In case you haven't noticed, there are really two premises to this blog: one is that "historical" emissions of greenhouse gases -- those that have already happened -- have already taken us past a critical breakpoint in warming of the atmosphere (and acidification of the oceans); and two, that until we came along (and swelled our population) one of the major feedback -- and therefore control / mitigation -- loops of global temperature was carbon sequestration by plants. [More on this...]
Well, I nonetheless feel compelled to keep linking out to new studies and statements by credible scientists and policy wonks to back up the idea that simply cutting future emissions and making future energy supplies more efficient is not sufficient -- we need to take back some of the GHGs that have already been flung skyward or 10-20-30 years from now unpleasant surprises await.
So here you have it, today's dose: a Reuters report pulled from Yahoo wherein a number of ocean specialists lay it all for us again. We should shoot for 320 ppm, are already at more than 385 ppm and are headed -- in the most optimistic scenario for at least 450 ppm.
