Timeseries Extraction Information
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Extract Daily Timeseries
Help and Background
Instructions
Related Time Series Analysis Pages
Extract Monthly Timeseries
Plot and analyze monthly time series
Plot daily gridded composites
Data Documentation
NCAP/NCAR Reanalysis
20th Century Reanalysis
Daily Index time series
 

North Atlantic Oscillation (NAO)

Description:
Pattern of variability in the North Atlantic.
Image:

Postive Phase:

Calculation Method:
The indices are based on centers-of-action of 500mb height patterns. These time series utilize the NCEP/NCAR R1 dataset. The region 55-70N;70W-10W is subtracted from 35-45N; 70W-10W.
Time Interval: Daily
Time Coverage: 1948-2010
Update Status: irregular
Get Data:
NAO Timeseries
Source:
Data is from NOAA/ESRL PSD
References/Info:
Daily Teleconnections Forecasts including PNA Forecast plot
Monthly NAO (different source)
NOAA/CPC's NAO Information