Feb 5, 2013

Using data to attribute episodes of warming and cooling in instrumental records

Ka-Kit Tung, Jiansong Zhou
Proceedings of the National Academy of Sciences
  • Finds that the underlying net anthropogenic warming rate in the industrial era is found to have been steady since 1910 at 0.07–0.08 °C/decade, with superimposed AMO-related ups and downs that included the early 20th century warming, the cooling of the 1960s and 1970s, the accelerated warming of the 1980s and 1990s, and the recent slowing of the warming rates
  • Finds that, quantitatively, the recurrent multidecadal internal variability, often underestimated in attribution studies, accounts for 40% of the observed recent 50-y warming trend