In yesterday’s post, I observed that Nature’s recent news article on Met Office decadal forecasts failed to show the most recent Met Office decadal forecast and that its inclusion would not have permitted the Nature headline. I also showed the large change from the Met Office submission to IPCC AR5 and their current decadal forecast. Asked to comment by Anthony Watts, Richard Betts of the Met Office did not explain why the Met Office either signed off on or had not objected to the omission of their most recent forecast. Instead, Betts claimed that my plot was “wrong” because “HadGEM2 not an initialised forecast, so Steve is wrong to plot it from 2010 high point – exaggerates difference”… as though this were responsive:
However, I had directly plotted from data from the Met Office so there was no inaccuracy in my graphic despite Betts’ implication. Nor, needless to say, there is no scientific or statistical principle forbidding the illustration of initialized and uninitialized forecasts on the same graphic. Ironically, as shown below, the UK Met Office had themselves done so in the very article (Smith et al 2012 Clim Dyn) from which the Nature News article had been derived.