It would be nearly impossible to fabricate a better fictional demonstration of motivated reasoning than the May 2025 Nature commentary titled “Hurricane risk in a changing climate — the role of uncertainty” by Adam Sobel and Kerry Emanuel. In fact, if one needed a primary source to study how scientific ambiguity can be massaged into policy certainty, this article would serve beautifully.
The authors begin by acknowledging the obvious:
“there’s also a lot that we don’t know”
about how climate change affects hurricanes. This initial concession gives the impression of intellectual humility. Yet what follows is a masterclass in rhetorical misdirection—a piece that deserves to be taught in schools, not for its science, but for its persuasive structure.
Rather than treating uncertainty as a reason for caution, Sobel and Emanuel treat it as a trigger for urgency. They write,
“In general, uncertainty increases risk”.
This sounds profound until you realize it’s a tautology masquerading as logic. More uncertainty does not inherently increase actual risk—it increases the range of possible outcomes. But in the world of policy-driven science, this range is always framed around the worst case.
This is how one turns “known unknowns” into leverage for sweeping intervention.
The authors proceed to break down various hurricane risk factors
“in roughly decreasing order of confidence,”
a rhetorical trick designed to create a gradient of believability. It starts strong—with precipitation—then deteriorates into hedging and handwaving, without ever breaking the narrative thread.
On rainfall, they write:
“Scientists are confident that rainfall associated with hurricanes will increase in a warmer climate”
because
“more water vapour can be held in a warmer atmosphere”.
This is true in theory. But the authors make no effort to quantify it, nor do they explain how this theoretical increase translates into measurable damages—particularly when modern infrastructure, forecasting, and drainage systems have vastly improved.
On coastal flooding, the authors rely heavily on sea-level rise, noting that “
global sea level has risen by around 20 centimetres since pre-industrial times”
and that flooding
“would have been less”
a century earlier during events like Hurricane Sandy. But they gloss over local variability, subsidence, and historical storms of equal or greater magnitude. Context is everything—and here, it’s notably absent.
Theoretical Constructs and the Mirage of Consensus
One of the more revealing passages deals with wind speeds. The authors admit that
“the wind-intensity increase is harder to observe than sea-level rise,”
yet assert,
“multiple lines of evidence support an increase in wind speeds as an important factor contributing to increased risk”.
That’s not science; that’s theology. Evidence that can’t be reliably observed shouldn’t be used to underwrite regulatory or economic policy.
On storm frequency, they are more candid:
“Researchers do not yet fully understand what controls the global frequency of hurricanes, and models produce conflicting predictions”.
But instead of urging restraint, they dive deeper into the weeds of uncertainty, hoping the complexity will obscure the weakness of the claim.
The Atlantic hurricane uptick? Not due to greenhouse gases, they say—it’s likely
“more a response to decreasing air pollution than to increasing greenhouse gases”.
This claim directly contradicts the mainstream narrative that CO2 is the prime villain. And yet, they deploy it only to claim that the hurricane surge is real—even if the carbon culprit isn’t.
A Moving Goalpost, Expertly Camouflaged
Their discussion of aerosol impacts is perhaps the article’s most candid moment.
“In the mid-twentieth century, aerosols… had a cooling effect by reflecting solar radiation away from Earth,”
they explain.
“This effect has reduced as clean-air policies have taken hold. Simply put, more solar radiation means warmer seas”.
Fair enough—but what follows is the quiet pivot:
“If that explanation is true, it implies that the recent increase in Atlantic hurricane intensity is unlikely to continue,”
yet also “
that the dearth of Atlantic hurricane activity in the 1970s and 1980s is unlikely to be repeated”.
In short: whatever happens, the authors’ thesis remains valid. Heads they win, tails you still lose.
This is textbook motivated reasoning. The causal arrow is bent and twisted until it points wherever the authors need it to—toward more funding, more intervention, more regulation.
Models, Models Everywhere—And Not a Truth to Hold
Finally, they return to models.
“Earth-system models project that greenhouse gases will tend to further increase equatorial eastern Pacific sea temperatures… This is consistent with the expectation of low Atlantic hurricane activity in coming decades,”
they write—only to immediately undercut it:
“But observations have instead demonstrated the opposite”.
So let’s tally that up: the models say one thing, reality says another, and the authors still walk away claiming credibility. In any other field, this would trigger a re-evaluation of assumptions. In climate science, it’s just another paragraph.
Conclusion: The Climate Policy Ouroboros
The final message of the piece is a kind of circular logic loop: uncertainty justifies concern, concern justifies policy, and policy then retroactively validates the concern.
“Our overall opinion is that present US hurricane hazard is greater than the longer-term historical average,”
the authors write, due to
“well-understood factors that increase hazard and poorly understood ones that might increase it”.
Translation: we don’t know what we don’t know, but let’s act as if we do.
This is not empirical science. This is moral theater, staged with peer-reviewed props. It takes a complicated, poorly understood, regionally inconsistent phenomenon like hurricane frequency and repackages it as a policy cudgel.
And therein lies the real danger. Not from the storms—but from the political winds that follow them.
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There are known knowns.
These are things we know that we know.
There are known unknowns.
That is to say, there are things that we know we don’t know.
But there are also unknown unknowns.
There are things we don’t know we don’t know.
Donald Rumsfeld
I think there are also unknown knowns – things we really know, but don’t admit to, like most science is bunk these days. Never mind the history.
Unknown knowns – things that are known by other people.
There are false knowns. Things we know that are in fact false.
And because of this, we should blindly accept everything asserted as “Scientists Say….”
This is Demonology, not science. The Satanic Gasses are Evil, and everything
must be interpreted in that light.
Totally agree. They’ve created a religious movement.
Didn’t Salman Rushdie receive a fatwa for writing The Satanic Gasses?
Oh, that was Verses?
“Never mind.” — in best Emily Litella voice
OBEY.
They Live!
Science doesn’t matter as long as there is plausible reason to continue the war of terror on the populace. All the article needs is the headline, the photo of blowing palm trees, and the first paragraph of the article decrying all the money hurricanes cost. In the unlikely event that the average reader goes deeper into the article, the rest is techno-babble, and if the average reader accepts the premise of the article, “We’re all going to die!”, then they’re going to accept the article as evidence we’re all doomed. Still, it’s good that Charles Rotter and others here keep calling out the fear-mongers.
Charles Rotter continues with some tasks that are quite important and relevant but are often boring topics. This takes grit as well as knowledge and experience. If I was in his shoes, I would appreciate a compliment now and then, so here is one from me.
BTW, how do you find the time to suss out, analyse and write your frequent, quality articles, Charles?
Geoff S
Mr. Geoff: I join in respecting Mr. Rotter’s work, and it’s no slight to his writing to note that, sometimes, CliSci makes it easy and it writes itself. Here is an excellent example, exposing the rhetoric of CliSci and using their own words against them.
Of course they don’t know, but why pass up the opportunity to spread alarmism when it could result in more research grants and for governments the opportunity to introduce carbon taxes to pick citizens’ pockets for more revenue that can be used to prop up pet projects. Nor will the green product peddlers admit they don’t know either; otherwise, they would undermine their efforts to sell supposedly environment-saving devices that are not only subsidized by governments but also overpriced into the bargain. The reality is that for the doomsday crowd to admit they don’t really know if climate change is actually occurring and what’s causing it would be actions little more than to derail the gravy train and upset the apple cart along with it.
And some people will believe every word and quote the article as ‘proof’.
Do you get Dessler’s newsletter as well?
Had to look him up, never heard of him. Are we dueling sarcasms?
Charles, surely you are not questioning the authority of Dessler? Here is what he wrote about the textbook he wrote –
Invaluable! Policy of climate change!
He even got an award for it –
Next thing you’ll be trying to convince me that climate is the statistics of weather observations, and that people like Dessler are delusional!
/sarc off
You mean Angry Andy the crazy Aggie?
“””because
>> “more water vapour can be held in a warmer atmosphere”.
This is true in theory.”””
Aww, you and that two authors might look at the trend of the global cloud cover and try this again..
There are too many people trying to explain complicated things with simple three word sentences and simple solutions..
Reality rarely behaves that way.
Scientists are confident that rainfall associated with hurricanes will increase in a warmer climate” because “more water vapour can be held in a warmer atmosphere”.
Wouldn’t a warmer atmosphere result in decreased rainfall, because it can hold more water?
>> Scientists are confident that rainfall associated with hurricanes
Huh.. you might want to look that up too, I recently scanned the relevant chapter from the latest IPCC report too see if C Wright was correct (he was not, but he made statements of certainty “IPCC6 says that.. ” instead of the uncertainty ones “IPCC6 does not say..” this small correction makes a huge difference which is very related to this article!)
Either way, I don’t want to read it again, here it is, you can find that the climate scientists make different statements between tropical storms, hurricanes and major hurricanes.. some of them regards rainfall trends.. I cant help but wondering even if such a trend is found, what does is really mean for the global warming hypothesis?
https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter11.pdf
These are “Wright-related” statement sin chapter 11 about hurricanes:
11.7.1 Tropical Cyclones
p.1585ff
– Kossin et al. (2020) extended the homogenized TC intensity record to the period
1979–2017 and identified significant global increases in major TC exceedance probability of about 6% per decade. [no specific statement about measured hurricane intensity is made]
– There is low confidence in most reported long-term (multi-decadal to centennial)
trends in TC frequency- or intensity-based metrics due to changes in
the technology used to collect the best-track data.
– A subset of the best-track data corresponding to hurricanes that have
directly impacted the USA since 1900 is considered to be reliable, and
shows no trend in the frequency of USA landfall events
Isnt that what Koonin’s book already highlighted?
More rainfall is associated more with Storm size and forward speed than the small amount of temp rise of the past century. A large slow or stationary tropical storm can dump much more rain on a specific area than a cat 5 fast moving hurricane. What controls size and speed of storms, one counters the other.
So much to explain with so little knowledge.
Although more water vapour COULD be held in a warmer atmosphere, that does not mean that more water vapour IS held in a warmer atmosphere.
Nature has confronted science with this quite difficult problem with many variables. Geoff S
Dang! The Lut desert and Death Valley are very, very, hot – but very, very, dry.
I’m sure “climate scientists” will promptly invent a “negative GHE” to explain this observation.
And that hypothetical increase in absolute humidity is the crucial “feedback”. How is this measured?
If it’s not a “feedback” it just may well be a “forcing”, whatever that is.
More uncertainty.
It could be a “forcing feedback” or a “feedback forcing” – or some other pseudoscientific bafflegab.
Very impressive to people even more ignorant and gullible than the self proclaimed “climate scientists” uttering such nonsense. This category probably includes most politicians and “journalists”.
Transfer funding to astrologers – they come up with much nicer sounding jargon than “feedback” and “forcing”. Here’s one –
Now that’s impressive!
I’m hearing your last sentence in my inner Jim Carrey voice…
“Nature has confronted science with this quite difficult problem with many variables. Geoff S”
This is why climate science should be using enthalpy as the metric for the climate rather than temperature. The relationship between temperature and humidity will determine whether enthalpy goes up, down, or sideways. But you first must track enthalpy in order to have a clue as to what is happening.
The earth, atmosphere, seas, lands are energy transfer systems.
The sun, orbit, precession, and other planetary influences are cyclical.
Yes. Enthalpy.
That statement implies the “warmer atmosphere” is always at saturation for the temperature. Have they heard of relative humidity?
“Reality rarely behaves that way.”
Agreed!
This tells us a lot about Nature – and nothing about climate.
More rainfall because …….
Yes, that’s why the highest flood marker in the Rhine valley is dated 1342.
We might look to the precautionary principle for guidance, except that the precautionary principle implies that we should ignore the precautionary principle.
Well, the precautionary principle is actually often used to promote more and faster ‘climate’ policies because: it might be WORSE!!!!
But right next door in the adjacent room there is a sign saying: ‘The law of unintended consequences’ to which i write in pencil below:’ or INTENDED consequences.
Very nice Charles. I don’t expect the CAGW jokers to write or say much of anything truthful until they have been thoroughly beaten. Honestly speaking the truth to them does nothing. These people are supposed to be highly educated, it doesn’t say much for our education system to turn out cult followers like these.
I am surprised Kerry Emanuel didn’t try to link this article to why there needs to be a “category 6” for hurricanes.
Really? Climate is the statistics of weather observations, and changes nothing.
“Climate scientists” are obviously ignorant and foolish – unless they are aware they are spouting nonsense, in which case they are simply frauds.
There are, to date, no identified universities or colleges offering any degrees in “Climate Scinece.”
There are no climate scientists.
Surprised the “Scientists say…” was not followed by “… most vulnerable.”
“Earth-system models project that greenhouse gases will tend to further increase equatorial eastern Pacific sea temperatures… This is consistent with the expectation of low Atlantic hurricane activity in coming decades,”
Model projections are consistent with expectations, ummmkay. the scientific principal of “I wouldn’t have seen it unless I believed it.”
No they won’t. According to Gavin Schmidt (mathematician and self proclaimed “climate scientist”), CO2 is “well mixed” in the atmosphere. Current terrestrial surface temperatures vary between about 90 C and -90 C.
Surface temperatures are not correlated at all to CO2, are they? Nor to H2O, either. Both the hottest and coldest places are characterised by low levels of atmospheric H2O.
Some people will believe anything.
The models say so.
And belief in the models as creator of facts is implicit in the Climate Religion.
“So say we all.” (Bonus to those who recognize the reference.)
In your opinion, the sun has the same impact on temperatures, from the equator to the poles?
Why are you asking for my opinion? Don’t you know?
Might have something to do with the lack of vegetation on the surface and the heat response, no? And the difference in heat retention between cities and deserts.
And the latitude
Or bananas? Your comment is completely uninformative.
No offence intended.
Or it might not, is that what you’re saying?
Why does this comment have a scrolling format?
If you send me $100, I will read it. Otherwise, it is a skip.
He probably used the “pre” format function. (That is, the less than sign pre greater than sign)
I used to be able to use it to put up a table from an Excel spreadsheet. It displayed correctly but with a scroll bar to move to the columns that were off the screen.
When I’ve tried to do now, it sticks all the rows and columns on just one row with a scroll bar.
Well, I certainly don’t. All the heat of the day vanishes during the night – gone to space, not the poles.
As a matter of fact, the hottest places on Earth simply cool down at night – no sunlight, you see. And heat up the following day.
Weather changes – a 12 year old can predict the formation and track of revolving tropical storms as well anybody, given access to the same data. Even aided by supercomputers, education, and experience, you’ll notice that forecasters tend to update their forecasts hourly – or even more frequently.
Not disparaging them – they are doing the best they can.
Still seeking an explanation of what sets the temperature each night at any given place. If indeed Tmin is on a tiny increase at many places over the decades, what is preventing it from each night being the same as the night before?
Activists claim that atmospheric CO2 is the culprit. But the night time Tmin varies greatly from place to place and night to night, while CO2 stays pretty much the same over a season. So, another factor is at play, not just CO2. What is that candidate factor?
Tip: Please include changes in thermometers/shelters in your candidates. Geoff S
Geoff, as far as I know, Tyndall pointed out that CO2 and H2O just slow the rate at which energy is gained by or lost from the surface.
Fourier pointed out that all the heat from the Sun is lost from the surface.
Taken together, more CO2 and H2O result in slower heating, and slower cooling – reducing diurnal variations.
If Tmin shows increase, but Tmax doesn’t, man-made heat is the factor. Unless anybody else has another reason, which doesn’t involve the fact that thermometers respond to heat. My hypothesis is disprovable, all someone has to do is demonstrate that thermometers don’t respond to heat.
Or maybe that man-made heat doesn’t affect thermometers?
I’m always happy to learn something new.
This is just off the top of my head so it needs more thought.
Temperature in a vacuum should relate like
T = (T0) e^-at where a is the rate of decay and T0 is the starting temperature (at sunset??)
So with and without CO2 you would have
T_no-co2 = (T0) e^-at
T_co2 = (T0) e^-bt
Integrating that over time to get the area under the temperature curve as a metric for heat loss you get
Q_no-co2 = (-1/a)T0 e^-at
Q_co2 = (-1/b)T0 e^-bt
If CO2 retards the rate of decay then a > b and (1/a) < (1/b)
If 1/a is less then 1/b then Q_no-co2 will be smaller than Q_co2
Since the rate of decay is greater without CO2 the final temperature at the endpoint may be lower than with CO2 but the total heat loss with CO2 would seem to be greater.
The rate of decay has a T^x in it somewhere because of S-B law but I need to think about how to use it – so I just made it part of “a” and “b”.
Kind of counter-intuitive so I need to work on it some more.
Area under the curve will give you heat in the system, not heat lost. Delta Q between t0 and tend would give you heat loss. If decay rate is quicker for no CO2, then there will be less heat remaining in the system and Q No CO2 should be smaller.
That’s not quite the way radiative heat loss works, at least as I understand it. Radiative intensity is based on temperature. The higher the temperature the higher the intensity. The higher the radiative intensity the greater the amount of heat that is radiated away for dt.
For a time ΔT if in case 1 the beginning and end temperatures are 300K and 200K and in case 2 the beginning and end temperatures are 300K and 150K what is the radiative heat loss for the two cases?
(i.e. the decay rate for case 2 is greater than for case 1)
I think you have your cases reversed? Should be Lower ending temp for Case 1, No-CO2?
Also, do you mean radiative power (Q dot?)? Q is always just energy, Q dot is an intensity (power). You could have an Area intensity too but there is no Area term in your equation (also it would drop out anyway because area doesn’t change, leaving either total change in energy or change in power over time).
Integrating temperature over time by itself doesn’t mean much. Temperature needs some kind of material property to convert it to an energy term. I took “(-1/a)e^-at” to be Intensity (time based), where “a” included some kind of material property regarding energy capacity. That would make the your equation give a Q (Energy).
Integrating power over time will produce energy, Q.
However, if you look at your equation as a purely mathematical way to express the decay of power, Q dot, over time, then it would still make sense because at time Tend, the temperature would be lower and the radiative power(Q dot) would be lower for the “no co2” scenario.
Yep. Got’em reversed.
There is no area in my equation because I assumed the same area for both cases. The area of the earth is pretty much constant whether there is CO2 in the atmosphere or not. That constant should cancel when comparing the two cases.
“Integrating temperature over time by itself doesn’t mean much. Temperature needs some kind of material property to convert it to an energy term”
a watt is a joule/sec. multiply by time and you get joules. W/m^2 is pretty much joules/sec if the area = 1. So you would get the number of joules emitted during the interval “t”.
“I took “(-1/a)e^-at” to be Intensity (time based), where “a” included some kind of material property regarding energy capacity.”
“a” is just the time constant for the decay of the exponential temperature curve.
I didn’t mean this to be an exhaustive mathematical model. I was just trying to show that radiative heat loss is a little more complicated than just saying CO2 slows heat loss resulting in an inexorable heat gain leading to higher temperatures. CO2 may slow temperature decay but the relationship to heat loss isn’t that simple. I made lots of assumptions and ignored a lot of things.
This kind of goes with the climate science claim that the earth is gaining heat because the “top of the atmosphere” is going up due to more CO2 so the CO2 is radiating less because of a lower temperature. Well the “more CO2” means more CO2 radiating which somehow gets lost. What’s the relationship between less CO2 radiating at a higher intensity versus more CO2 radiating at a lower intensity? I’ve never seem climate science address that, they just go with the CO2 radiating at a lower intensity part of the equation.
I always cringe when I see “top of atmosphere”. To use TOA properly, it’s just a control volume boundary that you would use as a point to calculate total flux, not an actual radiative surface. I would rather hear discussion about how CO2 changes absorbtion coefficients and optical depth.
My tinfoil hat conclusion is that if they tried that they would have to address how much those vary due to other factors (clouds, particulates, pressure, general seasonal mixing, etc).
+100.
I think you will find that the dew point has a large effect on minimum temperature at night. As the atmosphere cools, water vapor precipitates releasing energy that warms the atmosphere. It is why deserts just keep on cooling while moist environments level off at a higher temperature.
“All the heat of the day vanishes during the night”
temperatures go to absolute zero at night????
The fact that wind and ocean currents move vast quantities of heat from the equator to the poles has been known for centuries, and the magnitude of this transport has been measured for decades.
Do they really? Are you mad?
Just like the fact that the Moon was propelled in a circular orbit around the Earth by celestial beings, or the fact that Sun was in a fiery chariot driven by a Sun-god?
The Earth has cooled over past four and a half billion years, and the South Pole is covered by some km of ice. Not much heat from the Equator there. The ice is gently heated from below.
The main ‘heat’ transfer from the equator to the poles happens through oceanic currents and wind..where it creates a lot of well..weather in the mid latitudes..
Complete nonsense. At night, all the heat of the day is lost. You seem silly enough to believe that means night time temperature should drop to absolute zero, so I suppose you are silly enough to believe that “heat” travels from the equator to the poles!
Sorry, but that’s the sort of thing that ignorant and gullible people who think that adding CO2 to air makes it hotter, think.
‘”there’s also a lot that we don’t know” about how climate changes.’
And that pretty much covers it.
Except that does not stop them from declaring a climate apocalypse.
There’s something we can say for certain. Humans have never been, are not, and will never be in control of the Earth’s climate.
There is no empirical evidence in support of humans being able to measurably affect the Earth’s climate, and much empirical evidence that contradicts any potential for humans to measurably affect the Earth’s climate.
To paraphrase a quote by Will Rogers:
“It ain’t what they don’t know that’s the problem. It’s what they know that ain’t so.”
Attributed to Mark Twain but unconfirmed.
OH NO!
We’re uncertain who said it! 😎
Dr. Sobel of Columbia U, an expert in atmospheric sciences, was lead author on ‘Tropical Cyclone Frequency’ in 2021. There, he suggested that a warming climate would reduce the frequency of tropical storms. That is a plausible, but uncertain scenario even with complex climate models, but certainly uncertain. Similarly, the recent election has made uncertain the frequency of funding of certain modeling computations at least for the coming four years, possibly longer. It is uncertain.
I have no certain insight into Dr. Sobel’s or Dr. Emmanuel’s motivations in their Nature Commentary, but uncertainty appears to play a major role.
That IS certain.
All engines perform greater work with the potential energy difference is greater.
If the oceans are warming and the atmosphere less so, there is a lower potential difference and the thermal engine produces less work.
Since the oceans store vastly more energy than the atmosphere, should the oceans warm a tad, the tropical cyclones will decrease.
I’m noticing that climate change is causing climate change more and more often these days
Well yes, as long as the outcome is: more stringent climate (anti AGW) policies. Therefor what you really need is the trobe: the uncertainty means it could be much worse and we should really ramp up the policies even faster. It happens on multiple platforms: on Climate and on Ukraine.( i am consciously leaving out the Israel/ middle east situation as the lines seem much more blurred).
What’s amazing is that Emanuel has managed to get 20 years of traction out of this. He was basically saying the same thing 20 years ago.
Nature blows.
It seems to me that the Accumulated Cyclonic Energy index settles the issue of climate change and hurricane strength and number. Answer: There has been no change in strength or number of hurricanes and cyclones in many decades.
When they say, “multiple lines of evidence”, what they mean is that more than one model has made this prediction.
What is the rate of change is the earth’s humidity and where is is changing? If hurricane intensity increases with temperature due to atmospheric water content then it must be proved that humidity is increasing in hurricanes. Is it? Anybody know if and how hurricane humidity is measured?
To be more specific, what is the rate of change in water and vapor content per meter of air in a hurricane?