In September, the IPCC kicked off its cycle for the Fifth Assessment Report with the release of its look at the physical science, aka the Working Group I report.  I just wanted to bring to your attention the fact that they’ve now issued the finalized Summary for Policymakers (SPM) with all of its graphics.  This had been held up in the pipeline as final edits and review were performed.  It is a document well worth reading.  In fact, if you want to have the most thorough and, at the same, most easily readable overview of what the scientists have been seeing, then this is what you should read.  You can find the SPM here.

You can also find the graphics here.  I find the one below particularly illuminating.  It gives you an in-depth perspective on the greenhouse gases that are causing so much of the trouble, including some that have not been given as much attention as they warrant, like black carbon and ozone.  (See pp. 11-12 of the SPM for a fuller explanation of how this graphic should be read.  See also this characteristically excellent history of radiative forcing charts from RealClimate.)