Elsewhere Jan said:
> "This is about decision making and statistics, signal detection theory, and all that, responding (finally) to the comment here. "

A couple of months ago I had an exchange with noteworthy climate scientist Michael Mann about the signal detection algorithm that we applied to ENSO

https://twitter.com/MichaelEMann/status/1179147055924731906

He seemed to assume that this was nothing new and concluded *"There are a million things you can do w/ spectral estimation. Some of them are instructive, others not so much. We choose our battles. Godspeed..."*

Bottomline, I think that there's a world of mathematical analyses applicable to climate and earth sciences that has remained unexplored. Physics too.