Every day at 10pm, Metcheck checks the values at strategic places around the globe to view the values of the three main teleconnections.

NAO - North Atlantic Oscillation
AO - Arctic Oscillation
PNA - Pacific North America Pattern

You can check the latest recordings for the past three months on this page.

Teleconnection Data for :-

NAO - North Atlantic Oscillation

North Atlantic Oscillation teleconnection pattern. It can also be viewed as the Atlantic half of the AO (Arctic Oscillation) teleconnection pattern - strongly influences temperatures over europe and much of North America - especially during the cold seasons - and determines the mean latitude of the prevailing storm tracks across the North Atlantic. The phase of the NAO is considered positive when pressures and heights are below normal over Greenland and Iceland (strong icelandic low) and above normal at middle and subtropical latitudes (strong Bermuda-Azores high) - and negative for the reverse anomalies.

AO - Arctic Oscillation

A measure of the difference between the mean mid-tropospheric height or sea level pressure anomaly over the polar basin and the corresponding average anomaly in a ring surrounding the polar basin at middle latitudes. The AO is considered to be the leading mode of climate variability of the extratropical northern hemisphere. The AO can also be considered to include the NAO (North Atlantic Oscillation) with which it is positively correlated - but not identical. The phase of the AO is considered to be positive when heights or pressures are below normal over the arctic basin and above normal over surrounding mid- latitudes - and is negative for the reverse anomaly pattern.

PNA - Pacific/North American Teleconnection Pattern

Variability in atmospheric pressure over the Northern Pacific and North America is associated with variability in rainfall in the southwestern United States. Wetter summers are associated with PNA phases with strong North to South pressure gradients. Drier summers have tended to follow PNA phases with weak North to South pressure gradients.

Help Every day at 10pm, Metcheck checks the values at strategic places around the globe to view the values of the three main teleconnections. NAO - North Atlantic Oscillation AO - Arctic Oscillation PNA - Pacific North America Pattern

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