A majority of the world’s nations yesterday signed up to the Copenhagen Accord and filed plans for emissions reductions, scraping over the UN deadline of 31st January for doing so. But the pledged actions fall far short of action needed to prevent global temperatures rising by 2 degrees C – the target adopted in the text of the Accord itself.
Instead, existing actions set the world on course for a 3.5 degrees Celsius temperature rise, according to earlier analysis of pledges carried out by consultancy Ecofys. PriceWaterhouseCoopers calculate that on current projections the world will burn up its allocated carbon budget for the first half of the century by 2034 – 16 years ahead of schedule.
Following the announcement of the Copenhagen Accord, John Sauven, executive director of Greenpeace UK, declared Copenhagen “a crime scene”, with the world leaders who brokered the deal “guilty men and women.” Every crime scene demands a post-mortem, and in this entry, I’ll attempt to file a first report. I’ll warn you now: some scenes may disturb.
Keep an eye on the Climate Scoreboard during the next two weeks… Note the dark blue curve in the graphic, this is the probability distribution, it shows the full range of temperature rise the current national emissions proposals would likely give rise to. Currently it’s 2-6 degrees with 3.8 degrees is the most likely outcome (according to their analysis, climate sensitivity etc.).
With my risk managers hat on, it’s hard not to notice that we could go way above 3.8 degrees… it looks like there’s a 5-10% of going over 5 degrees… the sting’s in the tail as they say!
