concepts
type: Collection
type: ConceptGroup
member: north atlantic oscillation

north atlantic oscillation
type: Concept
broader: oceanography
definition: The north atlantic oscillation (nao) refers to a large-scale oscillation of atmospheric mass observed across the North Atlantic Ocean. The NAO was first identified in the 1920s by Sir Gilbert Walker. [Source: Encyclopedia of Environment and Society; North Atlantic Oscillation (NAO)]

oceanography
type: Concept
narrower: north atlantic oscillation