be marginal and irrelevant.

Scenario 2: From an optimistic scenario, ignored by everyone, we can move to a deeply pessimistic one that would equally be ignored by everyone. This is the scenario that human effects on the climate and biosphere are disastrous and have already passed the point of no return. Catastrophe is already locked in and all there is to do is “eat, drink and be merry for tomorrow we die”. Note that a Norwegian scientist recently published such a paper, greeted by a torrential cyclone of outraged jowl-flapping. This deluge swept away the study so utterly that it has vanished from the web and I can’t find it. Passed into oblivion. Cancelled. Clearly a story of tragedy and inevitable doom is forcibly rejected by power brokers. An alarmist narrative needs to contain at least some (albeit manufactured) ray of hope.

Note that scientific considerations of climate itself are totally absent from the factors determining the nature of the alarmist narrative. Let’s move on to some less extreme candidate narratives.

Scenario 3. Humans have definitely changed climate and environment. There are harmful and damaging aspects of this influence. But the overall effect is ambiguous with some beneficial elements. And overall it’s marginal whether the anthropogenic climate effects are a significant concern. Climate political action should be focussed on local specific harmful threats, disparate and isolated in far-flung places.

This scenario can transiently exist but is unstable. It is quickly and inexorably pulled toward a narrative of pervasive and universal harm from human climate effects. Any suggestion of positive human effects on the earth system are quickly snuffed out as a risk and liability to the path to alarmist power. In the actual history of climate politics this transitional stage has already come and gone.

Scenario 4. Humans have pretty much trashed the planet. There is a slender chance to partly mitigate the oncoming catastrophe, but popular mitigation policies are ineffective and misguided. Doom is more or less locked in and humanity itself needs a major haircut to save the planet. Note this is the position of Michael Moore in his film “Planet of the Humans”. It provokes a mixed response but ultimately is rejected and marginalised by the power brokers.

So if all these scenarios are wide of the mark, what is the ideal part of the alarmist phase space that makes it an effective path to power. What is the “sweet spot” of climate damnation and salvation? It’s scenario 5.

Scenario 5. Mea Culpa! Lash self with chain like a good pilgrim. We bad humans have done grievous harm to our Mother Earth. All have sinned and fall short of the glory of Gaia. But … here’s the clever balancing act. Yes there is serious harm locked in – but at the same time there is hope of salvation and remedy. However “narrow is the path that leads to life”: the remediation of climate and environment require profound economic and political changes and big sacrifices in lifestyle.

This is the sweet spot, the attractor to which environmental alarmist will be inevitably sucked into as over the event horizon of a greeny-black hole. Hope must be there – but attaining it must be super hard. It must require complete upheaval of countries, societies, economies and lifestyle. Even our diet must change. Looks familiar? Welcome to 2021.

So – it turns out that the direction of climate alarmism and the detailed contents of the next IPCC report (can’t remember the number already) can be predictively modelled, with accuracy and robustness. And without any reference to any scientific issue relating to climate itself. Whatsoever.

Curious George
Reply to  Hatter Eggburn
August 9, 2021 4:17 pm

Regarding Scenario 2, have you tried the Wayback Machine?

old engineer
Reply to  Hatter Eggburn
August 9, 2021 7:51 pm

Hatter Eggburn-

IMO you have provided the most cogent comment of this post. It explains why skeptics data based arguments never win the day. And why it is probably useless to comment on AR6. Why? To paraphrase what you wrote:

The climate and earth system plays no role in …[climate] alarmism. Instead, the main criterion [in this] catastrophist narrative is political expediency and success in grabbing socioeconomic power.

It matters not one wit if “Climate Change” is real or not.

JimW
Reply to  Hatter Eggburn
August 9, 2021 10:12 pm

Welcome to … what, 1984?

August 9, 2021 3:17 pm

Somehow I think there will be no AR7 😉

Tom Abbott
Reply to  E. Schaffer
August 10, 2021 5:51 am

Yeah, how much more alarmist can they get?

Ron
August 9, 2021 3:19 pm

So insane:

Just noticed that even the cooling until 1910 and the cooling period in the 1960-70’s is nearly gone from figure SPM.1b).

All pretty flat.

Are you f***ing kidding me?

https://www.woodfortrees.org/graph/hadcrut4gl

Reply to  Ron
August 10, 2021 12:18 am

It is reasonable for current climatologists to think the climatologists of the past were completely incompetent who’s measurements are worthless.
They know about climatologists. They are climatologists themselves.

Ron
Reply to  M Courtney
August 10, 2021 9:12 am

I disagree. Scientist before politicization of a topic might have actually done a better job than the politicized ones.

Science before and after corruption.

Sociology would be another field where that could be observed.

Only for the current generation your statement makes sense cause they believe everybody was as corrupt as they are.

Ron
Reply to  Ron
August 10, 2021 9:13 am

Corrupt and/or incompetent I would like to add. Though that doesn’t matter for the results, just the intentions.