Copenhagen: leaked UN report points to 3C rise
16 Dec 2009:
A confidential UN analysis obtained by the Guardian reveals the emissions cuts offered so far at the Copenhagen climate change summit will lead to global temperatures rising by an average of 3C.
The analysis seriously undermines the statements by governments that they are aiming to limit emissions to a level ensuring no more than a 2C temperature rise over the next century, and indicates that the last 24 hours of negotiations will be extremely challenging.
A rise of 3C would mean:
up to 170 million more people suffering severe coastal floods
and 550 million more at risk of hunger,
according to the 2006 Stern economic review of climate change for the UK government —as well as leaving
up to 50% of species facing extinction.
Even a rise of 2C would lead to sharp decline in tropical crop yields, more flooding and droughts.
The paper was drafted by the UN secretariat running the Copenhagen summit.
“Unless the remaining gap of around 1.9-4.2Gt is closed and Annexe 1 parties [countries] commit themselves to strong action before and after 2020, global emissions will remain on an unsustainable pathway that could lead to concentrations equal or above 550 parts per million, with the related temperature rise around 3C,” it says.
The goal of keeping the increase in global average temperatures below 2C, relative to pre-industrial levels, has become the figure that all rich countries have committed to trying to achieve in Copenhagen.
Greenpeace campaigner Joss Garman said: “This is an explosive document that shows the numbers on the table at the moment would lead to nothing less than climate breakdown and an extraordinarily dangerous situation for humanity. The UN is admitting in private that the pledges made by world leaders would lead to a 3C rise in temperatures.
The science shows that could lead to the collapse of the Amazon rainforest, crippling water shortages across South America and Australia and the near—extinction of tropical coral reefs, and that’s just the start of it.”
The biggest remaining obstacles that remain are who pays for the fight against climate change and how much, emissions cuts and how promises of cuts are verified. Earlier, US secretary of state, Hillary Clinton, pushed the negotiations forward by committing the US to contribute to a $100bn a year fund from 2020. Indonesia yesterday followed China’s lead in softening its opposition to international monitoring of carbon cuts.
Earlier this week, Rajendra Pachauri, who heads the UN’s Intergovernmental Panel on Climate Change (IPCC), told the Guardian that even with 1.5C rises, many communities would suffer.
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