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- Dec 22, 2012
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the problem is determining what an actual global temperature change is, and will be when it happens.What is inevitable, is that the climate will change, but there are real limits to how much it can change.
We know the energy reaching the surface is back up to roughly the 1950's level, but the
Sun has decreased it's output some since 1958. One more degree C might be possible, but more likely less than that.
Almost all the monitoring stations used are influence by land use changes, and it is impossible to correct that out of them with any usable, precision. Most these land use change are the Urban Heat Island Effect which can increase the daily average by as much as 10 C (18 F) over the natural terrain.