The Rogers (1984) North Atlantic Oscillation Index (1874-2005)

The North Atlantic Oscillation is the opposition noted in sea level pressures in every month of the year between the subtropical and subpolar Atlantic. The varying gradient of pressure between these regions is a measure of the strength of the North Atlantic westerlies. This website contains the following information:

Updated NAO index values Description of the NAO Index Datasets
Azores/Iceland NAO Dataset Advantages
The Mercurial Barometer at Akureyri, Iceland
Historical Bibliography of North Atlantic Oscillation Research

Jeff Rogers' home page

For further information e-mail Jeff Rogers at

Last updated: December 2005