Posted by BobG on April 5, 2007, 5:37 pm
As for the experiment, it's rather simple. Place a celestial body at
the same distance from Earth [from the sun?] but without an
atmosphere. Measure the
mean temperature of this other celestial body. If it is lower than
Earth's temperature. then we know that atmosphere has retained heat.
Mean temperature Earth: 15C, Moon -20C.
Now how much does CO2 affect this? Compare Earth to Venus. Venus's
atmosphere is 96% CO2. Mean temperature, an incredible 464 C. Far
higher than can be explained by the proximity of Venus to the sun.
Mercury, closer in, has a mean temperature of 167C.
Can you compute what the temperature on Venus would be with O2/N2
Could adding 0.03% by volume of CO2 to this increase the temperature?
Moon temperature doesnt help... The experiment is supposed to be
designed to show how CO2 causes heat to be retained. No CO2 on the
Posted by Arnold Walker on April 5, 2007, 7:19 pm
You might add in the an article by New Science that had physicist
an 1859 a solar flare did more damage to the ozone layer .In one day than
man did in 1000years.
The sun itself never figures in a lot of AGW predictions......and there
reason to believe another one ,on
that scale, is coming looking at solar activity..
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Posted by Tony Wesley on April 5, 2007, 10:26 pm
I can make a first approximation. From Moon (at the same distance
from the sun as Earth) to Mercury, mean temperature increases by
187C. From the Earth to Venus's orbit, the increase should be less IF
all other factors are held constant.
Instead, we see an increase of 450C.
See the first chart here:
Changes of 120 parts per million in the level of CO2 correlate to
temperature changes of about 8 degrees C.
Correct. The Moon shows that an atmosphere retains heat
Posted by Tony Wesley on April 5, 2007, 11:57 am
I agree that there is no sense in cursing at yourself due to your
ignorance. Ignorance can be cured.
Here's a simple experiment at:
Glass vessels containing air (right) and CO2 (left)
two lights of identical output
two pans with water
Temperature feeler (data registration by a computer)
Due to the infrared radiation absorbed by the pure carbon dioxide this
gas is heated by far stronger than the air consisting mainly from
nitrogen and oxygen. The fraction of carbon dioxide in the air is
acting as an greenhouse gas.
Posted by Todd on April 5, 2007, 4:44 pm
Doesn't this experiment show that an increase of CO2 of 270,000%
yields an increase of temperature of 15%? If so, and we increase the
atmospheric CO2 by say 1000% to 30.7%, wouldn't we then expect an
increase of temperature of 1/270 * 15% of 40C or 0.02C? Should we
really be scared?