Almost nine out of 10 climate scientists do not believe political efforts to restrict global warming to 2C will succeed, a Guardian poll reveals today. Time to get serious about adaptation, geoengineering, air capture and transformational innovation.
File this under "D" for "Depressing" and "G" for time to "Get Serious" about adaptation, geoengineering, biochar and air capture technologies and transformational clean energy innovation. Because if what these scientists say is true, we're going to need a healthy dose of each to mitigate and adapt to the warming likely to hit populations across the planet over the coming century and beyond.
According to a survey from the UK Guardian:
Almost nine out of 10 climate scientists do not believe political efforts to restrict global warming to 2C will succeed, a Guardian poll reveals today. An average rise of 4-5C by the end of this century is more likely, they say, given soaring carbon emissions and political constraints.
Such a change would disrupt food and water supplies, exterminate thousands of species of plants and animals and trigger massive sea level rises that would swamp the homes of hundreds of millions of people.
The poll of those who follow global warming most closely exposes a widening gulf between political rhetoric and scientific opinions on climate change. While policymakers and campaigners focus on the 2C target, 86% of the experts told the survey they did not think it would be achieved. A continued focus on an unrealistic 2C rise, which the EU defines as dangerous, could even undermine essential efforts to adapt to inevitable higher temperature rises in the coming decades, they warned.
The admittedly non-scientific poll was conducted by offering a chance to respond to all 1,756 people registered to attend the climate science conference in Copenhagen last month. According to the Guardian, 261 responded, including 200 researchers in climate science and related fields (others were industry, government or NGO reps attending the conference).
The poll asked the experts whether the 2C target could still be achieved, and whether they thought that it would be met: 60% of respondents argued that, in theory, it was still technically and economically possible to meet the target, which represents an average global warming of 2C since the industrial revolution. The world has already warmed by about 0.8C since then, and another 0.5C or so is inevitable over coming decades given past greenhouse gas emissions. But 39% said the 2C target was impossible.
The poll comes as UN negotiations to agree a new global treaty to regulate carbon pollution gather pace in advance of a key meeting in Copenhagen in December. Officials will try to agree a successor to the Kyoto protocol, the first phase of which expires in 2012. The 2C target is unlikely to feature in a new treaty, but most of the carbon cuts proposed for rich countries are based on it. Bob Watson, chief scientist to Defra, told the Guardian last year that the world needed to focus on the 2C target, but should also prepare for a possible 4C rise.
Asked what temperature rise was most likely, 84 of the 182 specialists (46%) who answered the question said it would reach 3-4C by the end of the century; 47 (26%) suggested a rise of 2-3C, while a handful said 6C or more. While 24 experts predicted a catastrophic rise of 4-5C, just 18 thought it would stay at 2C or under.
...Some said they thought geoengineering measures, such as seeding the ocean with iron to encourage plankton growth, would help meet the [2C] target.
Of course, none of this means it's time to give up and move to high ground (although for those living in low-lying areas of the world, the latter may be required soon). As Guardian writes:
Many of the experts stressed that an inability to hit the 2C target did not mean that efforts to tackle global warming should be abandoned, but that the emphasis is now on damage limitation.
