The BBC reported yesterday on a report published by the United Nations Environment Programme (UNEP), which points out that the pledges made by countries to curb emissions (even if fulfilled) are not enough to prevent a likely global mean temperature rise by around 4 degrees C this century.
The UNEP report mentions the promises made at Copenhagen (some of which deal with targets for 2020) and freely admits that projection beyond 2020 is inexact, however the report seems to conclude that the pledges made do not seem consistent with the stated aim of limiting temperature rise to between 1.5-2.0 degrees C.
Given the conditional nature of the pledges by some nations, depending on their ability to enact the required legislation. and the necessity (sometimes notably lacking) for real political will to act on this issue then I believe the outlook is not all roses.
It is imperative that, in the short window we have, we act personally and also force our politicians to act on this at Cancun.