''The AMO was in a warm phase from the 1920s to the 1960s, a cold phase from 1970s to the early 1990s, and then changed back to a warm phase in the mid-1990s. Although the index remains in the warm phase at present, it shows a slight decrease in the past 5 years, with the index dropping below average more frequently than in the decade 2000 - 2010.''
https://www.woodfortrees.org/plot/uah6/ ... 2015/trend
Atlantic Multidecadal Oscillation index calculated by NOAA’s Earth System Research Laboratory
(http://www.esrl.noaa.gov/psd/data/climateindices)
https://www.aoml.noaa.gov/ocd/ocdweb/ES ... A/amo.html
