Are Humans Going Extinct?

[AverageJoe90]

55. *Sigh*.....you have GOT to be kidding me.

The hyperbolic title was bad enough, but quoting Guy McPherson, of all sources, who is honestly as much of an extremist doomer as his opposite number, Steven Goddard, is a denialist? Are you *serious*, Dahr Jamail?.

Folks, let me point this out: It's now 2014. Global temperatures, though they are still rising overall, have seen a significant slowing in the warming, for almost 20 years now, and Co2 is now at around 400 ppm.

Now, let's think about this: We are only 36 years away from the cutoff date of 2050, and the rate predicted by McPherson, et al. here is 6*C by 2050, and let us assume that they also believe that this, too, may double, leading to 12*C by 2086 or thereabouts. Let us also assume, that the worst-case scenario of Co2 increase is about 1000 ppm, almost two doublings worth, by 2100. Doing the most basic math, it leads us to a climate sensitivity of an incredible seven degrees(rough estimate) per doubling, almost twice even the most pessimistic plausible estimates by any of those organizations with actual experience in the field. So, basically, McPherson's pulling shit out of his ass, and makes me wonder if he's been relying on David Wasdell's fringe "Earth Systems" pseudoscience again.

And McPherson even has the nerve to basically put a message of joy at the bottom of all that.....that honestly, *irks* me to a great extent. What a fuckin' messed up nutter this guy is.