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Temperature above blackbody and atmospheric pressure

longview

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I was reading the other day about Tyndall and his quote about the atmosphere being like a dam across a river.
This made me remember that the concept of the greenhouse was also related to atmospheric density.
Since the AGW alarmist like to work with temperature anomalies, one anomaly is the difference between the blackbody temperature and the average temperature.
If the difference is related to CO2 then the higher the CO2 percentage the higher the temperature anomaly should be, to the blackbody temperature.
I looked at the three samples we have Venus, Earth and Mars.

PressureTemp above BlackbodyCO2 %Mean Free Path
Venus1380 PSI505 C0.0023um
Earth14.2 PSI33 C0.089 um
Mars0.89 PSI0 to -9 C20 um
[td]
96.5​
[/td]​
[td]
0.0425​
[/td]​
[td]
95.97​
[/td]​
Venus and Earth follow a pattern, but Mars has a 95.97% CO2 atmosphere, but has a MUCH lower anomaly between the Blackbody and average temperature,
with some sources reporting an average temperature lower than the blackbody temperature.
I also listed the mean free path for all three to show that Mars's atmosphere while thin is still in a viscus flow state.
A photon emitted from Mars's surface would strike a CO2 molecule within the first 20 um.

The likely reason for the mars atmosphere to not cause a delta between the average temperature and the blackbody temperature is a lack
of any atoms or molecules to help get CO2 back to ground state. With 99.999999% of the CO2 always in an excited state, the atmosphere of mars
is almost completely transparent.
 
I never tried to consider the extent that atmospheric pressure causes. I jusk know it has a large effect. The cult likes to peddle the idea that the earths greenhouse gasses cause a 33 degree increase over the blackbody average. That however is very innacureate. The fact there is a fourth power relayionship between radient energy snd temperture should make that obvious to all concerned since it is a cyclical enery recieved due to planetary rotation. There is convection and conduction and this changes the spectral emmissivity for radient cooling as the values for any gas is diferent that the solid planet surface. There are other minor variables to concider too.
 
Your chart is misaligned and the Mars pressure is wrong. It might be interesting to use the CO2 partial pressure. For Earth, the partial pressure would be about 0.0061 psi and about 1,330 psi for Venus.

I am on monile at the moment else I would bring up a few more points.
 

This sentence puts me in an excited state:

With 99.999999% of the CO2 always in an excited state, the atmosphere of mars is almost completely transparent.​

so I'm glad I don't live on Mars.
 
OK, so I just did some calculations with Excel. I used wikipedi for quick data. Partial pressures of CO2:

Venus 1301.6 PSI
Earth 0.0061 PSI
Mars 0.089 PSI

I hadn't looked at this before. Mars has more CO2 than earth in a column of atmosphere. The gravity is not you in the calculations, but this is a huge difference.

Wiki also has the average temperature 505 degrees higher than the blackbody temperature of Venus. 32.1 higher for Earth and 4 degrees lower for Mars.
 
It struck me as odd that Mars would have an opposite temperature anomaly.
 
longview said:
It struck me as odd that Mars would have an opposite temperature anomaly.
Click to expand...
I don't think it's odd. Like I pointed out, averaging is linear, but forcing to temperature is a fourth degree equation. Planets rotate and their surface cycles hot and cold. Then the atmosphere helps reduce the rate of changed. I find it probable, with a thin atmosphere and 96% CO2 that CO2 is helping radiate heat away on Mars.

What I didn't realize until doing this is that Mars has so much more CO2 in a column of atmosphere.
 
I believe that in a nearly pure CO2 atmosphere, CO2 would spend most of the time in an excited energy state, and so would be transparent to most absorption.
 
Now if we factor in gravity, Mars actually has 38.3 times more CO2 than earth in a column of atmosphere. Venus is little changed from the partial pressure different since it has 0.904 G. Still, that ~10% change makes for Venus having a calculated 236,090 times more CO2 in a column of atmosphere than Earth has.
 
longview said:
I believe that in a nearly pure CO2 atmosphere, CO2 would spend most of the time in an excited energy state, and so would be transparent to most absorption.
Click to expand...
I really haven't though much of it, and maybe the difference is regarding conduction and thermal inertial with a nonlinear relationship.
 
I cannot pretend to understand all the variables, it just seemed odd that the hypothesis states that higher CO2 levels would produce higher warming,
But Mars is almost a total CO2 atmosphere and the black body to average temperature anomaly is negative to zero, ( I saw several sources that were different).
 
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