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HOME > Climate & Weather Linkage > Teleconnections > Antarctic Oscillation > Daily Geopotential Height Anomalies
Vertical Cross section of Geopotential Height Anomalies  Banner
Vertical Cross section of Geopotential Height Anomalies and AAO index. Click on image to enlarge.
(Click on image to enlarge)
The daily geopotential height anomalies at 14 pressure levels are shown for the previous 120 days as indicated, and they are normalized by standard deviation using 1979-2000 base period. The anomalies are calculated by subtracting 1979-2000 daily climatology, and then averaged over the polar cap poleward of 65°S.

The blue (red) colors represent a strong (weak) polar vortex. The black solid lines show the zero anomalies.

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Page Author: Climate Prediction Center Internet Team
Page last modified: December 12, 2005
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