If you were to take the sum “knowledge” of global warming skeptics and distill it into a short, quasi-readable manifesto, you’d end up with something like Joanne Nova’s “The Skeptics Handbook.”
For someone who claims to have been a “veteran believer in greenhouse gases from 1990 – 2007,” Nova sure has a way of rehashing a lot of the same old tired arguments that climate scientists have been shooting down for years – particularly her central point that there is no evidence to link rising carbon dioxide emissions to higher temperatures (more on that later).
Perhaps the most odious aspect of this handbook is that it seems to be aimed squarely at a younger audience – what with its dumbing down of the science and constant repetition of the same flawed arguments. Having failed to gain ground with the adults, the skeptics are presumably turning to the younger generations now to carry their water.
While I’d encourage anyone who wants a substantive discussion of the science behind climate change to go consult the experts (actual scientists like the Real Climate blogger team, for example) – a revolutionary concept, I know – I’ll do my best to debunk some of Nova’s most egregious arguments over the next few days. I’ll get things started today with her “bottom line”: that adding more CO2 to the atmosphere does not cause global warming.
The easiest way to dismiss this point, as Grist contributor and Texas A&M University Professor Andrew Dessler noted, is to look at Venus’ atmosphere. Though it shares several features in common with our planet – hence its sometimes being called Earth’s “sister planet” – it differs in one crucial aspect: the amount of CO2 in its atmosphere.