Southern Oscillation

Southern oscillation refers to a seesaw shift in surface air pressure at Darwin, Australia and the South Pacific Island of Tahiti. When the pressure is high at Darwin it is low at Tahiti and vice versa.

The Southern Oscillation Index (SOI) is calculated from the monthly or seasonal fluctuations in the air pressure difference between Tahiti and Darwin.

Southern Oscillation - the reversal of typical surface air pressure patterns across the tropical Pacific that occurs during a major El Niño event ...

Southern Oscillation Index
The Southern Oscillation Index (SOI) is calculated from the monthly or seasonal fluctuations in the air pressure difference between Tahiti and Darwin.

Southern Oscillation (ENSO): A periodic reversing of the surface air pressure pattern across the tropical Pacific Ocean.

SOUTHERN OSCILLATION A periodic reversal of the pressure pattern across the tropical Pacific Ocean during El NiÑo events. It is represents the distribution of temperature and pressure over an oceanic area.

Southern Oscillation (SO) A "see-saw" in surface pressure in the tropical Pacific characterized by simultaneously opposite sea level pressure anomalies at Tahiti, in the eastern tropical Pacific and Darwin, on the northwest coast of Australia.

Southern oscillation Opposing swings of surface air pressure between the central and western tropical Pacific Ocean.
Specific heat The amount of heat required to raise the temperature of 1 gram of a substance by 1 Celsius degree.

SOI (Southern Oscillation Index) - SOI is based on the (atmospheric) pressure difference between Tahiti and Darwin, Australia. It is highly correlated with tropical sea surface temperature anomaly indices recorded in Niño3.

El Nino Southern Oscillation (ENSO): An acronym designed to stress the special importance of the warm phase (El Nino) of the Southern Oscillation. See El Nino and Southern Oscillation.

Southern Oscillation (ENSO)(6)
Shifting of pressure zones in the Pacific during an El Niño event.
Southern Oscillation Index (SOI)(3) ...

El Niño-Southern Oscillation (Main article on El Niño and the related Southern Oscillation, discussing the relation between these two and La Nina)
Walker circulation
[edit] References ...

El Ni¤o- (or Southern Oscillation)
Warming of the water in the tropical eastern Pacific Ocean which has world-wide implication on weather patterns especially in tropical regions.
Ensemble Forecasts ...

ENSOAbbreviation for El Niño-Southern Oscillation, a reference to the state of the Southern Oscillation.ENSO Diagnostic DiscussionThe CPC issues the ENSO Diagnostic Discussion around the middle of the month.

ENSO (El Nino-Southern Oscillation) Interacting parts of a single global system of climate fluctuations. ENSO is the most prominent known source of interannual variability in weather and climate around the world, though not all areas are affected.

ENSO: El Nino-Southern Oscillation.
ETA: "Eta" (from Greek) model generated every 12 hours by NCEP.
FAIR: Less than 4/10 opaque cloud cover, no precipitation, and no extremes in temperature, visibility or winds.

Madden-Julian Oscillation(abbrev. MJO)- Tropical rainfall exhibits strong variability on time scales shorter than the seasonal El Niño-Southern Oscillation (ENSO).

Two main characteristics distinguish PDO from El Niño/Southern Oscillation (ENSO): first, 20th century PDO "events" persisted for 20-to-30 years, while typical ENSO events persisted for 6 to 18 months; second, ...

Southern Oscillation A large-scale atmospheric and hydrospheric fluctuation centered in the equatorial Pacific Ocean. It exhibits a nearly annual pressure anomaly, alternatively high over the Indian Ocean and high over the South Pacific.

(abbrev. MJO)- Tropical rainfall exhibits strong variability on time scales shorter than the seasonal El Niño-Southern Oscillation (ENSO).

ɬ±o-Southern Oscillation (ENSO). These fluctuations in tropical rainfall often go through an entire cycle in 30-60 days, and are referred to as the Madden-Julian Oscillation or intraseasonal oscillations.

The 'El Nino' phenomenon, or more strictly the warm El Nino -Southern Oscillation (ENSO) event is coupled closely to remarkable shifts in weather patterns in the immediate Pacific basin, and adjacent areas: e.g. parts of North America.

ENSO Cycle: El Niño Southern Oscillation Cycle. The ocean-atmosphere interactions in the tropical and equatorial Pacific region involving abnormal sea surfae temperatures and atmospheric pressures.

temporal evolution in the equatorial Pacific is, to a considerable extent, the mirror image of El Niño, although La Niña events tend to be somewhat less regular in their behavior and duration. See also El Niño- Southern Oscillation.

ENSO - El Niño Southern Oscillation. Periodic shifting of both lower level and upper air winds along the equator in the Pacific ocean. The ENSO allows El Niño and La Niña cycles to occur.

a single numerically-derived number, that represents the distribution of temperature and pressure over a wide ocean area, such as the El Niño-Southern Oscillation, North Atlantic Oscillation, and Pacific Decadal Oscillation).

See also: Temperature, Ocean, Weather, Surface, Water