How can the same data be shown on both of these graphs? The temperature is shown on one graph and the change in temperature is on another. Does one graph hide the Global Climate Change, and the other exaggerate it?
Retired chemist and physicist C.R. Dickson points out that the large error rates in global climate measuring combined with the very tiny increases shown make for very shaky conclusions. We’re simply not measuring the temperature well enough to trust an increase of a degree or two.
Because it’s so difficult to observe man-made global warming, some experts at NASA GISS believe the accuracy of climate models requires a one hundredfold increase in order to see the small amount of warming.
“A doubling in atmospheric carbon dioxide (CO2), predicted to take place in the next 50 to 100 years, is expected to change the radiation balance at the surface by only about 2 percent. If a 2 percent change is that important, then a climate model to be useful must be accurate to something like 0.25%. Thus today’s models must be improved by about a hundredfold in accuracy, a very challenging task.”
Thermometers were invented in the early 1700’s, by the way. Everything before then is an estimate. There have been five ice ages in earth’s history, and the Wikipedia article indicates that outside these ice events, the earth is ice free even at higher latitudes.
It is almost as if the actual temperature of the earth has been changing for millions of years, and that with today’s measurement techniques, we can’t figure out how warm the earth is with precision.