As mentioned previously, there was a major climate science conference in Copenhagen this past March. The conferences included 1,400 scientific presentations delivered to 2,500 participants from 80 countries. Now, a synthesis report (PDF) has been publicly released. Some of the key aspects have also been summarized on RealClimate.
The report reinforces the point that warming of more than 2ºC would be dangerous, arguing that such change “will be difficult for contemporary societies to cope with, and are likely to cause major societal and environmental disruptions through the rest of the century and beyond.” The report also concludes that strong and immediate action could still prevent the 2ºC threshold from being crossed. There is even scope for temporarily overshooting the target, then pulling back as the impact of greenhouse gas emissions works its way through the climatic system.
Even though the changes needed to stop the present course of climate change are great, it is relieving to read that there we have not fully doomed ourselves.