African easterly waves
E829128
African easterly waves are westward-moving atmospheric disturbances originating over Africa that often serve as the seeds for tropical storms and hurricanes in the Atlantic.
All labels observed (1)
| Label | Occurrences |
|---|---|
| African easterly waves canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9922308 — 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: African easterly waves Context triple: [Atlantic hurricane season, influencedBy, African easterly waves]
-
A.
Intertropical Convergence Zone position
The Intertropical Convergence Zone position is the shifting belt of low pressure and converging trade winds near the equator that migrates seasonally, strongly shaping tropical weather and rainfall patterns.
-
B.
Madden–Julian Oscillation
The Madden–Julian Oscillation is a large-scale tropical atmospheric pattern characterized by eastward-moving pulses of enhanced and suppressed rainfall that strongly influence global weather and climate variability on intraseasonal timescales.
-
C.
Rossby waves
Rossby waves are large-scale atmospheric and oceanic waves driven by Earth's rotation and the variation of the Coriolis effect with latitude, playing a key role in shaping global weather and climate patterns.
-
D.
South Atlantic High
The South Atlantic High is a semi-permanent subtropical high-pressure system over the South Atlantic Ocean that strongly shapes regional wind patterns, ocean currents, and climate in adjacent parts of South America and Africa.
-
E.
Cyclones
Cyclones is the nickname of the Brooklyn Cyclones, a Minor League Baseball team based in Brooklyn, New York.
- 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: African easterly waves Target entity description: African easterly waves are westward-moving atmospheric disturbances originating over Africa that often serve as the seeds for tropical storms and hurricanes in the Atlantic.
-
A.
Intertropical Convergence Zone position
The Intertropical Convergence Zone position is the shifting belt of low pressure and converging trade winds near the equator that migrates seasonally, strongly shaping tropical weather and rainfall patterns.
-
B.
Madden–Julian Oscillation
The Madden–Julian Oscillation is a large-scale tropical atmospheric pattern characterized by eastward-moving pulses of enhanced and suppressed rainfall that strongly influence global weather and climate variability on intraseasonal timescales.
-
C.
Rossby waves
Rossby waves are large-scale atmospheric and oceanic waves driven by Earth's rotation and the variation of the Coriolis effect with latitude, playing a key role in shaping global weather and climate patterns.
-
D.
South Atlantic High
The South Atlantic High is a semi-permanent subtropical high-pressure system over the South Atlantic Ocean that strongly shapes regional wind patterns, ocean currents, and climate in adjacent parts of South America and Africa.
-
E.
Cyclones
Cyclones is the nickname of the Brooklyn Cyclones, a Minor League Baseball team based in Brooklyn, New York.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
atmospheric wave
ⓘ
meteorological phenomenon ⓘ synoptic-scale disturbance ⓘ |
| affects |
eastern Pacific tropical cyclone formation
ⓘ
tropical Atlantic weather patterns ⓘ |
| alternativeName |
AEWs
ⓘ
tropical waves ⓘ |
| associatedWith |
African easterly jet
ⓘ
convection ⓘ mesoscale convective systems ⓘ organized thunderstorm clusters ⓘ |
| causedBy | instability of the African easterly jet ⓘ |
| climatologicalFrequency | 20–60 per season in the Atlantic ⓘ |
| drivenBy |
African easterly jet
ⓘ
baroclinic instability ⓘ barotropic instability ⓘ |
| firstDescribedBy | Reginald E. Newell NERFINISHED ⓘ |
| firstDescribedInDecade | 1960s ⓘ |
| formsInLayer |
lower troposphere
ⓘ
mid-troposphere ⓘ |
| formsInSeason |
Northern Hemisphere early autumn
ⓘ
Northern Hemisphere summer ⓘ |
| influences |
Atlantic hurricane activity
ⓘ
rainfall over West Africa ⓘ rainfall over the Sahel ⓘ |
| movementDirection | westward ⓘ |
| observedBy |
radiosonde data
ⓘ
reanalysis data ⓘ satellite imagery ⓘ surface observations ⓘ |
| occursInBasin |
Caribbean Sea
ⓘ
North Atlantic Ocean ⓘ
linked to:
North Atlantic
eastern North Pacific Ocean ⓘ eastern tropical Atlantic ⓘ |
| originatesIn | Africa ⓘ |
| originRegion |
Sahel
ⓘ
Sudan region ⓘ |
| peakActivityMonth |
August
ⓘ
September ⓘ |
| propagationSpeed |
about 10–20 km/h
ⓘ
about 5–10 knots ⓘ about 6–12 mph ⓘ |
| roleInCyclogenesis |
precursors of hurricanes
ⓘ
precursors of tropical storms ⓘ seed disturbances for Atlantic tropical cyclones ⓘ |
| typicalAmplitude | low-level vorticity perturbation ⓘ |
| typicalPeriod | 3–5 days ⓘ |
| typicalStructure |
ridge at low levels
ⓘ
trough at low levels ⓘ vorticity maximum near the wave trough ⓘ |
| typicalWavelength | 2000–4000 km ⓘ |
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: African easterly waves Description of subject: African easterly waves are westward-moving atmospheric disturbances originating over Africa that often serve as the seeds for tropical storms and hurricanes in the Atlantic.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.