Walker circulation
E880212
The Walker circulation is a large-scale atmospheric circulation pattern over the tropical Pacific characterized by east–west trade winds, rising warm air over the western Pacific, and descending cooler air over the eastern Pacific, strongly linked to phenomena like El Niño and La Niña.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Walker circulation canonical | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
atmospheric circulation pattern
ⓘ
large-scale circulation ⓘ |
| affects |
global precipitation patterns
ⓘ
global temperature anomalies ⓘ marine ecosystems in the tropical Pacific ⓘ position of the Intertropical Convergence Zone in the Pacific ⓘ tropical cyclone activity in the Pacific ⓘ |
| associatedWith |
El Niño
NERFINISHED
ⓘ
El Niño–Southern Oscillation NERFINISHED ⓘ La Niña NERFINISHED ⓘ |
| characterizedBy |
convection over the western Pacific warm pool
ⓘ
subsidence over the eastern Pacific ⓘ surface easterly trade winds along the equatorial Pacific ⓘ upper-tropospheric westerly winds over the equatorial Pacific ⓘ |
| contrastsWith | Hadley circulation NERFINISHED ⓘ |
| drivenBy |
zonal pressure gradient in the tropical Pacific
ⓘ
zonal sea surface temperature gradient in the tropical Pacific ⓘ |
| hasComponent | trade winds ⓘ |
| hasDirection | east–west ⓘ |
| hasFeature |
descending air over eastern Pacific
ⓘ
rising air over western Pacific ⓘ |
| hasPhase |
El Niño phase
ⓘ
La Niña phase ⓘ normal (neutral) phase ⓘ |
| hasSpatialOrientation | zonal ⓘ |
| influences |
Atlantic climate
ⓘ
Indian Ocean climate ⓘ Indonesian–Australian monsoon ⓘ South American climate ⓘ global climate variability ⓘ tropical Pacific rainfall patterns ⓘ |
| linkedTo |
Southern Oscillation
NERFINISHED
ⓘ
sea level pressure differences between western and eastern Pacific ⓘ thermocline depth variations in the equatorial Pacific ⓘ |
| modulatedBy |
climate change
ⓘ
ocean–atmosphere coupling ⓘ sea surface temperature anomalies ⓘ |
| namedAfter | Gilbert Walker NERFINISHED ⓘ |
| operatesOver | tropical Pacific Ocean ⓘ |
| partOf |
global atmospheric circulation
ⓘ
tropical atmospheric circulation ⓘ |
| relatedTo |
Bjerknes feedback
NERFINISHED
ⓘ
Pacific trade wind system NERFINISHED ⓘ |
| strongerDuring | La Niña events ⓘ |
| studiedIn |
climatology
ⓘ
ocean–atmosphere dynamics ⓘ tropical meteorology ⓘ |
| timescale | seasonal to interannual ⓘ |
| weakerDuring | El Niño events ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.