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Originally Posted by Gumshoe-Mystery
I'm sorry but the findings of this report are just not true. Firstly the mechanism for 'greenhouse warming' is simple and thermodynamically sound. Electromagnetic radiation enters the atmosphere. Some is reflected back into space, the rest is absorbed and turned into heat energy. Some things are simply better absorbers of heat, while other things, such as polar ice, better reflecters. I haven't studied the absorption characteristics of carbon dioxide since I was at school, but there's nothing fancy here, it's basic stuff.
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So the science is NOT settled. Some people think one way and some people think another way. Just because the mechanism makes sense on paper doesn't translate to the real world. Too many variables for our puny minds to handle. If we could have models to predict how things interact on a planetary scale, we would be far more accurate at predicting local weather patterns. As of now, our record is probably 50/50 on weather prediction.
Quote:
Originally Posted by Gumshoe-Mystery
As far as measuring average temperatures there's many ways this could be done. I don't know precisely how quoted temperatures are being validated, but it's not rocket science. Not only that there are many means of cross-correlating readings. Finally, you must surely be aware of the retreat of polar ice in the last 50 years, and if it's not rising temperature thats doing that then atmospheric pressure must be increasing at an enormously worrying rate!
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Quoted temperature are measured from weather stations, at least in the US.
Here's the problem, those weather stations are located near heat islands, like a big city. Some instrumentation at those weather stations were improperly placed, like next to an air conditioner or at a corner of a building or on top of a black top parking lot. Those readings will tend to be higher than the true temperature.
Some weather stations have correct instrumentation. For example, the one in Albany, NY, the oldest continuous operating weather station in the US, reported the average temperature in a recent year (forgot which) the same as the year it became operational, nearly 200 years ago. But you'll never hear this from Rev. Al and the Global Warming Cult. They still believe 5 of the hottest years in the last century were in the 2000's. In fact, 1930s were far warmer than what we are right now.