Nature Clim. Change 3, 520–524 (2013); published online 10 February 2013; corrected after print 20 June 2013.

In the version of this Article originally published, in the 'Atmospheric versus emission trends' section, the second sentence of the third paragraph should have started “An underestimate of FF+LUC, and/or decreased atmospheric sinks...” This error has now been corrected in the HTML and PDF versions.