NAO Index for the period 1823 - 2002 (see sub-indicator for seasonal values for the years 1993 - 2002)
A positive index means mild and rainy winters in mid and northern Europe and relatively dry winters in southern Europe. A negative index leads to cold and dry winters in mid and northern and moist winters in southern Europe.
For references, please go to www.eea.europa.eu/soer or scan the QR code.
This briefing is part of the EEA's report The European Environment - State and Outlook 2015. The EEA is an official agency of the EU, tasked with providing information on Europe's environment.
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