The state of the ocean climate
menu orig.php
OOPC
Clivar

Introduction | Overview | Atmosphere | Surface ocean | Subsurface ocean | Sea Ice
AO | NAO | PNA | PDO | SAM | SOI | AMO
shorter series | longer series

Arctic Oscillation (AO)

The AO index indicates the predominance of a characteristic pattern of atmospheric circulation over the Arctic. view pattern »

Data source and calculation

The index is calculated by NOAA/CPC (last update 15-MAY-2016). view details of calculation »

The standard deviation of the index over the period 1948-2005 is indicated on the plot. get series (netcdf 12kB) »

 

 OOPC Secretariat - IOC/UNESCO - 1 rue Miollis - 75732 Paris cedex 15 - France © 2005-6 IOC/UNESCO 
UNESCO IOC NCDC Coriolis