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Timmah! on 16 June 2007
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Yulegoat said:
z64dan said:

But here's the facts:

2500 scientists each agreed that one part of the IPCC report was correct. They did not all agree on the entire report, they were just 2500 contributors. Kinda misleading.

Yeah, but there's no denying that the part dealing with climate sensitivity is based on the views of majority of the climatologists. The IPCC in fact doesn't do any research of its own, it just gathers together the information from recent peer-reviewed studies.
z64dan said:

Evidence has been mounting that the earth is getting warmer. However, evidence has NOT been mounting that this is A) Abnormal compared to medieval warm period,

Again, the climate was warmer in Europe around 1000 AD, but the natural forcings alone do NOT explain the observed global change in climate. Here's a pic to show what I mean:


There's something very obvious I would like to point out about this graph. Greenhouse gasses and temperature don't match up like they should for human-caused global warming to be true. The overall temperature increase on this graph has occurred begins around 1910. The MAJORITY of the warmup (about 2/3 of the total change since 1910) happened between 1910 and 1940, during which time greenhouse gasses were almost completely flat. From the period of 1940 to 1980 we see the largest rise of greenhouse gasses and no rise in temperature at all. From 1980 to the present, we see greenhouse gasses continue to rise while temperature rises.

 If greenhouse gasses were truly the primary cause for the current warmup we should see them track very closely with the temperature. Temperature and CO2 from 1910 to 1940 should BOTH Rise, only temperature does. From 1940 to 1980 Temperature and greenhouse gasses should both be flat, but temperature stays flat while greenhouse gasses rise. The data does not provide a strong enough correlation between greenhouse gasses and temperature to support the theory that man-made greenhouse gasses (which actually make up a very small percentage of total greenhouse gasses released by volcanos, decaying leaves, animals, etc.) are CAUSING global warming.

Even if the correlation between CO2 and temperature were stronger, science does not allow correlation of data to prove causation. http://en.wikipedia.org/wiki/Correlation_does_not_imply_causation Correlation can only SUGGEST, or make it more likely that one factor causes another. This means that the 'scientists' that say human caused global warming is a fact are abandoning the first rule of the science they are using to prove it. Human caused global warming is a THEORY in every sense of the word.