Just a quick note prompted by the comments: we’ve slipped below 2008 and are heading below 2006. A long way short of 2007 at the moment. Still all to play for.
[Update: as PH points out, 2009 is now not exciting at all, having rejoined “the pack”, albeit at the bottom edge. 2007 still looks very much like an outlier. Meanwhile, the July ARCUS report is out. Nothing very exciting there I think. I notice that they still persist in nonsense like “All estimates are well below the 1979-2007 September climatological mean value of 6.7 million square kilometers” – this is nonsense not because it is wrong, but because it is the bleedin’ obvious. No-one believes a return to the long-term average is going to happen. The correct “null hypothesis” is a return to the 1979-2007 (or 6) *trend* -W]