McCain and climate – trouble ahead
John McCain’s out on the campaign trail today promoting his green credentials, but its clear that his climate change proposals would put a McCain administration on collision course with many, maybe most, of its international partners.
Here’s McCain’s headline promise on climate:
By the year 2012, we will seek a return to 2005 levels of emission, by 2020, a return to 1990 levels, and so on until we have achieved at least a reduction of sixty percent below 1990 levels by the year 2050.
At first glance, this sounds pretty compatible with the ranges that the Kyoto countries (almost all countries bar the US) agreed to be ‘guided by’ in their side negotiation at Bali. Following the lead of the IPCC, these countries said that:
Global emissions of greenhouse gases (GHGs) need to peak in the next 10-15 years and be reduced to very low levels, well below half of levels in 2000 by the middle of the twenty-first century.
McCain’s 60% by 2050 is ‘well below half’ of course (especially when you note the different baseline). But that fails to take into account how Americans emit at the moment. The US will have to cut much further and faster than McCain realises, if we are going to hit the global target.
Breaking out emissions on a per capita basis shows why:
- According to Nick Stern (pdf), per capita emissions will need to be around 2-2.5 tonnes gigatons CO2e by 2050, based on a population of 9 billion people.
- The US government’s own stats, however, show that its per capita emissions were around 24 tonnes gigatons in 2006 (based on a population of 300 million).
- McCain’s 60% reduction would take them down to just under 6 tonnes gigatons, based on a population that had grown to 420 million people (and obviously higher if population growth is less rapid.
In other words, the US would still be two to three times above the global average in 2050. By mid-century, under McCain’s plan, its per capita emissions would be higher than China’s – at around 5 tonnes gigatons – are today! (more…)