NAO index

E926141

atmospheric circulation index climate index teleconnection pattern index

The NAO index is a climatological metric that quantifies the strength and phase of atmospheric pressure differences over the North Atlantic, used to characterize and predict regional weather and climate variability.

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Statements (50)

Predicate	Object
instanceOf	atmospheric circulation index ⓘ climate index ⓘ teleconnection pattern index ⓘ
affects	North Atlantic sea surface temperature patterns ⓘ blocking frequency over the North Atlantic–European sector ⓘ ocean circulation in the North Atlantic ⓘ sea ice conditions in the North Atlantic and Arctic gateway regions ⓘ storm tracks over the North Atlantic ⓘ winter precipitation patterns in Europe ⓘ winter temperature patterns in Europe ⓘ
appliesToSeason	boreal autumn ⓘ boreal spring ⓘ boreal winter ⓘ
basedOn	atmospheric pressure differences between subtropical high and subpolar low ⓘ sea level pressure anomalies ⓘ
computedFrom	area-averaged sea level pressure over subtropical and subpolar boxes ⓘ pressure differences between a subtropical and a subpolar station ⓘ
describes	North Atlantic Oscillation NERFINISHED ⓘ
fullName	North Atlantic Oscillation index NERFINISHED ⓘ
hasPhase	negative phase ⓘ positive phase ⓘ
hasReferenceRegion	Azores High region GENERATED ⓘ Icelandic Low region GENERATED ⓘ
hasVariant	principal component–based NAO index ⓘ station-based NAO index ⓘ
negativePhaseAssociatedWith	colder winters in northern Europe ⓘ reduced westerlies across the North Atlantic ⓘ wetter conditions in southern Europe and the Mediterranean ⓘ
negativePhaseCharacterizedBy	weaker than normal Azores High ⓘ weaker than normal Icelandic Low ⓘ
positivePhaseAssociatedWith	colder and drier conditions in southern Europe and the Mediterranean ⓘ enhanced westerlies across the North Atlantic ⓘ milder and wetter winters in northern Europe ⓘ
positivePhaseCharacterizedBy	deeper than normal Icelandic Low ⓘ stronger than normal Azores High ⓘ
quantifies	phase of atmospheric pressure differences over the North Atlantic ⓘ strength of atmospheric pressure differences over the North Atlantic ⓘ
relatedTo	Arctic Oscillation index NERFINISHED ⓘ North Atlantic jet stream variability ⓘ
timeScale	decadal variability ⓘ interannual variability ⓘ intra-seasonal variability ⓘ
usedBy	climatologists ⓘ meteorologists ⓘ seasonal forecasting centers ⓘ
usedFor	characterizing regional climate variability in the North Atlantic sector ⓘ predicting seasonal weather patterns in Europe ⓘ predicting seasonal weather patterns in eastern North America ⓘ studying decadal climate variability ⓘ studying interannual climate variability ⓘ

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

North Atlantic Oscillation → measuredBy → NAO index ⓘ