You know how deniers are likely to write along the lines of: Global warming isn't happening or if it is it's not us or if it is us it's good. Well, here's a near-perfect example taken from WUWT today. Allan MacRae and Kim are replying to wickedwenchfan:
wickedwenchfan April 20, 2015 at 12:18 am
Who cares what is causing the CO2 amount to rise? It doesn’t do squat to alter temperature so it’s irrelevant
Allan MacRae April 20, 2015 at 12:43 am
kim April 20, 2015 at 12:53 am
Well, if it does, it alters it to the beneficial side, so it’s all good. Relax, and roll with the punches, er, uh, adapt.
Here's what's happened with CO2 over the past several hundred millenia - 800,000 years or so:
|Adapted from data from data at NOAA. Original reference: Luthi, D., M. Le Floch, B. Bereiter, T. Blunier, J.-M. Barnola, U. Siegenthaler, D. Raynaud, J. Jouzel, H. Fischer, K. Kawamura, and T.F. Stocker. 2008. High-resolution carbon dioxide concentration record 650,000-800,000 years before present. Nature, Vol. 453, pp. 379-382, 15 May 2008. doi:10.1038/nature06949|
This is what's been happening to the surface temperature as we keep adding CO2 to the air.
|Data source: GISS NASA|