Den stora tråden om global uppvärmning/växthuseffekten

There was increased public interest in 2013 in the run-up to publication of the IPCC Fifth Assessment Report, and despite concerns that a 15-year period was too short to determine a meaningful trend, the IPCC included a section on a hiatus,[10] which it defined as a much smaller increasing linear trend over the 15 years from 1998 to 2012,...
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Research reported in July 2015 on an updated NOAA dataset[1][3] casts doubt on the existence of a hiatus, and it finds no indication of a slowdown even in earlier years.[12][13][14][15] Scientists working on other datasets welcomed this study, though they have expressed the view that the recent warming trend was less than in previous periods of the same length.[16][17] Subsequently, a detailed study supports the conclusion that warming is continuing, but it also find there was less warming between 2001 and 2010 than climate models had predicted, and that this slowdown might be attributed to short-term variations in the Pacific decadal oscillation (PDO), which was negative during that period.[18][19][20] Another review finds "no substantive evidence" of a pause in global warming.[21][22] A statistical study of global temperature data since 1970 concludes that the term 'hiatus' or 'pause' is not justified .[23]