South Atlantic High
E601727
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.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
atmospheric circulation feature
ⓘ
semi-permanent anticyclone ⓘ subtropical high-pressure system ⓘ |
| affects |
formation and steering of tropical and subtropical cyclones in the South Atlantic region
ⓘ
position and strength of the Intertropical Convergence Zone over the Atlantic ⓘ sea surface temperature distribution in the South Atlantic ⓘ upwelling along parts of the South American coast ⓘ upwelling along the southwest African coast ⓘ |
| alsoKnownAs |
South Atlantic anticyclone
NERFINISHED
ⓘ
South Atlantic subtropical high NERFINISHED ⓘ |
| associatedWith |
clear skies over its center
ⓘ
low precipitation over its center ⓘ persistent surface inversions in adjacent marine regions ⓘ |
| contributesTo |
arid climate of the Namib Desert
ⓘ
semi-arid climate of parts of northeastern Brazil ⓘ |
| drivenBy |
radiative cooling in the subtropical free troposphere
ⓘ
subsidence from the Hadley cell ⓘ |
| hasCharacteristic |
anticyclonic circulation
ⓘ
semi-permanent ⓘ subtropical ⓘ |
| influences |
Benguela Current
NERFINISHED
ⓘ
Brazil Current NERFINISHED ⓘ climate of eastern South America ⓘ climate of southern Africa ⓘ marine stratocumulus cloud decks off southwest Africa ⓘ ocean currents in the South Atlantic ⓘ precipitation patterns in adjacent continental regions ⓘ regional wind patterns over the South Atlantic Ocean ⓘ trade winds in the South Atlantic ⓘ |
| interactsWith |
Mascarene High
NERFINISHED
ⓘ
South Pacific High NERFINISHED ⓘ mid-latitude westerlies in the South Atlantic ⓘ |
| locatedIn |
South Atlantic Ocean
NERFINISHED
ⓘ
Southern Hemisphere ⓘ |
| partOf |
Hadley circulation system
NERFINISHED
ⓘ
subtropical high-pressure belt ⓘ |
| seasonalVariation |
shifts equatorward and weakens during austral summer
ⓘ
shifts poleward and strengthens during austral winter ⓘ |
| studiedIn |
climatology
ⓘ
physical oceanography ⓘ synoptic meteorology ⓘ |
| surfacePressure | typically above 1015 hPa ⓘ |
| typicalLatitudeRange | about 20°S to 35°S ⓘ |
| typicalLongitudeRange | eastern to central South Atlantic Ocean ⓘ |
| windCirculation | clockwise at the surface ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.