Artic Oscillation data based on SAT data
A time series of January, February, and March measurements of the annular modes from January 1851 to March 1997.
data(aosat)
The format is: first column is date in years with fraction to indicate month. The second column is the measurement.
This site http://jisao.washington.edu/ao/ had more details on the importance of this time series.
This data came from the file AO\_SATindex\_JFM\_Jan1851March1997.ascii at http://www.atmos.colostate.edu/ao/Data/ao\_index.html
data(aosat) ## Not run: library(zoo) z = zoo(aosat[,2], order.by=aosat[,1]) plot(z) ## yearly plot(aggregate(z, floor(index(z)), mean)) ## decade-long means plot(aggregate(z, 10*floor(index(z)/10), mean)) ## End(Not run)
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