Comment by dmix
8 years ago
What kind of time scales does this suggest?
> A study based on a coupled climate–carbon cycle model (GCM) assessed a 1000-fold (from <1 to 1000 ppmv) methane increase - within a single pulse, from methane hydrates (based on carbon amount estimates for the PETM, with ~2000 GtC), and concluded it would increase atmospheric temperatures by >6 °C within 80 years
Am I reading this right that it would take 80yrs to get to +6c, so it would still be a gradual increase? Is it an exponential increase?
Anyone recommend a documentary about this?
For what it's worth, +1.5c is deemed bad and +2c is deemed abominably abhorrent; if the midpoint is +3c in 40y, that's bad, but if the majority of the temp growth is in the latter half (ie it's monotone but convex), that would be a damn crunch imo