Pacific-north american pattern
From AMS Glossary
Revision as of 19:33, 25 April 2012 by Perlwikibot
Pacific–North American pattern
(Abbreviated PNA pattern.) A wave-train signal that spans from the equatorial Pacific through the northwest of North America to the southeastern part of North America.
This is the strongest teleconnection pattern of low-frequency variability of the atmospheric circulation in winter in response to changes in the sea surface temperature.