Temperature above blackbody and atmospheric pressure

[longview]

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.

Pressure	Temp above Blackbody	CO2 %	Mean Free Path
Venus	1380 PSI	505 C	0.0023um
Earth	14.2 PSI	33 C	0.089 um
Mars	0.89 PSI	0 to -9 C	20 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.

 

[Lord of Planar]

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.

 

[Lord of Planar]

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.

 

[BitterPill]

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.

Pressure	Temp above Blackbody	CO2 %	Mean Free Path
Venus	1380 PSI	505 C	0.0023um
Earth	14.2 PSI	33 C	0.089 um
Mars	0.89 PSI	0 to -9 C	20 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.

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.