Climate of conversation

In a nutshell

Free speech is under fire around the world and nowhere does it face greater threat than in the bitter dispute over man-made global warming.

The GWPF carries a thoughtful piece on free speech by Adam Perkins, who explains why it’s vitally important to our practise of science:

… debate at King’s College London, where I have worked since 2007, is becoming restricted. A debate held this month at King’s between Yaron Brook and Carl Benjamin was stopped by masked thugs bursting into the lecture theatre.

Perkins opens his discussion of free speech with pertinent comments by notable figures:

A quick Google search suggests that free speech is a regarded as an important virtue for a functional, enlightened society. For example, according to George Orwell: “If liberty means anything at all, it means the right to tell people what they do not want to hear.” Likewise, Ayaan Hirsi Ali remarked: “Free speech is the bedrock of liberty and a free society, and yes, it includes the right to blaspheme and offend.” In a similar vein, Bill Hicks declared: “Freedom of speech means you support the right of people to say exactly those ideas which you do not agree with”.

Which remind me of Churchill’s remark in Parliament:

Everyone is in favour of free speech … but some people’s idea of it is that they are free to say what they like, but if anyone says anything back, that is an outrage.

Perkins asks why do we specifically need free speech in science? Surely it’s enough to talk about our data and our instruments? But, he says:

These are merely tools that help us to accomplish a far greater mission, which is to choose between rival narratives, in the vicious, no-holds-barred battle of ideas that we call “science”.

Other snippets:

  • There is no authority who decides what is a good idea. – Richard Feynman
  • Science is not about finding the truth at all, but about finding better ways of being wrong. – Tom Schofield
  • … the tendency to silence scientists with inconvenient opinions has been labelled Lysenkoism since it provides the most famous example of the harm that can be done when competing scientific opinions cannot be expressed equally freely.

Physicist Richard Feynman was a member of the NASA committee investigating the 1986 Challenger disaster and refused to be silenced. He demonstrated that the O-rings became stiff when cold and caused the explosion. In the report on the disaster he said:

For a successful technology, reality must take precedence over public relations, for nature cannot be fooled. [emphasis added]

Perkins implores us

stand up for the principle that no one has the right to police our opinions.

There’s more, so do tuck in.

Challenge the warmsters

You may form the opinion, as I have, that climate science is not amenable to refutation by a single experiment, observation, paper, or even a debate, no matter how free. However, it will always be crucially important to take every opportunity to challenge errors in the assertions of warmsters, whether of data or reasoning, not because the assertion might help to prove or disprove the overall thesis, but simply because it’s incorrect.

But what makes this climate hydra such a slippery eel is, as many of you have said, that there is no properly formed hypothesis behind the warmsters’ case, which means it is perfectly unfalsifiable. But there is a proper answer to their case, and that is to discover and to enunciate the questions they fail to answer. As I see it, that will demonstrate the paucity of their evidence and the falsity of their hypothesis.

For example, what good reason supports their choice of human emissions to explain the apparent shortfall in forcings while trying to account for the global increase in surface temperature from 1951 to 2010? As IPCC say:

In conclusion, although some inconsistencies in the forced responses of individual models and observations have been identified, the detection of the global temperature response to GHG increases using average responses from multiple models is robust to observational uncertainty and methodological choices. It is supported by basic physical arguments. We conclude, consistent with Hegerl et al. (2007b), that more than half of the observed increase in GMST from 1951 to 2010 is very likely due to the observed anthropogenic increase in GHG concentrations. – WGI AR5 (2013), p. 884

So, regardless of repeated references to inconsistencies between models, discrepancies between models and observations, “underestimated uncertainties”, “higher transient response” of some CMIP5 models to GHGs than in the real world and the fact that “some CMIP5 models have a higher transient response to GHGs and a larger response to other anthropogenic forcings than the real world,” IPCC decides our emissions had a big hand in half the warming.

Significant gaps in our knowledge of climate are generally acknowledged to include the sign and magnitude of cloud feedback, good coverage of whole-ocean temperatures and heat content, the magnitudes of many known but poorly-understood climate phenomena such as galactic cosmic ray (GCR) formation of clouds and aerosols, and many more, so there’s plenty to work on.

Ask until the cows come home

Knutson et al. (2013) demonstrate that observed trends in GMST are inconsistent with the simulated response to natural forcings alone, but consistent with the simulated response to natural and anthropogenic forcings for all periods beginning between 1880 and 1990 and ending in 2010, which they interpret as evidence that warming is in part attributable to anthropogenic influence over these periods. – WGI AR5 (2013), p. 883

Yes, but that’s not the only possible interpretation, is it? They choose that one because it’s part of their founding document — they are required to find human causation for climate change.

So, we should present these and other unanswered questions and straight-out deceptions until the cows come home, remembering that our audience is not the warmsters—we should address the voters who can kick out the gullible, negligent politicians. Why are they negligent? Because they took insufficient care to seek counsel from both sides of a demonstrably strong and continuing controversy.

All the while we should be endlessly, it goes without saying, creative, courteous and light-hearted.

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Simon
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Simon

What’s a warmster? Does it include all of these scientific organisation?
A good theory fits the facts. You have to either prove that the facts are wrong or propose an alternative theory that is scientifically valid. Good luck with that.

Stephanie Hawking
Guest
Stephanie Hawking

The oil companies have accepted the science. More greenhouse gas more greenhouse effect more warming. There is no scientific debate.

The question is, when there is an existential threat to human civilisation, should those who want to keep burning fossil fuels be permitted to tell lies?

And does it matter?

With more frequent severe weather events occurring more people are demanding action.

Even so, it’s going to get a lot worse before it gets better.

Simon
Guest
Simon

Of course there is theory and it is well understood. If you want a single paper than this is the place to start:
Arrhenius (1897): On the Influence of Carbonic Acid in the Air Upon the Temperature of the Ground”. Publications of the Astronomical Society of the Pacific. 9 (54): 14

Andy
Guest
Andy

Fun fact. Arrhenius was a board member for the Swedish Institute for Racial Hygene in Stockholm

There was no scientific debate on the science of eugenics at that time

For some reason we don’t hear much about it now,

Mack
Guest
Mack

“The oil companies have accepted the science”.
Of course they have, Stephanie,….they revel in “the science”. Exxon provides sponsorship and teeshirts to the gullible loons who turn up for their regular blabfests. They like this million dollar racket….anything to keep the price of petrol and oil up for the sucker consumer…let all the looney believing govts. put more tax on petrol in any form of ETS or anything…it provides a permanent “tax take” giving the companies improved revenue streaming.
But they are oil AND GAS companies, Stephanie. GAS… the stuff they want you to burn for ELECTRICITY.
Oh….Electricity, the way of the future for cars….low “emissions”…yeees…let’s worship the “greenhouse” religion. …because that evil high “emission” coal is so abundant and cheap….and so damn compeditive.
The oil and gas companies think you looney believers are a joke. I know a friend who’s talked to a few of their top executives from Chevron
It’s liquid fuel industry verses the solid fuel industry, Stephanie…nothing to do with “the science”.

Simon
Guest
Simon

You have bought this “fun” fact up many times Andy. It has nothing to do with the scientific validity of Arrhenius’s climate work.

Mack’s global conspiracy is getting bigger and bigger all of the time…

Mack
Guest
Mack

“Mack’s global conspiracy is getting bigger and bigger all of the time….
Nah, Simon, you’ve obviously been born yesterday….and haven’t a clue of how easily mass indoctrination of a populace by a govt. can take place…especially with a fear factor.
For well over 40 yrs we’ve been fed this “climate change” crap, and every fearmongering kook prediction has failed to eventuate. So no conspiracy, Simon…..just being old enough to be able to see the whole AGW scam in its entireity
You’re obviously thicker than Paul Watson, here…
https://www.youtube.com/watch?v=silfiTY32xo

Mack
Guest
Mack

Here’s your mass indoctrination by the govt. at work in NZ, Simon…
So is this video real, Simon? …or just some fake conspiratorial video?..
https://www.nzherald.co.nz/climate-change/news/video.cfm?c_id=26&gal_objectid=11634737&gallery_id=160389

Simon
Guest
Simon

So… Did John Key’s National Government start this mass indoctrination programme? And it has been continued by the incoming government? How does that work? Is there a secret agreement between all of the parties in the House? To what end? Is it all about growing vegetables and walking to school or is it much deeper than that?

Mack
Guest
Mack

“Did John Key’s National Government start this mass indoctrination programme?” No ,Simon, the “greenhouse” hypothesis would have gradually been phased into the syllabus’s of all the Western schools around about the early ’80s , I would think. …could have been the late ’70s, ..somewhere there. It really is a bi-partisan, introduction into the schools, because both left and right support this piece of crap science….it’s EVERY politician’s dream….tax the air, at the same time being caring and responsible for saving the planet. We never heard of it, when I was at school. “And it has been continued by the incoming government?” Actually, to be honest, I really don’t know. I ‘ve got 2 primary school grandchildren at the moment, and their father tells me we haven’t noticed them receiving any of this AGW nonsense….yet. I have hope that it may have even been taken out of the curriculum….fingers crossed. It could have been fazed out a bit by the Bill English government? But then we’ve got this dopey woman, (with a rampant Greens), running the country, who considers it to be her “nuclear free moment”….so anything’s possible. Growing vegetables and walking to school… Read more »

Ian Cooper
Guest
Ian Cooper

My brothers kids were at primary school about 10 years ago when one of them asked me about ‘global warming.’ They were obviously being taught about it at school but wanted my opinion on the subject. They have slept well on that score, only worrying about the real problems of the world that they can solve since. In effect I confirmed their beliefs that their teachers didn’t know it all, especially if uncle disagreed!

Ian Cooper
Guest
Ian Cooper

I just watched your video link Mack. Had to laugh at some of the solutions those poor deluded kids were offering to overcome those nasty gases causing the world to overheat! Growing vegetables at home. Something a lot of people did when I grew up out of necessity, and many still do in our low wage economy. Walking everywhere. It wasn’t a matter of choice back then, unless you had a bike to get around on. Funnily enough when were old enough and earning money, we bought motorbikes & cars, not because we were lazy but because we wished to explore the wide wide world outside of our village/town/city. We walked & rode to school on bikes in our thousands everyday. Compare that today where I see big strapping high school lads being dropped off at the gate by their mothers, usually in a SUV! Ohh the ignominy of it all. We did all of those things back in the 60’s & 70’s but the temperature kept rising! This is the rot that young minds are being fed by over-zealous teachers. I felt that the kids weren’t truly inspired though, thankfully, so there… Read more »

Andy
Guest
Andy

You have bought this “fun” fact up many times Andy. It has nothing to do with the scientific validity of Arrhenius’s climate work.

Of course the greenhouse effect and climate sensitivity is settled science

97 scientists agree

What is ECS again? Something between 1 degree C and 4. deg C? Same as it was 30 odd years ago?

i.e the same value that was determined by a committee back then

#settledscience

Ian Cooper
Guest
Ian Cooper

I’m sure that I have read somewhere that Arrhenius produced another climate paper near the end of his life that refutes the basis of his earlier work in this field, but it has only been published in German and isn’t well known. I will have to do some digging to see if my memory is still what it used to be.

Mack
Guest
Mack

Apologies for a couple of bad spelling mistakes in my comments.
compeditive…..competitive
fazed……phased.
My old steam-driven computer hasn’t got a spell check.
I’ve mentioned this lousy spelling to Louis Hissink , here…
https://jennifermarohasy.com/2011/03/total-emissivity-of-the-earth-and-atmospheric-carbon-dioxide/#comment-478001
Simon and Stephanie…you should read the rest of that entire thread, too….for, as some people say… “You might learn something”.

Andy
Guest
Andy
Kleinefeldmaus
Guest
Kleinefeldmaus

@Simon on April 30, 2018 at 12:34 pm re Arrhanius and further to Ian Cooper on May 2, 2018 at 11:30 am this might be of interest:- The Shattered Greenhouse: How Simple Physics Demolishes the “Greenhouse Effect”. Timothy Casey B.Sc. (Hons.) Consulting Geologist Some former elements of this article such as the laser experiment, radiation budget commentary, and the UHI implications are to be later reproduced in an additional article concerning the mid-20th century revival of the “Greenhouse Effect”. This notice will be removed when the new article is uploaded. Abstract This article explores the “Greenhouse Effect” in contemporary literature and in the frame of physics, finding a conspicuous lack of clear thermodynamic definition. The “Greenhouse Effect” is defined by Arrhenius’ (1896) modification of Pouillet’s backradiation idea so that instead of being an explanation of how a thermal gradient is maintained at thermal equilibrium, Arrhenius’ incarnation of the backradiation hypothesis offered an extra source of power in addition to the thermally conducted heat which produces the thermal gradient in the material. The general idea as expressed in contemporary literature, though seemingly chaotic in its diversity of emphasis, shows little change since its revision… Read more »

Mack
Guest
Mack

Yes, hopefully there’s a realisation, that trying to prevent flatulance in the poor cows of NZ, in order to control this planet’s temperature,.. much like divining the weather examining chicken entrails….we’ve finally reached peak stupid.

Maggy Wassilieff
Guest
Maggy Wassilieff

@Ian Cooper

Yes Arrhenius did publish another paper pulling back from his earlier view on Global Warming.
(I think Angstrom had pointed out some errors in his thinking).

Here’s a translation and a commentary of his 1906 amended view.

https://www.friendsofscience.org/assets/documents/Arrhenius%201906,%20final.pdf

Ian Cooper
Guest
Ian Cooper

Excellent stuff Maggy and Kleinefeldmaus. Interesting to see how the ‘problem’ was treated a hundred years ago compared to situation now. Free of the hyperbole those people just got on with the science to get to the answer and were ready concede earlier errors to advance the science.

Good to see my memory is not playing tricks on me.

Stephanie Hawking
Guest
Stephanie Hawking

Maggy Wassilieff. If you looked at normal science sites instead of your favourite crank sites you would know that Angstrom was wrong – the more CO2 the greater the greenhouse effect, and Arrhenius’s calculation was pretty much within the present range of climate sensitivity. Of course Arrhenius in 1896 had no idea we would burn the amount of fossil fuel we have. We have about 20 years to reduce net emissions to zero. Staying within 2C is a faint hope. New Zealand is up to its ears in “waffle”, largely because farming accounts for nearly half the GHG emissions. And emissions have been increasing, instead of decreasing as required morally, and ethically under the Paris agreement. Electricity is already nearly all renewable so not much room to more there, but worth decarbonising completely. Not that difficult. Wind turbines are around 12MW now. We could do it. Transport is the only other sector where the technology is available now to reduce emissions. What does National want to do? Find more carbon to burn. C + O2 = end of civilisation. John Key typified National’s attitude to the clear warnings from the science: buy a… Read more »

Simon
Guest
Simon

Did you actually read the 1906 Arrhenius paper? It’s an attempt to quantify the greenhouse effect of water vapour. In no way it is a retraction.

Andy
Guest
Andy

I’m looking out the window at snow down to lake level and people still expect me to believe that we only have 20 years to solve “global warming”

Maggy Wassilieff
Guest
Maggy Wassilieff

@Simon/Dennis Horne

Yes of course I read the Arrhenius paper.. and had done so yonks ago also.

Remember Arrhenius had a theory about what caused the Ice Ages… and set about with his “chemical CO2 theory”.
Such an influential man… that poor old Milankovitch was given the bum’s rush for quite a few years after he expounded his theory about change’s in Earth’s orbit.

Well, facts will out… and Poor old Arrhenius was dead wrong about the cause of Ice ages.

Hey, look at this new paper showing what happens to Global Temperatures when you don’t use dodgy data…
Temperature trends with reduced impact of ocean air temperature
http://journals.sagepub.com/doi/10.1177/0958305X18756670

Jacob Jonker
Guest

The Terrible Trolls, they’re everywhere. Other than some kind of inducement, their obsessive compulsive impelling expellations are a mystery to me.

Simon
Guest
Simon

They were both right, Milankovitch cycles were the forcing and the water vapour effect and ocean storage of CO2 is the feedback.

“Coastal stations and hill stations facing ocean winds are normally more warm-trended than the valley stations that are sheltered from dominant oceans winds.” I would have thought that was rather obvious, unless you believe that oceans are not warming.

Mack
Guest
Mack

“…….required morally, and ethically under the Paris agreement.” says Stephanie.
Aaahahahahahaha….you talk about morals and ethics ? Stephanie.
Yeah, it’s moral and ethical to take children who still believe in Santa Claus…and then fill their heads with alarming, “planet in crisis”, pollution, “greenhouse gas”, ozone hole, weather armageddon, polar bear, ice melting, bullshit. You wonder why our teenage suicide rate is so high in this country, Stephanie?
https://www.nzherald.co.nz/climate-change/news/video.cfm?c_id=26&gal_objectid=11634737&gallery_id=160389
Yeah, and it’s really moral and ethical for these Koolaid saturated wankers, to jet half way round the world for COP 22, at a $1000/ night resort in Marrakesh….when there are children in the world starving.

KillerBean
Guest
KillerBean

Stephanie:
“We have about 20 years to reduce net emissions to zero.”
You have hit the nail squarely on the head with that one, that is the reason I am skeptical about climate change.
I am in my mid 50’s, when I was in junior school I was told that the world would run out of food within 20 years and we would all starve, it didn’t.
When I was in high school i was told oil would run out within 20 years, it didn’t. Then I was told there would be no ice caps by the turn of the century, the ice caps are doing just fine.
If the global warming theory was true the scientists would not have to fiddle the data to make it fit, its a complete load of tosh.

The UK is the only country in the world that is looking forward to global warming, so they changed the name to climate change to try and fool us.

Wind turbines? Are you serious?

Jacob Jonker
Guest

If the warmistas really believed in global warming they would not be jetting around the world living it up at other people’s expense. It’s a racket!

Stephanie Hawking
Guest
Stephanie Hawking

Maggy Wassilieff: http://journals.sagepub.com/doi/10.1177/0958305X18756670

The implication from this is therefore that new and fast-changing heat balances over the Earth are better captured in temperature data when no large volume of water as larger lakes or oceans can act as a heat buffer absorbing and delaying faster changes in the heat balance over the surface.

Even surrounded by water, as NZ is, that “can act as a buffer absorbing and delaying faster changes in the heat balance over the surface”, the NIWA 11-station series raw data shows a temperature increase of nearly 1C over 77 years.

Simon
Guest
Simon

IPCC AR5 Summary for Policymakers (which you have quoted many times): “It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in GHG concentrations and other anthropogenic forcings together. “

Mack
Guest
Mack

“It is EXTREMELY LIKELY that…..”
Simon bashes the ol’ IPCC bible again.
It’s the same old speculative crap, year after year, we get from you AGW brainwashed “intellectuals”.
All your “scientific” papers are liberally sprinkled with it….”is likely to..”… ” is expected to…”…”could”….”should”…..”would”….”may”….”will possibly”…..
Yeah, it’s extremely likely that pigs will grow wings and fly, too.

Simon
Guest
Simon

These words have precise and specific meanings related to the probability of an event occurring. I find it quite verbose reading as well; blame the delegations that argue over the precise wording of individual paragraphs. Richard likes to quote the IPCC policy documents so it is fair enough to quote them back to him.

Alexander K
Guest
Alexander K

I am well into my eighth decade, so have seen many changes in fashionable nonsense promulgated by supposedly well-educated men and women such as Paul Erlich, whose Malthusian prognostications were pushed at an entire generation of students in the the latter half of the twentieth century and have since been proven to be not just mistaken but utterly wrong as the years have passed. About the only new tactic employed by the doomsayers is that they have extended the time span of their predictions to ensure that they will be dead and gone long before the time when their predictions are due to be fulfilled and thus put themselves beyond any possibility of ridicule.

Stephanie Hawking
Guest
Stephanie Hawking

More than 30,000 scientists publishing in the field of climate science, experts in the field, have judged that the evidence is unambiguous: human activity is causing global warming and climate change. The IPCC has done review of the literature. To maintain the climate within changes we can adapt to, we must reduce our GHG emissions now.

If you don’t believe that then you have a problem understanding science and how it works.

https://insideclimatenews.org/news/26122017/climate-change-science-2017-year-review-evidence-impact-faster-more-extreme
Climate Change Is Happening Faster Than Expected, and It’s More Extreme. New research suggests human-caused emissions will lead to bigger impacts on heat and extreme weather, and sooner than the IPCC warned just three years ago. DEC 2017

If this link to NATURE does not work I’ll give you a code:
https://www.nature.com/articles/d41586-018-04931-6?
Can the world kick its fossil-fuel addiction fast enough? APRIL 2018
Clean energy is growing quickly. But time is running out to rein in carbon emissions.

Mack
Guest
Mack

Yeah, that’s right, Simon….you’ve even got the English language mathematically explained out by calculation ….
“Extremely likely”….something like 93% isn’t it, Simon?
“Very likely”….some other number….”Likely”….another number…..wow, that’s so scientific.
Bloody marvellous, that all the scientists on this planet have sorted these numbers out. An amazing feat of,collection, interpreting and organising this mathematical “fact”.
You need to graph it out, Simon, … use TRUTH on the y axis, and LIE on the x axis.

Mack
Guest
Mack

TRUTH could be on the x axis, and LIE on the y axis, Simon.
You work it out….you’re much more intelligent than me.

Maggy Wassilieff
Guest
Maggy Wassilieff

@ The entity calling himself Stephanie Hawking re your May 6 posting to me. Yes, I have always been puzzled as to why NZ’s Av. annual temperature trend was so much greater than that of the World’s global temperature trend. 7SS (version1) had NZ at 0.97 +/- 0.26 C/century 7SS (version 2) was 0.91C/century 11SS is 1.0C for period 1931-2008 = 1.3C/century These temps are running at 50-100% more the the Global (land & Ocean) surface T of 0.64C/century (IPCC 2013: 0.85C in period 1880-2012). Now, we know that about 0.7C of NZ’s warming trend occurred between 1945 and 1956, and there was very little change in mean T (0.06C/decade) between 1970 and the 2010s. (McGlone, M.; Walker, S. 2011: Potential effects of climate change on New Zealand’s terrestrial biodiversity and policy recommendations for mitigation, adaptation and research. Science for Conservation 312. Department of Conservation, Wellington. 77 p) – p.8. So how to explain NZ’s rather peculiar warming trends. It doesn’t seem that our seas/oceans are having a large moderating/buffering effect….. could they be responsible for the warming? Some years back we only heard about ENSO effects on our climate; but now some… Read more »

Stephanie Hawking
Guest
Stephanie Hawking

I’m not satisfied that the science is settled in favour of CO2 as the control of our present and past climates.

Climate concerns the statistics of weather. Natural variability makes if difficult to extract the signal of more energy in the climate system. Global mean surface temperature is a construct, like “average woman”.

The GHGs are transparent to incoming shortwave radiation (sunlight) and opaque to outgoing longwave radiation (infrared). Basic undisputed physics that explains all the warming.
https://www.youtube.com/watch?v=ujkcTZZlikg
Richard Alley – 4.6 Billion Years of Earth’s Climate History: The Role of CO2
National Academy of Sciences. June 2015

Mike Jowsey
Guest
Mike Jowsey

Alexander K – Not quite as long in the tooth as you, sir, I agree. The Malthusians have extended the timeframe. So when they are dead, they care not as much. As for the living, ask any climate guru “what climate is perfect for the earth and are we there yet?”

Mack
Guest
Mack

“…..transparent to incoming shortwave……opaque to outgoing longwave…..” parrots Stephanie.
I just love hearing those words…..”transparent” and “opaque”. They sound so sciencey, yet “BASIC”.
Atmospheric quantum thermodynamics for dummies……or parrots.
“transparent in….opaque out”
“transparent in….opaque out”
“transparent in…..opaque out” (squawk)
Polly want a cracker.
“minus 18C ….plus 15C”
“minus 18C…..plus 15C”
“minus 18C…..plus 15C” (squawk) (squawk)
“the Greenhouse”
“Greenhouse”
“Greenhouse” (squawk) (squawk)
“greenhouse”.
“transparent in….opaque out”
“transparent in…..opaque out” (squawk)
“blanket”
“blanket’
“blanket” (squawk) (squawk)
You’re a well trained parrot from the NZ “education” system, Stephanie.

Andy
Guest
Andy

The IPCC only attribute “most” of the warming since 1950 to anthropogenic GHG emissions as far as I know, which doesn’t account for the pre 1950s warming

Andy
Guest
Andy

Climate scientists are now postulating that another species existed before humans so as to explain the PETM

These people are barking mad

Andy
Guest
Andy

Dennis Horne at Hot Topic

You cannot reason with people who categorically refuse to understand the greenhouse effect any more than you can reason with paedophiles. If you want society to be safe you lock them away.

Charming

Mike Jowsey
Guest
Mike Jowsey

Yes Andy, Dennis the Menace was never charming. He’s just a twat. Often such twats make allegations which are projections. Just as the Democrats made allegations of Russian collision against the Trump campaign yet are now caught in a collusion mire themselves and Trump is free of any evidence against him after 2 years intense scrutiny. So maybe Dennis is the paedophile throwing stones in the glasshouse.

Maggy Wassilieff
Guest
Maggy Wassilieff

@Mike Jowsey,

I’m sure Dennis isn’t a paedophile; he’s just a recycler of climate alarmist abuse.
http://joannenova.com.au/2012/11/breaking-skeptics-are-like-paedophiles-drug-robyn-williams-abc-time-to-protest/

Andy
Guest
Andy

If not understanding a scientific theory is reason for imprisionment then the Gulags would soon be pretty full

Stephanie Hawking
Guest
Stephanie Hawking

Richard Treadgold
Oxford professor Myles Allen presents as good an explanation of global warming as you will find anywhere:
http://www.realclimate.org/index.php/archives/2018/04/the-alsup-aftermath/
You can ask questions.

Mack
Guest
Mack

It’s amazing just how perverse you are, Stephanie.
You may be addressing Richard, but unfortunately for you, Richard allows a certain degree of freedom of speech, and you’ve got to contend with me, also.
I’ve already explained everything to you, about the good professor Myles Allen of Oxford…about his huge “removal” of the upper atmosphere in his “explanation” of the “basic science” of the wacko “greenhouse effect”….but of course, nothing I’ve said would have remotely registered in your head, because it “went in?” one opaque ear and out the other transparent ear. It’s another strange phenomenon of the little “greenhouse” affliction, both you and Simon suffer from… also, it seems, Myles Allen, and all the rest of the AGW brainwashed academics at Oxford University…and any other University you may care to think of, Stephanie.
See, here’s my comment again, Stephanie,….
http://www.realclimate.org/index.php/archives/2018/04/the-alsup-aftermath/#comment-702822
And you can see that Myles Allen even comments directly above mine…he’s read what I’ve said about him…so why doesn’t he call me out?…..why does he just prefer to talk to a rabbit?

Stephanie Hawking
Guest
Stephanie Hawking

The American Association for the Advancement of Science (AAAS) is the world’s largest general scientific society and publisher of the journal Science…
https://www.aaas.org/sites/default/files/AAAS%20Statement%20on%20Release%20of%20National%20Climate%20Assessment%20Report.pdf
AAAS Statement on Release of National Climate Assessment Report, November 2017

“The overwhelming scientific evidence of our changing climate cannot be ignored. Scientists at federal agencies, national labs and academic institutions worked to summarize what we know about climate change in the United States and around the world. The Climate Science Special Report lays out the most recent scientific evidence of climate change, once again confirming that climate change is real, it’s happening now, and human activity is the primary cause. [continues]

Stephanie Hawking
Guest
Stephanie Hawking

Simple explanation here:
https://www.youtube.com/watch?v=Nc0QiP4D5IA
The Story of Climate Change (April 2017). Climate State. April 2017
Bill McKibben from http://350.org ,Jim Hansen, Katharine Hayhoe and others give us an update on the science and solutions to climate change.

Mack
Guest
Mack

Bill McKibben….fully blown nutter…..Richard has an item about him, right here at CCG , Stephanie…
https://www.climateconversation.org.nz/2013/06/wild-bill-mckibben-outlaws-of-physics/
I particularly like Richard saying “…..but his wild eyes cannot help but flash his burning lunacy”.
A bit of good reading for you there, too, Stephanie.

Mack
Guest
Mack

Jim Hansen……aaahahahhaha….well, Jim Hansen….this Jim Hansen giving his testimony to Congress in 1988, Stephanie?
comment image
Here’s what I’ve said about Jim Hansen….
https://localbodies-bsprout.blogspot.co.nz/2018/01/climate-change-just-got-personal.html?showComment=1516344914022#c2227445517051063591
But……just pretend I don’t exist and keep posting, Stephanie.

Simon
Guest
Simon

Mack,
Your opinions do not have a great deal of weight on the internet because (let’s be honest here) you are not an expert. Maybe you can accuse Bill McKibben of being a lobbyist but you can not say that about James Hansen. He is a foremost authority on the climate and is still publishing papers. I really hope that he is wrong and that 2°C global warming is not dangerous, because that is where we are heading.

Stephanie Hawking
Guest
Stephanie Hawking

American Physical Society, statement on Climate Change, November 2015
https://www.aps.org/policy/statements/15_3.cfm

Earth’s changing climate is a critical issue and poses the risk of significant environmental, social and economic disruptions around the globe. While natural sources of climate variability are significant, multiple lines of evidence indicate that human influences have had an increasingly dominant effect on global climate warming observed since the mid-twentieth century. Although the magnitudes of future effects are uncertain, human influences on the climate are growing. The potential consequences of climate change are great and the actions taken over the next few decades will determine human influences on the climate for centuries.

Mack
Guest
Mack

I didn’t accuse Bill McKibben of being a lobbyist, Simon…I accused him of being a fully blown nutter.
(Referring to James Hansen)…..”I really hope that he is wrong and that 2deg C global warming is not dangerous….” says Simon, with alarmist crap from Hansen rattling around in his subconscience.
About as dangerous as fast, low flying pigs, Simon.
Here’s a comment which will give you an overview, and insight wrt Hansen, Simon…..I mention him once..
http://www.drroyspencer.com/2013/05/time-for-the-slayers-to-put-up-or-shut-up/#comment-78670
btw, Simon, if you think that science presented on the internet does not carry “a great deal of weight”, you will be sadly disappointed.

Stephanie Hawking
Guest
Stephanie Hawking

National Academy of Sciences of the United States of America
http://nas-sites.org/americasclimatechoices/
Climate Change: Evidence and Causes

There are well-understood physical mechanisms by which changes in the amounts of greenhouse gases cause climate changes. [continues]

Further climate change is inevitable; if emissions of greenhouse gases continue unabated, future changes will substantially exceed those that have occurred so far. There remains a range of estimates of the magnitude and regional expression of future change, but increases in the extremes of climate that can adversely affect natural ecosystems and human activities and infrastructure are expected.

Ian Cooper
Guest
Ian Cooper

Steph, your comment above, “but increases in the extremes of climate that can adversely affect natural ecosystems and human activities and infrastructure are expected.” flies in the face of where the IPCC see trends in extreme weather. The IPCC rightly follow the lead of the scientists in those fields, e.g. those who study cyclones/hurricanes etc, who say that there is no trend either way regarding extreme weather events. Given the obvious increase in CO2 up until now, how can you make your claim that we are ‘expecting an increase in extreme weather events,’ and when is this likely to happen? Since the increase in CO2 hasn’t brought about an increase so far, how is this supposed to happen?

Stephanie Hawking
Guest
Stephanie Hawking

Coo, not my claim: National Academy of Sciences. Absence of (statistically valid) evidence is not proof of absence. Climate science advances every month.

For example, new evidence:
https://www.nature.com/articles/s41558-018-0140-y

IPCC will update this year. In the meantime here is a bit about the latest US Government report:
https://arstechnica.com/science/2017/11/us-government-climate-report-climate-change-is-real-and-our-fault/

Here is the report:
https://science2017.globalchange.gov/

Here is the update from the Royal Society:
https://royalsociety.org/~/media/policy/Publications/2017/27-11-2017-Climate-change-updates-report.pdf

Californians understand the science:
https://www.theguardian.com/environment/climate-consensus-97-per-cent/2018/may/14/california-battered-by-global-warmings-weather-whiplash-is-fighting-to-stop-it

When the IPCC releases its new report, you will accept it, “rightly follow[ing] the lead of the scientists in those fields…

Andy
Guest
Andy

From the Ars Technica article linked above

Many lines of evidence demonstrate that it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century. Over the last century, there are no convincing alternative explanations supported by the extent of the observational evidence

This is just parroting the IPCC line, which fails to give any explanation for the pre-1950s warming which was of similar magnitude to post-1950s warming

Ian Cooper
Guest
Ian Cooper

Steph, I’m not sure how the IPCC are going to come up with the conclusions that you are suggesting when the latest on tropical cyclones & hurricanes looks like the graphs to be found at the following sites?

http://policlimate.com/tropical/frequency_12months.png

http://www.bom.gov.au/cyclone/images/tc-graph-1969-2012.png

Is the IPCC going to revert to corrupting the science of those working in the field to maintain your delusion of extreme weather coming in an unknown future period?

Don’t hold your breath on this one Steph. Blue is not a good look!

Stephanie Hawking
Guest
Stephanie Hawking

@Coo. Neither of your graphs negate the expert statements I linked too; one is “alt-science” from the Cato Institute and the other is unlabelled. (Australia?) The evidence has been evaluated by experts and is as James Hansen predicted around 1988: severe weather events are now worse.

(3:07) Is the IPCC going to revert to corrupting the science …
(9:07) The IPCC rightly follow the lead of the scientists in those fields …

You seem confused. Let me help you. The IPCC reports synthesise the science at the time of writing and represent a consensus position. Like textbooks they cannot include the latest work in the field.

That’s why I pointed you at updated reports from scientific societies.

KillerBean
Guest
KillerBean

Steph, James Hansen predicted way back in 2008 that there would be no ice caps in 10 years (2018). Are the ice caps still there?

Stephanie Hawking
Guest
Stephanie Hawking

James Hansen predicted way back in 2008 that there would be no ice caps in 10 years (2018). Are the ice caps still there?

Hansen was not talking about Antarctica.

Arctic sea ice is being lost:
http://nsidc.org/arcticseaicenews/
http://fox2now.com/2018/02/26/nasa-releases-time-lapse-of-the-disappearing-arctic-polar-ice-cap/

Doing science is not like picking winning Lotto numbers, you don’t have to be perfect to be useful.

Mack
Guest
Mack

Ice capS….plural, there’s 2 of them, Stephanie. not that it makes any difference to the lying trougher, nutty fraudster, Hansen on his $180,000 salary.
“…..you don’t have to be perfect to be useful”. So you’re going to get yourself !/2 pregnant then, Stephanie?

Simon
Guest
Simon

James Hansen predicted way back in 2008 that there would be no ice caps in 10 years (2018)…
I’m calling BS on this one, reference please.

Mack
Guest
Mack

Yes, I think you’re right, Simon,… looks as if KillerBean got a little bit too loose with his tongue when saying iceCAPS….apologies, a bit to Stephanie as well.
The nearest thing I can come up with reference to what Killerbean said, is the 2nd sentence here…
https://principia-scientific.org/nasas-top-climate-scientist-discredited-in-failed-arctic-melt-prediction/
This does not preclude the fact that Hansen is chief bedwetter. He will have gone through quite a few mattresses in his lifetime… some say the whole syndrome could be the result of him snorting a lot of coal dust during the 1950’s.

KillerBean
Guest
KillerBean

Simon I’ll hold my hand up and say I wasn’t quite right, he was referring to just the arctic.

https://news.google.com/newspapers?nid=1988&dat=20080624&id=7mgiAAAAIBAJ&sjid=7qkFAAAAIBAJ&pg=5563,4123490&safe=strict&hl=en

Ian Cooper
Guest
Ian Cooper

Steph. The first graph is by Dr Ryan Maue (clearly shown at the top of the graph). Dr Maue is one of the leaders in his field, hurricanes, cyclones etc. The data posted isn’t going to change in the time frame that you are talking about so if the IPCC comes to the false conclusion that things are getting more extreme it will be because they are ignoring the historical data steering them in the face.

You can plainly see who produced the second graph when you read the url, bom.gov.au! I’m sure you must have heard of the BOM?

BobD
Guest
BobD

“Current datasets indicate no significant observed trends in global tropical cyclone frequency over the past century … No robust trends in annual numbers of tropical storms, hurricanes and major hurricanes counts have been identified over the past 100 years in the North Atlantic basin” “In summary, there continues to be a lack of evidence and thus low confidence regarding the sign of trend in the magnitude and/or frequency of floods on a global scale” “In summary, there is low confidence in observed trends in small-scale severe weather phenomena such as hail and thunderstorms because of historical data inhomogeneities and inadequacies in monitoring systems” “In summary, the current assessment concludes that there is not enough evidence at present to suggest more than low confidence in a global-scale observed trend in drought or dryness (lack of rainfall) since the middle of the 20th century due to lack of direct observations, geographical inconsistencies in the trends, and dependencies of inferred trends on the index choice. Based on updated studies, AR4 conclusions regarding global increasing trends in drought since the 1970s were probably overstated. However, it is likely that the frequency and intensity of drought has increased… Read more »

BobD
Guest
BobD

🙂

Stephanie Hawking
Guest
Stephanie Hawking

Cooper: “You can plainly see who produced the second graph when you read the url, bom.gov.au! I’m sure you must have heard of the BOM?”

The graph is Number V Season. Where? I suggested Australia but it was a guess. You of course don’t care as long as it chimes with your preconceived notions.

Stephanie Hawking
Guest
Stephanie Hawking

BobD. You refer to IPCC reports. The IPCC concludes global warming will cause disruptive climate change and we need to reduce emissions. But you don’t accept that. https://www.gfdl.noaa.gov/global-warming-and-hurricanes/ Geophysical Fluid Dynamics Laboratory 1. Summary Statement April 25 2018 Two frequently asked questions on global warming and hurricanes are the following: Have humans already caused a detectable increase in Atlantic hurricane activity or global tropical cyclone activity? What changes in hurricane activity are expected for the late 21st century, given the pronounced global warming scenarios from IPCC models? In this review, we address these questions in the context of published research findings. We will first present our main conclusions and then follow with some background discussion of the research that leads to these conclusions. “Detectable” change here will refer to a change that is large enough to be clearly distinguishable from the variability due to natural causes. Our main conclusions are: It is premature to conclude that human activities–and particularly greenhouse gas emissions that cause global warming–have already had a detectable impact on Atlantic hurricane or global tropical cyclone activity. That said, human activities may have already caused changes that are not yet detectable… Read more »

Andy
Guest
Andy

Perhaps I’m looking in the wrong places. I should be looking at wattsup and notricks … like you do

Bob quoted the IPCC.

Mack
Guest
Mack

“….present no evidence for dangerous man-made global warming.”
“….present no evidence for any man-made global warming.” Richard.

Mack
Guest
Mack

Yes, Richard, I think that’s about the only thing we disagree on….as you can see from all my comments, I’m a total “denier”….prefer “denialist”, it’s more professional…,not believing there’s any such thing as a “greenhouse gas” ,…..one of the Sky Dragon Slayers. This puts me at odds with Anthony Watts, Roy Spencer, Jo Nova and her husband, Judith Curry, Lord Monckton, you , Barry Brill etc etc….. in fact, probably all the contributors of that book, Climate Change The Facts 2017,…maybe even Jennifer Marohasy. That’s just the people “on my side of the fence”, Richard….I’m up against newspapers, books, radio, TV news, TV documentaries, magazines, scientific journals,… every single facet of the msm…..all the schools, colleges and universities,,…all the politicians…..the RS, every scientific and meteorological institute, the defence forces, financial institutions, medical institutions, beauracrats….even all the churches, the Pope, …everybody. It gives new meaning to being, “anti-establishment”. It’s a dangerous and lonely place, but I cannot just undo what I’ve learned from the Mexican biologist, Nasif Nahle, back in 2011. I cannot just become a “lukewarmer”, like yourself and the others on our side of the fence. That said, I wouldn’t like to… Read more »

Mack
Guest
Mack

Richard,
Just as a matter of interest, to see how deeply the establishment has been incalcated with “climate change”…..just look at the definition of “denier” in the OXFORD DICTIONARY!
https://en.oxforddictionaries.com/definition/denier
“…a prominent denier of global warming”
“…a climate change denier”.
That’s what you’re up against, a whole university full of AGW indoctrinated, ivory towered cloistered, highly intelligent, groupthink wackos, ……including Myles Allen, whose brain can’t think any further than the troposphere.
Young people actually aspire to go to Oxford to study this “climate change” crap.

Andy
Guest
Andy

We shouldn’t get too hung up on whether we disagree with greenhouse theory or not. The key issue is around whether climate change is an immediate and existential threat

Christchurch City Council seem to think so. They have re-ignited the coastal hazards issue by declining building consents on some coastal properties because of putative sea level rise projections. There are some heart-wrenching stories of people losing $200k investments in land because it no has no building allowed on it

Mack
Guest
Mack

Here’s peak stupid……
https://www.radionz.co.nz/national/programmes/insight/audio/2018645479/insight-farming-and-the-fight-against-climate-change
The 3rd picture will go down in history as a good laugh, by people in the future….amongst all the other hilarious memorabilia associated with the AGW delusion in NZ .
A caption could be the sheep thinking…”Shouldn’t you sheep be in here with us, fighting climate change ?”

Man of Thessaly
Guest
Man of Thessaly

Richard Treadgold on May 20, 2018 at 12:50 pm said:

“… the founding document of the IPCC strongly forbids policy recommendations. Since they constantly recommend policy, why should we trust them?”

Interesting claim, Richard. Are you referring to the paragraph 2 of “Principles Governing IPCC Work” (http://www.ipcc.ch/pdf/ipcc-principles/ipcc-principles.pdf)? It says:
“IPCC reports should be neutral with respect to policy, although they may need to deal objectively with scientific, technical and socio-economic factors relevant to the application of particular policies.”

Can you please provide some examples of the IPCC reports recommending policy, or not being “neutral with respect to policy”?

BobD
Guest
BobD

Mack,

And let’s not forget the amount of methane in the atmosphere: it makes up a whopping 0.00017% !

Simon
Guest
Simon

Methane is 25 times more efficient as a greenhouse gas than CO2. It contributes about 10% of the total greenhouse effect at current concentrations.
Future climate effects are dependent upon Representative Concentration Pathways (RCP). It’s impossible to separate policy from RCPs. For example, Andy complains that the Christchurch Council is assuming RCP8.5. RCP8.5 may be unlikely, but that is because the world is doing something about climate change. There are only two options; mitigation or adaption. Denial is never an option.

BobD
Guest
BobD

Simon,
>There are only two options; mitigation or adaption.

I vote for adaptation. When and if the remarkably sluggish sea level rate rises from its current particularly unalarming 1.7mm/year, we all shift inland a few more millimetres. Once a year, of course.

Mack
Guest
Mack

Simon,
“There are only two options; mitigation or adaption”.
mitigation …….seeing as our only contribution to climate change is a fart in a hurricane’s worth, Simon, I suggest you stop farting.
adaption……You are remarkably adapted already, Simon, ….eyes that can constantly withstand being buried in the sand.

Andy
Guest
Andy

On the subject of sea levels, TV1 News are running a piece tonight on the ChCh council’s response, so I’m told

BobD
Guest
BobD

>As Bob has it, the word is adaptation, certainly not adaption.

Why thank you, Richard. Your erudition is exemplary.

Mack
Guest
Mack

We’re playing Simon seez….so if Simon seez… “adaption”…..then adaption it is.

Simon
Guest
Simon

Adaption and adaptation are both valid and have the same meaning. Adaptation is more common. No need to throw in an extra syllable if you don’t need it.

Andy
Guest
Andy

If we can adapt to “Stand by me” at a Royal Wedding then either adaption or adaptation is OK with me

Mack
Guest
Mack

There is a bit of a sort of phenomenon whereby a person can make a mistake in spelling or grammar and because the following commenters refer back to the previous comment….the mistake is perpetuated.
This really came home to me when I misspelled a bloke’s name as Pekka Pirala…instead of Pekka Pirilla. ..all the following comments did likewise..
https://blog.hotwhopper.com/2014/08/sack-australias-biggest-laughing-stock.html?showComment=1408182051991#c8686407071562919858
Good reading for you there, Simon, on this cold, wet, evening.

Mack
Guest
Mack

There is a bit of a sort of phenomenon whereby a person can make a mistake in spelling or grammar and because the following commenters refer back to the previous comment….the mistake is perpetuated.
This really came home to me when I misspelled a bloke’s name as Pekka Pirala…instead of Pekka Pirilla. ..all the following comments did likewise..
https://blog.hotwhopper.com/2014/08/sack-australias-biggest-laughing-stock.html?showComment=1408182051991#c8686407071562919858
Good reading for you there, Simon, on this cold, wet, evening.

Mack
Guest
Mack

Hell, I’ve even done it again ! That’s Pekka Pirila…
https://scienceofdoom.com/2014/08/07/a-challenge-for-bryan/#comment-70086

Man of Thessaly
Guest
Man of Thessaly

Richard,

I’d be grateful if you can provide a link to the IPCC “founding document” you mention. The forbiddance you refer to above doesn’t seem to be in the founding decisions from UNEP (http://www.ipcc.ch/docs/UNEP_GC-14_decision_IPCC_1987.pdf), WMO (http://www.ipcc.ch/docs/WMO_resolution4_on_IPCC_1988.pdf) or UN General Assembly (http://www.ipcc.ch/docs/UNGA43-53.pdf). The IPCC itself doesn’t mention a “founding document” on its website.

That aside, you didn’t provide any examples of the IPCC recommending policy. Professors Renwick and Frame may well have contributed to IPCC reports, but they are not the IPCC. They’re employed at VUW, and are entitled to recommend policy if they want. Hoesung Lee didn’t make any policy recommendations in the excerpt you quoted. He, as IPCC Chair, could speak on behalf of the panel, but when you say “the IPCC recommends policy”, I’m expecting an example from official communication like a report or media release.

So, if you don’t mind, please provide some examples of the IPCC reports recommending policy, or not being “neutral with respect to policy”.

Simon
Guest
Simon

A paper just published in Nature shows that mitigation is cheaper than adaptation:
https://www.nature.com/articles/s41586-018-0071-9

BobD
Guest
BobD

Simon,

Based on current trends (SLR, warming rate, extreme events) there is no doubt that the IPCC projections are too extreme, a fact acknowledged by them in various ways at various times.

Therefore any predictions of damage from climate change are equally too extreme.

Therefore any assessment of mitigation versus adaptation will be incorrect, if it is based on IPCC projections.

In the light of uncertainties, since we have little confidence in the threat itself, and the risk level of the unknown threat, adaptation is the ONLY option.

This is obvious to all rational thinkers.

Only those with vested (financial) interests in proposed mitigation “solutions” (wind-farms, solar systems, government subsidies, research grants, etc.) will be pushing for mitigation where it makes no sense.

Andy
Guest
Andy

I read two items in yesterday’s NZ news: petrol could reach $3 a litre, and people are going cold because they can’t afford to heat their homes

Isn’t this what “climate change mitigation” looks like?

BobD
Guest
BobD

Andy,

It would probably have more effect if the whole of NZ produced more than a mere 0.12% of the world’s man-made CO2.

Simon
Guest
Simon

BobD,
IPCC reports are merely summaries of the research available at the time.
Sea level rise has shown some recent evidence of acceleration, so if anything AR4 & AR5 estimates are too conservative.
Temperatures are right in the middle of the CMIP5 ensemble envelope, no over-estimate there.
Rainfall intensity has increased. Number of events has not but there is evidence that cyclones/hurricanes are on average bigger and slower moving.
A quick scan on Google Scholar showed zero papers showing evidence of bias in AR5 estimates.
Your claim that IPCC projections are ‘too extreme’ is incorrect. I have no idea where you get your information from.

Bob
Guest
Bob

Simon, see above. https://www.climateconversation.org.nz/2018/04/climate-of-conversation/comment-page-1/#comment-1550960 “Current datasets indicate no significant observed trends in global tropical cyclone frequency over the past century … No robust trends in annual numbers of tropical storms, hurricanes and major hurricanes counts have been identified over the past 100 years in the North Atlantic basin” “In summary, there continues to be a lack of evidence and thus low confidence regarding the sign of trend in the magnitude and/or frequency of floods on a global scale” “In summary, there is low confidence in observed trends in small-scale severe weather phenomena such as hail and thunderstorms because of historical data inhomogeneities and inadequacies in monitoring systems” “In summary, the current assessment concludes that there is not enough evidence at present to suggest more than low confidence in a global-scale observed trend in drought or dryness (lack of rainfall) since the middle of the 20th century due to lack of direct observations, geographical inconsistencies in the trends, and dependencies of inferred trends on the index choice. Based on updated studies, AR4 conclusions regarding global increasing trends in drought since the 1970s were probably overstated. However, it is likely that the frequency and intensity… Read more »

Simon
Guest
Simon

Why are you quoting from AR5 if the IPCC projections are ‘too extreme’? My comments on rainfall intensity and hurricane size are from recent papers that post-date AR5.

Maggy Wassilieff
Guest
Maggy Wassilieff

@Simon
My comments on rainfall intensity and hurricane size are from recent papers that post-date AR5.
References please.
Will be interesting to see how the rainfall intensities compare with these historical records
http://www.bom.gov.au/water/designRainfalls/rainfallEvents/worldRecRainfall.shtml

Will also be interesting to see how rainfall datasets are treated in your papers.
There are massive problems with how rainfall is measured at a regional scale (and who monitors rainfall in our oceans)

Simon
Guest
Simon

US precipitation changes: https://www.epa.gov/climate-indicators/climate-change-indicators-heavy-precipitation I’m sure I also saw a global analysisbut can’t find it.
Hurricane changes: https://www.sciencedaily.com/releases/2018/05/180521131532.htm
Also attribution of Hurricane Harvey: https://www.sciencedaily.com/releases/2018/05/180510133045.htm

BobD
Guest
BobD

Simon,

You’re a hoot. I present data from AR5 that shows the IPCC itself can’t discern any trend at all in most extreme weather indicators, then you laugh that off since you have “recent papers that post-date AR5”.
AR5 came out in 2014.

The rainfall data you are presenting ends in 2015! A whole year!
But it doesn’t show what you think it shows. Click over to the global chart and notice what the annual anomaly for the last year (2015) looks like.comment image
If that’s the big change since 2014, colour me unimpressed.

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