Climate data shows no recent warming in Antarctica, instead a slight cooling

Below is a plot from a resource we have not used before on WUWT, “RIMFROST“. It depicts the average temperatures for all weather stations in Antarctica. Note that there is some recent cooling in contrast to a steady warming since about 1959.

Data and plot provided by 

Contrast that with claims by Michael Mann, Eric Steig, and others who used statistical tricks to make Antarctica warm up. Fortunately, it wasn’t just falsified by climate skeptics, but rebutted in peer review too.

Data provided by 

H/T to Kjell Arne Høyvik‏  on Twitter


No warming has occurred on the South Pole from 1978 to 2019 according to satellite data (UAH V6). The linear trend is flat!

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May 10, 2019 11:24 am

Currently, there is a significant anti-intellectualism of the formerly respected environmental and major media. Their credibility is shot and their politics is showing.

“I am skeptical about everyone in the whole wide world (including myself) and everything in that world, without 3 forms of trusted, independent verification.”

Anonymous Heins

Reply to  Stephen Heins
May 11, 2019 8:30 am

Wonderful summation comment anonymous Stephen!
Plus 100+

NZ Willy
May 10, 2019 12:10 pm

Kindly specify if the verticle axis of the plot is in degrees Fahrenheit or Celsius.

Reply to  NZ Willy
May 10, 2019 7:32 pm

UAH is in deg C. The other one, being Norwegian, will also be in deg. C though it is sloppy not to mark the axes on any graph ( unless you are a sociologist ).

However, the RIMFROST dataset is appropriately named since almost all of its stations are near the coastal rim of the continent, as we can tell by the fact that the mean in “only ” -18 deg. C. Also a disproportionate number are on the Antarctic peninsula which, as Jim Steele pointed out a couple of years ago, is heated by Foehm wind effects: basically being heated by surrounding sea temperatures and not at all relevant to the rest of the continent.

There is also no discussion of the changing number and distribution of stations between the beginning and end of the record. Just looking at the variability, I suspect there were far fewer stations around 1960.

This d18O proxy form Gomez Dome at the base of the peninsula.

comment image
Liz Thomson et al 2009
Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula
GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L20704, doi:10.1029/2009GL040104,

This RIMFROST dataset is NOT necessarily representative of the continent of Antarctica. The interior is much colder and IIRC shows cooling.

May 10, 2019 12:10 pm

That Nature cover was nothing more than a cartoon.

May 10, 2019 12:17 pm

What does this mean for the so called “arctic amplification” , where the poles are supposed to be warming more rapidly than the rest of the earth?

Or is there some magic that that happens only at the north pole?

Richard M
Reply to  a_scientist
May 10, 2019 4:25 pm

Polar amplification (a better term) is somewhat valid but does not apply in the current situation. The Arctic warming is likely driven by the NAO/AMO and hence is not an example of polar amplification. When the AMO turns negative I fully expect to see the Arctic cool back down.

Polar amplification is where the the entire planet is warming and since heat is generally transported to the poles, which are smaller in area, they show a larger degree of warming. The fact Antarctica is not warming is indeed evidence contrary to AGW.

Joseph Murphy
Reply to  Richard M
May 12, 2019 9:51 am

Heat is generally transported to the poles by water, at least in large quantity. The artic works very well in this regard. Antartica is the perfect geologic arrangement to give little care to what the rest of the planet is doing; a large landmass centered on the pole surrounded by ocean. If one wanted to find polar amplification they should be able to see it loud and clear in the north long before they could find a trace of it in the south.

Reply to  a_scientist
May 10, 2019 5:00 pm

The top of the water is warmer than the bottom so it is logical that the Arctic is warmer than the Antarctic.

Rob Leviston
Reply to  RickWill
May 10, 2019 6:26 pm

Needed a sarc tag Rick!

Reply to  a_scientist
May 10, 2019 8:14 pm

The magic is that pretty much nobody is able to go to the poles to verify the claims.

J Mac
May 10, 2019 12:23 pm

No warming trend in Antarctica?

Bart Tali
May 10, 2019 12:24 pm

For reference, this is HADCRUT4 70-90S:comment image

May 10, 2019 12:26 pm

Wow, lots of information crammed into that site. Interesting how much the temperature fluctuates over short periods of time in the Antarctic.

Reply to  markl
May 10, 2019 2:30 pm

Suspiciously noisy ground based data…and not consistent with the satellite data (which is also noisy with frequent 2 to 3 degree changes in less than 24 months).

I suspect that the instability may be due to the very low amounts of liquid water (over most of the continent) as a moderating/limiting factor in the hydrological cycle.

M Courtney
May 10, 2019 12:33 pm

Satellite data isn’t the best way to look at the poles. Because of geometry.

But weather stations on the ground are certainly more significant than computerised extrapolations across a continent from a peninsular.

What changed in 1980?

Martin Cropp
Reply to  M Courtney
May 10, 2019 1:55 pm

MC – what happened after 1980?

Atmospheric circulation changes due to a phase of I creased tropical convection, causing increased ozone dilution above Antarctica and increased volumes of cold surface atmosphere flowing off the continent creating conditions for increased sea ice.

The barriers to transport of tropical convection to the south pole strengthened causing more of that tropical heat to go to the Arctic which is the weaker pole. Arctic amplification is a natural phenomenon that results in warmer atmosphere and sea surface disturbance lowering sea ice and short periods of rapid surface melt on Greenland.

The cooling of Antarctica is the result of increased tropical convection.

M Courtney
Reply to  Martin Cropp
May 10, 2019 11:57 pm

Thank you, Martin Cropp. That sounds plausible.

Reply to  M Courtney
May 11, 2019 7:11 am

Another thought in the same vein. It may be fruitful to discuss the Arctic/Antarctic variations in light of this article and that just forwarded by Willis re: ENSO. The polar seesaw has been observed for decades. If Willis is correct, periods of increased el ninos warm the northern hemisphere (especially oceans) but not the southern hemisphere. Would periods dominated by la ninas do the opposite, create the seesaw. I’m a firm believer in ocean control of the climate. As our knowledge increases slowly, and bit by bit, we may unravel some of the major events causing observed variations. If there are patterns, and if they persist, we may be better able to decipher why climate change occurs. Willis showed a short-term response to el nino (months), but with longer effect in ocean temps than land temps. The minor warming presently occurring, therefore, could relate to the number and timing of el nino/la nina events. May be worth some discussion.

Reply to  M Courtney
May 10, 2019 3:17 pm

Satellite data is not looking at the ground and it is not computerized extrapolations. It is looking at the atmosphere above the ground, pixel by pixel. It is saying there is no long-term atmospheric warming over the Antarctic.

M Courtney
Reply to  RB
May 10, 2019 11:59 pm

RB, Satellites do look at the atmosphere.
But they also don’t cover the poles well or they fall out of the sky.

May 10, 2019 12:38 pm

“Antarctica warming” is kind of like “oceans acidifying.”
From about 1958 to about 1990 Antarctica became, on average, a smidgen less brutally cold.
Like the oceans became, on average, a smidgen less caustic.
Which means the sky is falling.

Hoyt Clagwell
Reply to  Dave Burton
May 10, 2019 3:02 pm

A couple of years ago there was an article picked up by several news sources that record high temperatures were being recorded in the arctic. One news source described the temps as “freakishly warm” and “super hot.” The accompanying graph showed the temperatures were actually far below freezing. The graph was then quickly deleted from the article.

May 10, 2019 12:38 pm

With the Antartica icecap at an average altitude of 8,200 feet, and with an average temperature of about -40 C or colder with 6 months of that in near darkness, it isn’t surprising there hasn’t been any warming and little effect on melting the southern continent that has been frozen over in an ice age for 34 million years. And with CO2 levels higher than now, including much higher average global temps for the majority of that time that didn’t see Antarctica melt since 34 MYA.

It is also probable as NASA has even published, that the southern icecap has been acquiring more annual snowfall than what ice melts, sublimates or slides into the sea as ice. This probably explains why there is no acceleration in SLR globally, as we know the temperature of the oceans is increasing slightly and thermally expanding, including some melting from Greenland and other terrestrial glaciers around different regions of the good Earth. If the general population were aware of these statistics, including no net warming in Antarctica the last 30-40 years, I think everyone would relax a little on any impending global climate emergency.

Reply to  Earthling2
May 13, 2019 9:17 am

Beneath your feet at the South pole lie over 3000 metres (about 9800 feet) of ice, 4000 metres (13,123 feet) in parts, which rests not on the sea but on land. Antarctica is a frozen continent larger than Europe, larger even than the United States and Mexico combined. A massive icecap covers 98 percent of that land, swallowing a continent higher than any on Earth. The length of the polar winter night increases with latitude until at the pole itself, the sun sets just once a year. For a while after it disappears, the setting sun provides aglow above the horizon, and then leaves the polar world in complete darkness for half the year
The warmth the polar regions absorb in the summer is far less than the heat they lose in the winter. Only in November and December, the very height of the Antarctic summer, does the South pole actually gain heat. The Antarctic is much colder than the Arctic. The average winter temperature in the Antarctic is minus 60 degrees Celsius. Even on a good summer’s day it’s minus 30 degrees Celsius, colder than the coldest winter’s night at the North Pole. Antarctica is the highest continent on Earth, three times higher than any other.
There are larger waves, stronger winds, and more powerful currents in the Southern Ocean than anywhere else on the globe. Icebergs are a real threat to shipping. At times they show up on the radar screen as hundreds on tiny white dots, which in reality could be an iceberg which could easily sink the largest vessel. It is absolutely essential to keep a lookout posted around the clock, and many captains prefer to avoid travelling at night whenever there are lots of icebergs about. On land, cold air from the high continental plateau rushes down the gradient to the sea causing katabatic winds. These can reach over 300 kilometres an hour and add terrifying windchill to the already freezing conditions.
If you sail around Antarctica, you will see mainly white ice. Sometimes it towers over you as mighty ice shelves. Elsewhere great glaciers tumble into the ocean, calving off icebergs which make navigation very dangerous.
The above was written by Alistair Fothergill in his book ‘Life in the Freezer’, published in 1993 before the current climate change hysteria..
Fast forward to the present. Greenpeace on its website states that ‘… parts of the Antarctic are warming three times as fast as other parts of our planet. Scientists recently recorded its warmest day ever – a distinctly not-freezing 17.5°C’ and also that ‘Changing ocean temperatures are also important, because they warm the massive Antarctic glaciers from below, making them less stable.’
Quite how changing ocean temperatures are warming the Antarctic glaciers from below given that the Antarctic is a land mass below ten thousand feet or so of ice is not explained – but then, who needs explanations, the scary story is what counts. And where exactly was the claimed temperature of 17.5 degrees measured, and under what circumstances? The British Antarctic survey states; ‘Around the coasts of Antarctica, temperatures are generally close to freezing in the summer (December-February) months, or even slightly positive in the northern part of the Antarctic Peninsula. During winter, monthly mean temperatures at coastal stations are between -10°C and -30°C but temperatures may briefly rise towards freezing when winter storms bring warm air towards the Antarctic coast. Conditions on the high interior plateau are much colder as a result of its higher elevation, higher latitude and greater distance from the ocean. Here, summer temperatures struggle to get above -20°C and monthly means fall below -60°C in winter. Vostok station holds the record for the lowest ever temperature recorded on the surface of the Earth (-89.2°C).

Greenpeace also say that ‘ Glaciers form on the Antarctic landmass as snowfall compresses into ice over time, and they flow under their own weight towards the ocean – like a very slow river. But as these glaciers feel the heat of a warmer ocean underneath them, they speed up their slow march to the coast, causing big chunks of ice to break off into the sea as icebergs at a faster speed. The melting and break down of glaciers into the ocean raises sea levels all around the world. Antarctic glaciers are now losing ice faster than snow is falling to add new ice. The rate at which Antarctic ice sheets melt under increasing temperatures will affect coastal communities globally, whether living in small island states or mega-cities.’
Yet there have clearly always been plenty of icebergs in the Southern Ocean. Greenpeace are yet again telling us fairy stories (to put it politely).

Bruce Cobb
May 10, 2019 12:46 pm

Of course Antarctica is cooler; cold settles. Duh.

Brian Bellefeuille
Reply to  Bruce Cobb
May 10, 2019 2:23 pm

Makes sense. Also explains the Arctic getting warmer, heat rises. Someone should notify the UN.

Ron Long
May 10, 2019 12:50 pm

Wait a minute, how can you call rising from -20 deg C to -16 deg C “slight warming”? The rest of the Earth only has 12 years left to live with + 1.5 deg C warming. Shirly, all of the polar bears and penguins died during this earth cooking + 4 deg C event? Well? Are there polar bears in Antarctica? No! Penguins? Still a few but we are regularly informed that they are dying wholesale. We’re doomed! And to double-down on stupid, my wife and I are about to leave for vacation in Hawaii (when we obviously should be going to Iceland). Sarcasm? Me?

Rick C PE
Reply to  Ron Long
May 10, 2019 1:39 pm

Ron: I just checked and you should avoid Honolulu or you’ll surely be roasted. Honolulu has the highest average annual temperature of any major US city at over 24 C (anomaly of 9 C) that’s 6 times the 1.5 C increased temperature level that is going to result in environmental disaster. You couldn’t pay me enough to visit this hellhole. /s/

May 10, 2019 12:52 pm

One explanatio for this lack of warming is probably that more CO2 in the atmosphere is actually expected to cause cooling in inland East Antarctica where there is a semi-permanent temperature inversion. Below are three IR spectra from Sahara, the Mediterranean and Antarctica. Notice that the radiation is actually slightly increased not decreased in the H2O and CO2 absorption bands:

comment image

May 10, 2019 1:03 pm

Seas will not rise fast if Antarctica doesn’t warm up. That’s good news for the Maldives that according to top scientists 30 years ago should already be gone do to sea level rise.

Gary Pearse
Reply to  Jared
May 10, 2019 1:54 pm

Jared, these coral islands grow with sea level rise. They actually kept pace with much more rapid sea level rise with the melt back of the last glacial maximum. The sea rose ~ 120m and guesd what? When the US drilled Bikini Atoll (atomic bomb test site) in the 50s, they went through 120m of coral limestone and into volcanic rocks. A study done by NZ researchers using 1940s areal photos to compare with modern photos, they determined that most of the South Pacific islands had increased in area and stood the same elevation above sea level that they did before, despite continuous sea level rise. These things are alive!

Gary Pearse
Reply to  Gary Pearse
May 10, 2019 1:56 pm

‘aerial photos’ that is.

Neal in Houston
May 10, 2019 1:06 pm

Perhaps consider adding this plot to the Reference Pages/Global Temperature Page.

May 10, 2019 1:19 pm

Sarc on, panic now,as the POLE freezes,the sea ice will expand ever northward, eventually(Sorry suddenly and catastrophically) rendering the souther sea lanes unusable.
Doom Doom Doom.
Mark Twain springs to mind; “Science is wonderful,you can gain so much speculation from so few facts”Paraphrasing of course.
Or as we are discussing Climatology,extrapolating linear trends from cyclic data is so much fun.

Reply to  John Robertson
May 10, 2019 3:48 pm

Sarc on, panic now,as the POLE freezes,the sea ice will expand ever northward, eventually(Sorry suddenly and catastrophically) rendering the souther sea lanes unusable.
Doom Doom Doom.

Well, actually, as the sea ice around Antarctica relentlessly expanded from 1992 through 2016, the projected sea ice edge would close the Straits of Magellan and Cape Horn in 2023 – 2025 in September each year.

(Now, that threat has been eased since the NSIDC put the Cryosphere Sea Ice group out of business in mid 2016 and “retired” its primary researchers. Once the NSIDC secured its data, Antarctic sea promptly receded back to its “proper” -1.5 million km^s loss that their CAGW theory calls for in only 3 months. But, in June 2014, just the “excess” sea ice around Antarctica exceeded the entire area of Greenland!)

Reply to  John Robertson
May 10, 2019 8:32 pm

“…gain so much speculation from so few facts…”

I think you meant to say “such big grants”.

Bart Tali
May 10, 2019 1:32 pm

Antarctica’s albedo appears to have increased over most of the continent, which could explain the cooling.

Speculation: fresh snow has a higher albedo than ice, so if Antarctica gets more snow as has been reported by NASA, it would cause cooling.

Reply to  Bart Tali
May 10, 2019 3:44 pm

Bart Tali wrote, “Antarctica’s albedo appears to have increased over most of the continent, which could explain the cooling.”

Well, maybe.

Antarctica doesn’t absorb much sunlight, anyhow. Even though Antarctica is very cold, so it doesn’t emit much radiant energy (and all of it at long IR and microwave wavelengths), it still emits more radiative energy than it absorbs from the Sun, year-round.

The deficit is made up by (relative) warmth carried in by moving air. That’s why the Antarctic interior has an upside-down lapse rate: the air is warming the ground, instead of vice-versa.

“Albedo” is a shorthand that aggregates color changes across the solar or visual spectrum (solar, in this context). Those color changes presumably also affect the rate of emission of very longwave radiation, rather than just the rate of absorption of solar radiation. If they are affected equally, I think raising the albedo would make Antarctica warmer, rather than cooler, because it would reduce radiative emissions by more than it would increase absorption of solar radiation.

But that’s a big “if.” I don’t know that higher albedo (lower emissivity) in the “solar” range of wavelengths necessary also means lower emissivity in the longwave IR and microwave bands where Antarctica emits.

Here’s a paper, about how Antarctica’s upside-down lapse rate causes a negative greenhouse effect:

Reply to  Dave Burton
May 10, 2019 4:34 pm


“…because it would reduce radiative emissions by more than it would increase absorption of solar radiation.”

should be:

“…because it would reduce radiative emissions by more than it would reduce absorption of solar radiation.”

I hate it when my mistakes invert my meaning!

Bart Tali
Reply to  Dave Burton
May 11, 2019 12:13 am

Thanks, yes, I like the terminology “reverse greenhouse effect” and this seems to be happening in Antarctica.

Albedo fresh snow:~80%
Albedo ice: ~40%
Warmer ocean -> more evaporation -> more water vapor -> more precipitation -> dumped as fresh snow on Antarctica.
More fresh snow on Antarctica, more albedo, less upwelling IR, less greenhouse effect.

May 10, 2019 1:57 pm

We can expect those temperatures to be “adjusted” in 3…2…1…

May 10, 2019 1:59 pm

That was the Steig et al. Nature cover that recently a CBC “journalist” , Nicole Mortillaro senior Science Reporter, included in her article…
Not at all bothered by the fact it had been debunked by O’Donnell et al.

May 10, 2019 2:34 pm

Obviously those thermometers need to be replaced closer to some diesel generators. /sarc

steve case
May 10, 2019 3:20 pm

Climate data shows no recent warming in Antarctica, instead a slight cooling

What it really shows is Antarctica is NOT melting. Do a “Google News Search on “Antarctica”
and then a search for “Melt” on the results.

About 15% of the articles blab about Antarctica melting.

Reply to  steve case
May 10, 2019 5:25 pm

If you are able to scientifically contradict the stuff below

(unluckily behind paywall)

please do!

I can’t 🙁

Alan Tomalty
Reply to  Bindidon
May 11, 2019 12:48 am

The study was of the Antarctica peninsula and the western ice sheet. All of this is caused by geothermal ridges warming the waters. And they used models to predict the melting rates. The rest of Antarctica is not melting which is 97% (if you don’t count the western ice sheet) ( ha ha) of it .

steve case
Reply to  Bindidon
May 11, 2019 12:57 am

Bindidon … 5:25 pm
If you are able to scientifically contradict the stuff below

please do! I can’t

I can certainly comment. From your first link:

For now, though, the vast majority of the losses comes from vulnerable West Antarctica, where the intrusion of warm ocean water is melting some glaciers from the bottom up…

We are asked to believe that warm ocean water flows under the sea ice, under the floating ice shelf and then melts the glacier at the grounding line. Warm water rises, it doesn’t sink and flow under the ice. There are lots of lies in the whole body of “Climate Change” that are repeated endlessly, and this is one of them. Here’s an example of the usual claptrap:×440.jpg

From your second link:

Although locally important, spatially integrated sublimation and meltwater runoff are typically one and two orders of magnitude smaller, respectively.

In other words, melting isn’t an issue. Since everything “Climate Change” is exaggerated, it’s probably two or three orders of magnitude.

And then this:

Over this period, ocean-driven melting has caused rates of ice loss

See my comment about warm water flowing under the ice above.

Reply to  steve case
May 11, 2019 3:30 am

steve case

“I can certainly comment.”

Exactly what I did not ask for… because for that trivial task I truly need nobody.

May 10, 2019 3:27 pm

“instead a slight cooling”

Ah well, there you go, proof of catastrophic anthropogenic global climate change warming if ever I saw it…..

“Consistent with” in any case…….

May 10, 2019 3:55 pm

Never mind, the Green warmers will after much searching, still find some
warmth somewhere.

It might only be one hundredth of a degree, but its still warmth.


Reply to  Michael
May 10, 2019 5:16 pm

The instrument error must be less than 0.001C for them to be able to measure the temperature with an “accuracy of 0.01.

May 10, 2019 5:17 pm

I don’t know anything about this Norwegian site.

I prefer to have a look at the well-known KNMI Climate Explorer:
comment image

and to download the corresponding data (anomalies wrt mean of 1981-2010):

37 stations with at least 10 years with full data.

That gives you the following chart (starting with 1958, to exclude the strange drop before):

Warming until about 2005, and stable since then.

May 10, 2019 8:00 pm

“that threat has been eased since the NSIDC put the Cryosphere Sea Ice group out of business in mid 2016”

Are you saying there is a deception? And that Antartic sea-ice is not at an all-time satellite era low for the date?

May 10, 2019 8:05 pm

“No warming has occurred on the South Pole from 1978 to 2019”

This is one station isn’t it?

“The linear trend is flat!”

With the actual trend line omitted it is not easy to tell given the variability, but eye-balling it says there is a rise.

May 10, 2019 10:58 pm

It’s all academic as we just need to do sumpink. Anyfink just do sumpink or we’re all doomed!

May 10, 2019 11:44 pm


Hey, everybody, click on Bindidon’s first link! It shows ten degrees (10°C) of cooling in the 1950s, i.e., just before the start of that first RIMFROST graph.

It shows that during the 1940s and early 1950s Antarctic temperatures were about 6°C warmer than at present. Can that be right?!?

Anthony, interestingly, that image “embedded” in the email alert I received, which is why I noticed it. I got all excited, thinking that embedding images in comments is working again! Unfortunately, it’s apparently only working in the email alerts, not on the web page.

I sure miss that feature! (hint! hint!)

steve case
Reply to  Dave Burton
May 11, 2019 1:02 am

And I’m sure you’ve noticed that some people can post images.

Besides that, after I click on [Post Comment] it takes a very long time, 20 minutes to an hour, before my post appears and sometimes my post never appears.

Reply to  Dave Burton
May 11, 2019 4:07 am

Dave Burton

I didn’t show that in my graph above because it looked a bit too strange, like a harsh measurement anomaly (this time the word is correctly used, haha).

But… the data after all successfully passed GHCNM correction.

May 11, 2019 12:02 am

“What we continue to do, what we do that is new, and what we plan to do over the next 10 to 12 years will determine the future of humanity for the next 10,000,” says our Cambridge Don.
You can say that again but these boofheads don’t do irony.

May 11, 2019 7:03 am

Antarctica is a natural control for the effect of CO2 on temperature.
1) There is no H2O in the air
2) Its temperature in near the IR temp of 13 to 18µ that CO2 absorbs
3) It is far removed from any Urban Heat Island Effect

What do you find when you control for all the factors corrupting temperature data? No warming.
Isolating the Impact of CO2 on Atmospheric Temperatures; Conclusion is CO2 has No Measurable Impact

Mike Borgelt
Reply to  CO2isLife
May 11, 2019 7:34 am

” the IR temp of 13 to 18µ ”

Sorry, IR has no temperature.

Reply to  Mike Borgelt
May 11, 2019 9:23 am

Sorry for the confusion. A black body of temperature -80 deg C emits LWIR of peak wavelength 15µ. You can verify that at Spectral Calc.

Reply to  CO2isLife
May 11, 2019 11:33 am

CO2isLife wrote, “Sorry for the confusion. A black body of temperature -80 deg C emits LWIR of peak wavelength 15µ. You can verify that at Spectral Calc.”

First of all, Antarctica is very atypical, because the Antarctic interior has an upside-down lapse rate. That makes it the worst possible place on the entire planet to look fingerprints of so-called “greenhouse” warming.

Second (although blackbody spectral peaks seem off-topic to this discussion), it is worth noting that the location of a blackbody’s emission peak depends on how you denominate your “color” axis (typically the horizontal axis).

If you use wavelength for the “color” axis, the blackbody emission peak is as you described:
At -80°C (193.15K), the emission peak is at 15.00 µm.
At 300K (26.85°C), the emission peak is at 5.056 µm.

But look what happens if you use wavenumber (or frequency) for the “color” axis:
At -80°C (193.15K), the emission peak is at 378.769 cm⁻¹, which is 26.40 µm.
At 300K (26.85°C), the emission peak is at 588.303 cm⁻¹, which is 17.00 µm.

Reply to  Dave Burton
May 11, 2019 3:21 pm

At 300 K the emission peak for wavelength distribution is at 9.659 µm.

Reply to  CO2isLife
May 11, 2019 8:45 pm

You’re right, teerhuis. Thank you for the correction. I don’t know how I botched that.

-80C by wavelength, peak is at 15 µm, as CO2isLife mentioned.

300 K by wavelength, peak at 9.659 µm (not 5.056 µm); screenshot:
comment image

-80C by wavenumber, peak is at 378.769 cm⁻¹, which is 26.40 µm; screenshot:
comment image

300 K by wavenumber, peak at 588.303 cm⁻¹, which is 17.00 µm; screenshot:
comment image

Mike Borgelt
Reply to  CO2isLife
May 11, 2019 7:37 am

More precisely, photons do not have “temperature” no matter what frequency/wavelength they are.

May 11, 2019 6:18 pm

“First of all, Antarctica is very atypical, because the Antarctic interior has an upside-down lapse rate. That makes it the worst possible place on the entire planet to look fingerprints of so-called “greenhouse” warming.”

Antarctica is the ideal location to identify the CO2 signature. You need very dry air, even distribution of CO2 and no urban heat island effect, high albedo on an even color background, a surface that readily absorbs the back radiation. What difference does the lapse rate matter when you are dealing with temperatures measured 6 ft off the ground? None.

The color axis is irrelevant, CO2 absorbs 13 to 18µ LWIR, that isn’t a calculation, that is an observed measurement. Snow is white anyway so reflection is more important. The black body reference was simply to explain my original comments.

If the Antarctic isn’t the perfect control, where is? The high deserts? Same result, no warming with an increase in CO2.

Bart Tali
Reply to  CO2isLife
May 12, 2019 11:01 am

High albedo places like Antarctica should be less affected than low albedo places like the ocean from an increasing greenhouse effect. And when measured, Antarctica is indeed warming more slowly than higher albedo places.

Antarctica is ideal to show how much the albedo effect matters in relation to countering the greenhouse effect.

Andy Moore
May 16, 2019 11:06 am

Since we are talking about “Global Warming”, are there similar statistics for the Arctic ?

nigel goodwin
May 20, 2019 5:31 am
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