NAO index
E926141
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| North Atlantic Oscillation index | 2 |
| NAO index canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11440669 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: NAO index Context triple: [North Atlantic Oscillation, measuredBy, NAO index]
-
A.
Oceanic Niño Index
The Oceanic Niño Index is a standardized measure of sea surface temperature anomalies in the central equatorial Pacific used to monitor and classify El Niño and La Niña events.
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B.
Southern Oscillation Index
The Southern Oscillation Index is a standardized atmospheric pressure-based metric used to monitor and quantify the strength and phase of the El Niño–Southern Oscillation climate pattern.
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C.
NAOCE
NAOCE is an academic school specializing in naval architecture, ocean engineering, and civil engineering.
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D.
Arctic Oscillation
The Arctic Oscillation is a large-scale climate pattern characterized by opposing atmospheric pressure anomalies between the Arctic and mid-latitudes, strongly influencing weather and sea-ice conditions across the Northern Hemisphere.
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E.
Multivariate ENSO Index
The Multivariate ENSO Index is a composite climate indicator that tracks the strength and phase of El Niño–Southern Oscillation events using multiple atmospheric and oceanic variables.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: NAO index Target entity description: 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.
-
A.
Oceanic Niño Index
The Oceanic Niño Index is a standardized measure of sea surface temperature anomalies in the central equatorial Pacific used to monitor and classify El Niño and La Niña events.
-
B.
Southern Oscillation Index
The Southern Oscillation Index is a standardized atmospheric pressure-based metric used to monitor and quantify the strength and phase of the El Niño–Southern Oscillation climate pattern.
-
C.
NAOCE
NAOCE is an academic school specializing in naval architecture, ocean engineering, and civil engineering.
-
D.
Arctic Oscillation
The Arctic Oscillation is a large-scale climate pattern characterized by opposing atmospheric pressure anomalies between the Arctic and mid-latitudes, strongly influencing weather and sea-ice conditions across the Northern Hemisphere.
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E.
Multivariate ENSO Index
The Multivariate ENSO Index is a composite climate indicator that tracks the strength and phase of El Niño–Southern Oscillation events using multiple atmospheric and oceanic variables.
- F. None of above. chosen
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 ⓘ |
| fullName |
North Atlantic Oscillation index
ⓘ
linked to:
NAO index
|
| hasPhase |
negative phase
ⓘ
positive phase ⓘ |
| hasReferenceRegion |
Azores High region
ⓘ
linked to:
Azores High
Icelandic Low region ⓘ
linked to:
Icelandic Low
|
| 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
ⓘ
linked to:
Arctic Oscillation
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: NAO index Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NAO index