Is the volatility and non-stationarity of the Atlantic Multidecadal Oscillation (AMO) changing?

Is the volatility and non-stationarity of the Atlantic Multidecadal Oscillation (AMO) changing?
-

doi
10.1016/j.gloplacha.2020.103160
Article type
Journal
https://people.iut.ac.ir/en/beyraghdar/content/1607347