On Sunday 2 November, the IPCC published its Synthesis Report. This report summarises the Fifth Assessment Report, which was produced by working groups of over 800 scientists and is intended as a guidance document for policymakers.
The report is split into four sections or topics. Topic 1, ‘Observed Changes and their Causes’, outlines the evidence for a changing climate and the impacts of this change. The report states that ‘[w]arming of the climate system is unequivocal’ and that this change can be seen in the fact that the ‘atmosphere and ocean have warmed, the amounts of snow and ice have diminished, and sea level has risen.’ This section of the report also looks at the man made contributions to climate change and states that ‘[h]uman influence on the climate system is clear, and recent anthropogenic emissions of greenhouse gases are the highest in history.’