By request here is the «spaghetti plot» of multiple mainstream global temperature time series. (junksciencearchive.com)
Positive ENSO trend is, just like the various global temperature time series, a representation of climate change. (judithcurry.com)
However, the primary modes of interest are those having timescales 60 - 70 + years, which is comparable to the time scale of the main features of the 20th century global temperature time series. (judithcurry.com)