Jovial Monk wrote on May 2
nd, 2017 at 1:05pm:
Lees DID say 280==>410ppm was a 4% increase. This crap was also in a paper he cited which I had a look at and laughed.
But of course you have no proof of me saying it. Which I deny I did BTW. Of course with your comprehension skills, or lack of them, it may have said something entirely different.

"The chemist Svante Arrhenius went further in 1896 by estimating the impact of CO2 on the climate; after painstaking hand calculations he concluded that doubling its concentration might cause almost 6 degrees Celsius of warming—an answer not much out of line with recent, far more rigorous computations."
Actually it is far less. Look for Arhennius 1906 paper where he halved his assessment. And studies since this paper was published in 2009, have shown any warming to be much less. The IPCC has downgraded their estimates for doubling in AR5 to 2 - 4.5ºC. Back where it was in FAR.
Why do you rely on outdated papers?
"Claim 2: The alleged "hockey stick" graph of temperatures over the past 1,600 years has been disproved. It doesn't even acknowledge the existence of a "medieval warm period" around 1000 A.D. that was hotter than today is. Therefore, global warming is a myth."
"It is hard to know which is greater: contrarians' overstatement of the flaws in the historical temperature reconstruction from 1998 by Michael E. Mann and his colleagues, or the ultimate insignificance of their argument to the case for climate change.
First, there is not simply one hockey-stick reconstruction of historical temperatures using one set of proxy data. Similar evidence for sharply increasing temperatures over the past couple of centuries has turned up independently while looking at ice cores, tree rings and other proxies for direct measurements,"
Oh, No Michael E Mann and his infamous reconstruction, with its upside down, reversed Tiljander graph. Tree rings as proxies for temperature?

Ice cores that don't have the required certainty over centuries.
"other proxies for direct measurement" - Say what? Either it is a direct measurement or it is a proxy.