The numbers are just in. At a time when we need to be urgently reducing our CO₂ emissions, we are now emitting more than at any time in human history. However, it’s not too late to turn things around.
Last year we examined the 2010 annual fossil fuel CO₂ emissions report from the
International Energy Agency (IEA). The news was
not good – 2010 saw the largest single-year increase in these emissions, growing 1.6 billion tonnes (gigatonnes [Gt]) from 2009, to 30.6 Gt (the previous record annual increase was 1.2 Gt). Energy intensity (the ratio of primary energy use to Gross Domestic Product) rose in 2010 for the first time since 1990, possibly because of relatively subdued fossil fuel prices and economic stimulus funding for construction projects. For these reasons, the 2010 CO₂ emissions growth
may not be repeated. The
2011 IEA estimate is now out, and includes some good news and some bad news. In 2011, global fossil fuel CO₂ emissions set yet another record, increasing a further 1.0 Gt to 31.6 Gt (see figure 1). Last year, we emitted more CO₂ into the atmosphere than any time in human history. However, in a valiant effort to take a glass-half-full approach, we can point out that the increase was smaller than in 2010,
as expected, and only the fourth-largest annual emissions increase on record.