In the above video, it highlights many of the principles that we’ve discussed on this blog, and are not taught in your average high school climate change lecture. This video, however, provides much of the information to debunk the climate change alarmism.
Term Paper Points:
- In the video, it highlights that CO2 has 3 Long Wave Infrared (LWIR) Absorption Bands. One at 2.7µ, another at 4.7µ and the last, and most important at 15µ. Those bands represent CO2 stretching and bending. The bending is at 15µ and is the absorption relevant to global warming. More information can be found by clicking here. (Note: In the video, it is stated that CO2 absorbs 7µ. That is immaterial as highlighted in the data I’ve seen)
- The 15µ +/-2µ band is associated with a black body temperature of -50 to -110°C, a peak of -80°C temperature. This can be verified by clicking here.
- Both CO2 and H2O absorb 15µ LWIR, so the overlap makes CO2 irrelevant in the troposphere. CO2 is 400 Parts Per Million or PPM, whereas H20 can be as high as 4 parts per hundred. 400 ppm is the equivalent of 1 CO2 molecule for every 2,500 air molecules.
- The only defined mechanism by which CO2 can affect climate change is through “thermalization” of LWIR of 15µ +/-2µ. What that means is that by vibrating 1 molecule out of 2,500, somehow you can cause catastrophic warming. That is absurd given that the only place you even see the CO2 signature is up over 3 km when the air is starting to get thin.
- There is no defined mechanism by which CO2 can cause cooling. Its only mechanism is thermalization which converts LWIR from electromagnetic energy to kinetic energy. The Greenhouse Gas Effect is done through the conversion of one form of energy to another and is consistent with the 1st Law of Thermodynamics.
- CO2’s absorption of LWIR isn’t linear, it is logarithmic. What this means is that its effect has a rapid decay, much like taking painkillers. The first shot of morphine relieves 90% of the pain, and any following shot has a smaller and smaller impact. Another analogy is painting a window black. The first coat blocks out 90% of the light, and any following coats block out less and less light. CO2’s thermalization effect is most noticeable between 0 ppm and 300 ppm, after which the additional absorption rapidly decays. A graphic highlighting this can be found by clicking here. More details can be found by clicking here.
- The computer models all fail because they assume a linear, not logarithmic, relationship between CO2 and temperature. The physics don’t support that relationship. Click here for an example of a linear climate model, and click here to see the results of the models. Click here for more information.
- As mentioned above, CO2 and H2O absorb the same LWIR bands, and H2O absorbs a whole lot more making CO2 irrelevant in the troposphere outside Antarctica. H2O is by far the most significant greenhouse gas (GHG). More details can be found by clicking here. A graphic detailing the LWIR absorption of GHGs can be found by clicking here.
- To isolate the impact of CO2 one would need to remove H2O from the atmosphere. The closest environment to that is Antarctica which has very cold and very dry air. Antarctica has shown no warming in over 50 years, even though CO2 in Antarctica has increased substantially. Learn more by clicking here.
- Because ground measurements are located near the ground, any warming that can be attributed to the GHG effect would be due to H2O, not CO2. The first a CO2 signature can be identified is up over 3 km. Learn more by clicking here. The program for modeling the atmosphere is called MODTRAN, and can be found by clicking here.
- Note in the video at 3:30 it is clearly stated that H2O overlaps and dominates CO2. Click here for the video clip.
- In the video, it is stated that H2O is responsible for 30°C of the total 33°C GHG Effect, and CO2 is due to 3°C. That may or may not be true due to the inability to separate out the impact of H2O and CO2 in the lower atmosphere. Also, CO2’s major contribution to warming is when it increases from 0 to 300ppm, additional CO2 does very little to impact the energy balance. Lastly, CO2’s signature is firsts noticed up above 3km, well above the most glaciers and ground-based thermometer measurements.
- The temperature of the earth is around 300°K, so CO2’s 3°C contribution is only 1% of the total energy balance, and decays exponentially with additional CO2. Additionally, to reach this conclusion scientists convert W/M^2 into temperatures, which may or may not be applicable to the lower atmosphere with regards to CO2. This can be observed using the MODTRAN program by clicking here.
- At 6:50 in the video, it covers how increasing CO2 from the current level will do very little if anything to atmospheric temperature. Click here for the video clip. The reason for this is once again, the logarithmic relationship of the CO2 concentration and absorption. You can only absorb and thermalize 100% of the LWIR of 15µ, once 100% is absorbed by H2O and CO2, adding more CO2 and H2O can’t absorb any more. If you place a hose in a 1-gallon bucket and leave it running, the bucket will never hold more than 1 gallon, any additional water simply spills out of the bucket.
- Note, at the end of the video the professor states that he is simply explaining the physics, and not explaining the climate. Only when the interpretation is made by climate scientists do things go off the rails. As the video demonstrates and has been explained on this blog, the physics don’t justify CO2 being a major contributor to warming.
- There is no way for CO2 to cause record high temperatures. CO2 traps outgoing radiation from the earth. Incoming radiation is what drives the system’s temperature higher, and CO2 and H2O slow its cooling. Putting a blanket on something doesn’t warm it, it slows its cooling. Click here to learn more. Click here for another article.
- Lastly, as pointed out in the video, the atmospheric window between 8 and 15µ really determine the climate. That range is essentially the earth’s chimney giving free passage of radiation to outer space. That range is also centered around 10µ which is consistent with the earth’s temperature, the 15µ represents a floor, helping to keep the atmosphere above -80°C. Remember the longer the wavelength the less energy it possesses, wavelength and energy are inversely related. If you want to explain the climate you have to explain what happens in the atmospheric window. If something changes in the atmospheric window that alters the amount of energy reaching the oceans, then you will see real climate change. If the earth is warming, we shouldn’t be looking at CO2, we should be looking to see if more incoming warming visible radiation is reaching the oceans. Click here for more detail. Clouds are like shades to a room, and the more clouds you have, the less radiation reaches the earth. Cosmic Rays regulate the clouds in the sky, and those are determined by the sun. Click here for more detail.
- The explanation in the video is not complete and did not associate CO2, 15µ and its blackbody temperature of -80°C. CO2’s influence is to the far right of the atmospheric window, representing the long end of the long wave IR spectrum. That is very low energy radiation and puts a floor in temperatures. Additionally, CO2 isn’t a blackbody, so the energy represented in its absorption may not truly represent -80°C. -80°C is a max temperature. This can be explored by looking at the MODTRAN output. CO2’s signature distorts only a fraction of the blackbody curve.
Click here for many more scientific arguments applicable to a climate change paper.
Another video worth watching that covers H2O.
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h/t Commentor Georg Thomas for the video and concept