The southern oscillation is defined as the barametric pressure
difference between Tahiti and the Darwin Islands at sea level. The
southern oscillation is a predictor of el nino which in turn is
thought to be a driver of world-wide weather. Specifically, repeated
southern oscillation values less than -1 typically defines an el nino.
Usage
data(southernosc)
Arguments
Format
The format is:
Time-Series [1:456] from 1952 to 1990: -0.7 1.3 0.1 -0.9 0.8 1.6 1.7 1.4 1.4 1.5 ...
References
A description was available at
http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc4461.htm