In the last 25,000 years there has been an anti-correlation between rising CO2 and the Siberian Arctic temperature – the opposite of what is claimed by proponents of the anthropogenic global warming narrative.
According to a new study, Arctic Siberia was 4°C warmer than it is today from 15,000 to 11,000 years ago, when CO2 was ~240 ppm.
Image Source: Martens et al., 2023
Arctic Siberia was 5°C warmer than today (12°C vs. today’s 7°C) during the last glacial maximum, 26,000 to 19,000 years ago (Tarasov et al., 2021). At that time, CO2 was estimated to be 180 to 190 ppm.
It was so warm back when CO2 was below 200 ppm that horses, rhinos, bison, and mammoths could thrive in the Arctic, grazing on the abundant Siberian Arctic grass year-round, even in winter.
It is obviously far too cold for grazing megafauna to survive in this region of the Arctic today, with CO2 at 420 ppm.
2 responses to “Another New Study Shows The Siberian Arctic Is Warmer When CO2 Is Low And Colder As CO2 Rises”
[…] Another New Study Shows The Siberian Arctic Is Warmer When CO2 Is Low And Colder As CO2 Rises […]
Be a shame if it were discovered that a sane application of thermodynamics and the fundamental physical laws showed that the environmental whackadoos were yet again diametrically opposite to reality, eh?
The Arctic cools as atmospheric CO2 concentration rises; snow fall, far from being a “thing of the past” is at record levels in many parts of the world; the Southern Hemisphere cooling over the past decade and the Northern Hemisphere showing no trend despite more temperature sensors sited near urban heat sources; Central Europe 1.5 C cooler than the mean; Hachijo-jima Island showing no warming in 80 years; Tokyo showing no warming in 35 years; no climate trend across Greece since the 1800s; Earth’s mean annual temperature was warmer 31,000 years ago (long before there were SUVs)…
Gee, it’s almost as if they *are* diametrically opposite to reality. It’s almost as if CO2 is a net atmospheric radiative coolant.
Well, yeah, of course it is. And don’t they claim water is a “global warming gas”, too? Sure they do… except it’s a net atmospheric radiative coolant, too.
We live, at the surface of the planet, in what can be analogized to the evaporator section of an AC unit. The polyatomics act, via their higher DOF (Degrees of Freedom), to remove ~76.2% of all surface energy, convecting it then releasing that energy in the upper atmosphere, where the altitude / air density / mean free path length relation ensures the majority of that emitted radiation will be upwelling.
In fact, water acts as a literal *refrigerant* (in the strict ‘refrigeration cycle’ sense) below the tropopause… a coolant:
The refrigeration cycle (Earth) [A/C system]:
A liquid evaporates at the heat source (the surface) [in the evaporator], it is transported (convected) [via an A/C compressor], it gives up its energy to the heat sink and undergoes phase change (emits radiation in the upper atmosphere, the majority of which is upwelling owing to the mean free path length / altitude / air density relation) [in the condenser], it is transported (falls as rain or snow) [via that A/C compressor], and the cycle repeats.
It’s the same for CO2, but whereas H2O has latent heat of vaporization, CO2 doesn’t at prevalent Earthly temperatures, so its surface cooling contribution is less.
The proof, properly using thermodynamics and the fundamental physical laws, with the concepts and mathematics taken directly from Thermal Physics, 2nd Edition by Philip M. Morse, Professor of Physics at MIT, co-founding editor of Annals of Physics, co-founder of MIT Acoustics Laboratory, first Director of Brookhaven National Laboratory, founder of MIT Computation Center: