Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA home page National Weather Service   NWS logo - Click to go to the NWS home page
Climate Prediction Center

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

The standardized seasonal mean AO index during cold season (blue line) is constructed by averaging the monthly AO 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.


NOAA/ National Weather Service
National Centers for Environmental Prediction
Climate Prediction Center
5830 University Research Court
College Park, Maryland 20740
Page Author: Climate Prediction Center Internet Team
Page last modified: December 12, 2005
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities