This still fails to explain why CO2 levels were higher in the first half of the 20th century, but overall temeperatures were cooler during the same period. I don't believe that they can correlate the data between CO2 and global temperature levels.
In addition, the average temperature rise of .36 degrees F per decade for the last 30 years is also untrue. Satellite temperature measurements have consistently shown the total temperature rise for the last galf of the 20th century was only .1 degrees F.
This article is simply riddled with misinformation and mis-statements.
(Uh-oh, here it comes!)
I prefer the nutballs who say "global warming" is caused by methane from cow farts. These are the same lunatics who get tears in their eyes talking about how the plains were black with buffalo before whitey came along and killed them all for their hides. Nope, no disconnect with logic there.
The reason for slightly cooler mid-century temps is natural variability and some contribution of sulfur aerosol blocking. The climate response in increasing atmospheric greenhouse gases is not expected to be linear; given that virtually everyone, skeptic or non-, will state that climate is a complex system, I fail to understand why there's an expectation of a simple correlation between increasing atmospheric CO2 and higher temperatures!
Curious points: one, the satellite temps start in 1979, so they don't cover the last "half" of the century; two, the minimum trend of three separate analyses is now about 0.13 C per decade (the other analyses are at about 0.2 C per decade); three, the 0.36 F figure is for the surface, and the satellites measure the temperature of the lower troposphere (and also the middle, troposphere+mesosphere, and also the stratosphere).