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CO2 is an insulating gas. It absorbs Infrared heat photons.

The Moon has no atmosphere and a day time temp of 250 F.. The Earth’s atmosphere blocks out most of the Sun’s heat from ever reaching the Earth’s surface, greatly cooling our planet. While water vapor is primarily responsible for this cooling, CO2 plays a role even if it is a lessor role.

Increasing water vapor naturally creates clouds. Clouds are the most insulating thing in the sky’s, a fact admitted by the IPCC. Because clouds are made of water vapor, they absorb lots of Sun heat. Blocking out the Sun’s heat as effectively as cloud cover does causes a deep drop in the Earth’s temperature not a rise. Yes, clouds do keep in 100,000 times more heat than CO2 does, but they also keep out 100,000 times more Sun heat from reaching the Earth’s surface and warming it up.

If the Earth doesn’t get warm, then it cannot radiate much heat out. It is heat radiate off the Earth’s surface that creates the greenhouse effect.

If the Earth never warms up, then it never give off heat, and there is no greenhouse effect at all. The more heat the Earth gives off the greater the greenhouse effect will be, but for the Earth to get warmer more of the Sun’s heat must reach the Earth and heat it up.

It is just like you oven at home. To get more heat you turn up the temperature knob. This burns more gas and makes more heat.

The oven is surrounded with insulation to keep the heat in so the burner that is inside the oven heats the food, not your kitchen.

However, if you take the burner out of the oven and set it in font of the oven door so it is outside the insulation. Then the heat from the burning gas cannot get to the food inside the oven.

The Sun is the Earth’s heater. Teh insulating gases in our atmosphere are between us and the Sun. Before the first photon of the day strikes the Earth’s surface, 66% of the heat photons have been blocked out by the greenhouse gases in the air.

Should we increase the amount of insulating gases in the air what will happen?

With more CO2 in the air absorbing more of the Sun’s heat before it can get to the Earth, the atmosphere should be warming and the Earth’s surface cooling; as the CO2 is catching more of the Sun’s heat that used to get down to the Earth.

And this is exactly what NASA says its satellites are measuring. The Earth’s Troposphere (the lowest portion of the atmosphere) is warming with increased CO2 levels, as it absorbs more of the incoming Sun heat.

We see this effect every time the sky is covered in clouds. The top of clouds are much warmer than the bottom of the cloud, as the top layer absorbs most of the incoming Sun heat, before it reaches the lowest portion of cloud. Likewise, your house’s insulation is much warmer next to the outer wall than it is next to the inner wall.

The outside of the house is getting the Sun’s heat, but the insulation absorbs it and sends most of it back outside. This is what insulation does. Prevents heat from crossing the insulation barrier.

Look at Venus, even with an atmospheric pressure of 90 atms, (90 times greater than the Earth’s atmospheric pressure), and Venus getting twice the solar intensity the Earth gets its temperature is only 895 degrees Fahrenheit. If the Earth had 90atms the Earth’s temeprature would be over 47,000 degrees F.

Don’t think so do you? Do the math yourself.

Here’s Gay-Lussac’s Law: T1/P1 = T2/P2.

The starting pressure T1, divided by the starting Pressure P1, is equal to the Ending temperature T2, divided by the ending Pressure P2.

The Earth’s starting temperature is 71.8 degrees F (295 degrees Kelvin). Its atmospheric Pressure is 1 atm. Venus atmospheric Pressure is 90 atm.

To solve for T2, the Earth at 90 atms, move P2 to the left side. that reverses the division to multiplication so now we have:

T2 = (T1/P1)x P2 Adding the numbers in we get

T2 = (295 K/1atm)x 90atm

T2 = (295) x 90

T2 = 26550 degrees Kelvin which converts to

T2 = 47,330.6 degrees Fahrenheit!

With the same 90 atms of Venous the Earth's surface temperature would be 47,330 degrees F. Remember the Earth gets only half the Solar heat that Venus does, so Venus should have a temperature twice the Earth with the same atmospheric pressure, yet Venus temperature is less than 10% of what is should be.

WHY?

An atmosphere that is 95% CO2 and that is 5 times bigger.

Russian landers on Venus recorded the same amount of Solar radiation on the surface of Venus as found on the Earth on a fully overcast day!

The Thick CO2 atmosphere absorbs the heat before it can get to the surface, just like clouds do here on Earth.

Scientist have discussed Clouds Seeding as a way of cooling the Earth. More clouds will absorb more incoming Sun heat, they say, and send it back out to space cooling the planet.

As NASA writes here:

http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/irwindows.html

“Most of the infrared light coming to us from the Universe is absorbed by water vapor and carbon dioxide in the Earth’s atmosphere. Only in a few narrow wavelength ranges, can infrared light make it through (at least partially) to a ground based infrared telescope.”

Clouds are made of insulating gas. Insulating gas that blocks Sun heat.
Insulating gases trap out much more heat than the can trap in. AS NASA says here:

Satellite measurements indicate that’, ‘Clouds, aerosols, water vapor, and ozone directly absorb 23 percent of incoming solar energy.”

Just as the major atmospheric gases (oxygen and nitrogen) are transparent to incoming sunlight, they are also transparent to outgoing thermal infrared. However, water vapor, carbon dioxide, methane, and other trace gases are opaque to many wavelengths of thermal infrared energy. Remember that the surface radiates the net equivalent of 17 percent of incoming solar energy as thermal infrared. However, the amount that directly escapes to space is only about 12 percent of incoming solar energy. The remaining fraction — a net 5–6 percent of incoming solar energy — is transferred to the atmosphere when greenhouse gas molecules absorb thermal infrared energy radiated by the surface.

23% of all radiation that reaches the outer atmosphere is blocked out, only 77% makes it to the surface. Of that 77% only 5–6% is absorbed and reflected back at the earth.

5–6% That is not much. Meanwhile 23% is blocked out!

GHGs cool the Earth mush more than the warm it.

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