Maybe not...
http://thinkprogress.org/climate/2012/08/04/640391/must-read-hansen-climate-change-is-here-and-worse-than-we-thought/
As at June 2012, the US Department of Energy Carbon Dioxide Information Analysis Centre (CDIAC) advises that the present level of atmospheric CO2 amounts to 395.7 ppmv. The figures set out above suggest that by 2035, atmospheric CO2 will amount to 589 ppmv., and a commitment to an associated equilibrium temperature increase of 3.06˚C over pre-industrial values. A simple extrapolation to 2035 of the Mauna Loa data from 1958 to 2012 (f(x)=0.122×2 + 0.7867x + 313) would predict 449.9 ppmv, and an associated equilibrium temperature increase of 1.8˚C. by that date: it is abundantly clear that a much more dangerous track is now in view.
Given that we are seeing at 0.8˚C the changes originally projected for +2˚, what will the changes associated with +1.8˚ be like? Something like what we're projecting for 3-4˚?
According to Mark Lynas:
http://www.guardian.co.uk/books/2007/apr/23/scienceandnature.climatechange
Three degrees alone would see increasing areas of the planet being rendered essentially uninhabitable by drought and heat. In southern Africa, a huge expanse centred on Botswana could see a remobilisation of old sand dunes, much as is projected to happen earlier in the US west. This would wipe out agriculture and drive tens of millions of climate refugees out of the area. The same situation could also occur in Australia, where most of the continent will now fall outside the belts of regular rainfall.
With extreme weather continuing to bite - hurricanes may increase in power by half a category above today's top-level Category Five - world food supplies will be critically endangered. This could mean hundreds of millions - or even billions - of refugees moving out from areas of famine and drought in the sub-tropics towards the mid-latitudes. In Pakistan, for example, food supplies will crash as the waters of the Indus decline to a trickle because of the melting of the Karakoram glaciers that form the river's source. Conflicts may erupt with neighbouring India over water use from dams on Indus tributaries that cross the border.
At four degrees another tipping point is almost certain to be crossed; indeed, it could happen much earlier. (This reinforces the determination of many environmental groups, and indeed the entire EU, to bring us in within the two degrees target.) This moment comes as the hundreds of billions of tonnes of carbon locked up in Arctic permafrost - particularly in Siberia - enter the melt zone, releasing globally warming methane and carbon dioxide in immense quantities. No one knows how rapidly this might happen, or what its effect might be on global temperatures, but this scientific uncertainty is surely cause for concern and not complacency. The whole Arctic Ocean ice cap will also disappear, leaving the North Pole as open water for the first time in at least three million years. Extinction for polar bears and other ice-dependent species will now be a certainty.
If we end up with these kinds of changes within 30 years, God help us all. And if we end up with +3˚, not even God Herself will be able to help.
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