Well, I should clarify that in terms of geological time the "large magnitude swings" I was thinking of when I wrote that are still very high frequency. I was t

Well, I should clarify that in terms of geological time the "large magnitude swings" I was thinking of when I wrote that are still very high frequency. I was thinking in terms of large temperature fluctuations over periods of days, weeks, months, like the ones experienced during when the polar vortex destabilizes and floats around the northern hemisphere.