This is a very troublesome article that just came out
"Evidence of a tidal effect on the Polar Jet Stream" http://CliveBest.com/blog/?p=7278
> "The Spearman correlation coefficient calculated between all values of DA/DT and T(45) evaluates to 2.4%, which although small still deviates from zero (no correlation) by 3.7 $\sigma$ equating to a statistical significance of >99.7%."
Based on my experience, would I think twice of trying to convince someone that a cc of 0.024 was significant? Looking at the time series, I could generate countless red or white noise trials that would work as well.
Clive Best is an AGW skeptic, but one of the smarter guys blogging on science topics so am of mixed mind on this particular research.