“Why MAN MADE Global Warming is Ridiculous”
I have written about a great many different aspects of Global Warming from the story behind Al Gore's involvement to a discourse on the impact of the billions of dollars of Federal Grant money that goes out to researchers who produce scientific papers that supposedly “prove” global warming is a serious problem. In the process, I have read hundreds of articles and scientific papers and listened to hundreds of interviews. I remain convinced that there is no significant man-made global warming. Now I received a short paper by a retired Physicist in San Diego who provides a fresh scientific approach to explaining the folly of man-made global warming. If you are able to work your way through a bit of sophisticated physics this explanation will be very convincing. Even if you get a little lost in the scientific content, the explanation can still give you an insight into how to look at this issue from a purely scientific point of view. The man who wrote this is Burr Passenheim, a retired Physics Professor. Here is his paper:
Why MAN MADE Global Warming is Ridiculous
Burr Passenheim (Ph.D. Physics)
The earth's temperature is changing, and has always been changing. And mankind's contribution is insignificant.
The earth receives all of its energy from the sun in the form of sunlight. To us that light looks white. A physicist would say it is “blackbody” radiation from an object (the sun) at about 6000-deg(Kelvin). A rainbow shows that “white” light is actually composed of colors from violet to red. Visible light's spectrum peaks at a wavelength about 0.5 microns (green). At the top of our atmosphere the solar intensity is about 1 (kilowatt per square meter).
The sun heats the earth to a temperature [roughly 300 deg(K)] at which temperature the earth re-radiates an equal amount of power. A 300 deg(K) blackbody radiates power in the Infrared (IR) i.e. at wavelengths greater than 4 microns , with a peak intensity at about 10.0 microns.
All this is necessary for the earth to have a stable temperature (neither boil nor freeze)
The earth's temperature is dominated by the sun's intensity, which is not constant, and the earths orbit and tilt, which also vary. But the earth's atmosphere does have a meaningful role in Global Temperature.
All incident Ultra-Violet (UV) light from the sun is absorbed in earth's upper atmosphere by Oxygen [mainly Ozone ( O3)] and does not heat the earth..
All infrared radiation beyond about 20 microns is absorbed by water vapor, also called humidity, and is trapped in the atmosphere. . Humidity is the most important greenhouse gas. Humidity is invisible to humans.
Carbon Dioxide (CO2) is a gas that is ESSENTIAL to all life on earth. Animals breath in Oxygen (O2) and breath out Carbon Dioxide (CO2) [respiration]. Plants absorb CO2 and release O2 [photosynthesis]. Without CO2 there would be no O2 and vise versa, so neither plants nor animals could exist.
CO2 does have one significant absorption band in the Infrared (IR), at about 15 microns. CO2 is VERY opaque at that wavelength. Virtually all IR radiated by the earth at 15 microns is absorbed in about 10 meters (about 30 feet) of air. So raising or lowering the concentration of CO2 does next to nothing to how opaque the atmosphere is at the 15 microns. You can not absorb more than everything.
Consider this visible analogy. If an object is black, it means that it has absorbed all the visible light falling on it. If you add another coat of black paint, it is not any blacker. It can not absorb more than everything!
To be scrupulously accurate, while all 15-micron IR is 100% absorbed, the width of the 15 micron band does increase and decrease as the CO2 concentration waxes and wanes. But the absorption of the 15-micron band increases as the logarithm of the CO2 concentration. This means that to double the absorption at 15 micron, you need to raise the CO2 concentration 10- fold. To triple the absorption, you must raise the CO2 concentration 100-fold. Keep in mind that CO2 has always been much less important than humidity, as a green house gas.
And, it is also true that the earth's temperature and atmospheric CO2 seem to rise and fall together. But if you look a bit closer, the temperature always “leads” the CO2 concentration. Which means the earth's temperature is the “cause” and CO2 concentration the “effect”, not the other way around. The reason is, that CO2 is soluble in water (think of carbonated beverages), and as the oceans warm up they “outgas” CO2. When the oceans cool down again (ice ages) they reabsorb the CO2.
So it is not worth spending money to reduce man-made CO2, because that is not the problem…if there is a problem.
My thanks to Dr. Passenheim for sharing his paper with us.
All of my global warming blogs and related videos and links and articles are all located on the Coleman's Corner page of the KUSI Website at: http://www.kusi.com/category/195823/colemans-corner