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HOME > Climate & Weather Linkage > Teleconnections > North Atlantic Oscillation > Observation of Seasonal (JFM) mean North Atlantic Oscillation
 
 
Seasonal mean (January-February-March) North Atlantic Oscillation index. Click image to enlarge.
(Click on image to enlarge)
 

The standardized seasonal mean NAO index during cold season (blue line) is constructed by averaging the monthly NAO index for January, February and March for each year. The black line denotes the standardized five-year running mean of the index. Both curves are standardized using 1950-2000 base period statistics.


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Page last modified: December 12, 2005
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