wanton dwarf
Member
The solar energy input from the sun is irrelevant. Currently the world is in a virtual balance, we know this is a very fine thing and the energy priduced by burning fossil fuels is largely irrelevant, even though it is releasing a large amount of extra energy it makes no odds as the extra heat is lost quicker.
What is the issue is the thermal blanket around the world created by the atmosphere. Without this blanket we would be a very cold world indeed, with it we have settled in a balance. The problem being that it would appear that CO2 is a relative effective insulator than the other gases. It is quite easy looking at graphs of temperature shows a clear link between low concentrations under 200ppm occurred during ice ages and high concentrations 300 ppm during the warmer interglacial periods we are currently heading for unknown territories over 400ppm
Totally disagree.
Where is this "Thermal Blanket" - have you ever seen anyone using a gas as a "Thermal Blanket" ? The analogy is appalling.
Most radiation passes straight through the atmosphere in both directions at the speed of light. Most energy is absorbed at the Earths surface with Clouds being the only major absorber/refractor/shading of energy in the atmosphere.
I saw a picture on this forum of someone using a Thermometer on a grassfield in a post and that demonstrated IMHO exactly what is going on. The grass was about 20 degrees but the mud road alongside the grass was in the high 30s. For man made materials in Cities & Towns, roads & rail the temperature would be far more significant. This summer I was unable to touch concrete it was that hot, yet the grass alongside was cool.
Further, when you consider that humans pump water from beneath the Earth mainly for drinking and irrigation - then that will further create larger difference due the lack of vegetation and the lowering of the water table. This would be most pronounced in arid regions such as the Middle East, California etc.
CO2 doesn't insulate anything - if CO2 was an insulator when you applied it to a fire there would be an initial significant increase in heat within the fire.