arctic.oscillations {UsingR} | R Documentation

## Measurement of sea-level pressure at the arctic

### Description

A monthly time series from January 1899 to June 2002 of sea-level pressure measurements relative to some baseline.

### Usage

    data(arctic.oscillations)

### Format

The format is: chr "arctic.oscillations"

### Details

See http://jisao.washington.edu/ao/ for more details on the importance of this time series.

### Source

The data came from the file AO_TREN_NCEP_Jan1899Current.ascii found at http://www.atmos.colostate.edu/ao/Data/ao_index.html.

### Examples

    data(arctic.oscillations)
    x = ts(arctic.oscillations, start=c(1899,1), frequency=12)
    plot(x)

[Package UsingR version 0.1-4 Index]