 There has been considerable variability at shorter interannual to decadal periods, with hiatus periods showing less certain short-term trends.The 1998–2012 hiatus shows a rise of 0.05 [–0.05 to +0.15] °C per decade, compared with a longer term rise of 0.12 [0.08 to 0.14] °C per decade over the period from 1951 to 2012.The appearance of hiatus is sensitive to the start and end years chosen