[Einigkeit_Recht_Freiheit]

Correct me if I am wrong, but isn't he simply confirming the thesis that CO2 leads to warmer temperatures?

If that is the case, then the burning of fossils fuels, which clearly lead to the release of large amounts of CO2 would be raising temperatures and therefore support theories of anthropgenic climate change.

Obviusly it has occurred for natural reasons in the past, but there is nothing in the article judgmental one way or the other about the cause of the increase in CO2. Or am I missing something?

[Camel Joe]

Less than one tenth of one percent, or .001, is not a significant amount of CO2 scientifically, and is all that mankind can be accused of creating.

[RightWhale]

simply confirming the thesis that CO2 leads to warmer temperatures

The order appears to be the other way. Increased temperature produced increased partial pressure CO2. Somebody can produce a chart of data from cores.

[cogitator]

From the article: A popular predictor of future climate sensitivity is the change in global temperature produced by each doubling of CO2 in the atmosphere.

An article like this supports climate sensitivity to anthropogenic CO2 increases, which has been estimated by several other methods (with appropriate error bars). The range is 1.5 to 4.5 C in the IPCC. 3C lands right in the middle.