Here’s the abstract:
The writers investigated the effect of CO2 emission on the temperature of atmosphere. Computations based on the adiabatic theory of greenhouse effect show that increasing CO2 concentration in the atmosphere results in cooling rather than warming of the Earth’s atmosphere.
Wow! How did they come up with that? Here’s their calculation:
To evaluate the effect of anthropogenic emission of carbon dioxide on
one can use the adiabatic model together with the sensitivity analysis
2001; Khilyuk and Chilingar, 2003, 2004). At sea level, if the
pressure is measured in
atmospheres, then p = 1 atm and
ΔT ≈ TαΔP (12)
If, for example, the concentration of carbon dioxide in the atmosphere
increases two times
(from 0.035% to 0.07%), which is expected by the year of 2100, then
pressure will increase by Δp ≈ 1.48×10-4 atm (Sorokhtin,
2001). After substitution
of T = 288 K, α = 0.1905, and Δp = 1.48×10^-4 atm into Eq.
(13), one obtains
ΔT ≈ 8.12×10^-3 °ree; C. ΔT will be slightly higher at
the higher altitudes (Khilyuk
and Chilingar, 2003). Thus, the increase in the surface temperature at
sea level caused
by doubling of the present-day CO2 concentration in the atmosphere
will be less than
0.01°C, which is negligible in comparison with natural
temporal fluctuations of global
Where is the greenhouse effect in their equation 12? Well, it’s included in the coefficient α, which they assume will not change if CO2 is added to the atmosphere. That is, they assume that CO2 is not a greenhouse gas. And yes, if the laws of physics were different and CO2 was not a greenhouse gas, adding it to the atmosphere would have a negligible effect on temperatures. Duh.
In fact, their model can’t tell us how much warming to expect if CO2 is increased, since to estimate α they use the observed warming from the natural greenhouse effect. To get the new value of α you would get with increased CO2, you would have to know how much this warms the planet.