Southern Oscillation Index is the seesaw relationship in sea level pressure between
The Southern Oscillation Index (SOI) is a key indicator used in climatology. It measures the fluctuations in sea level atmospheric pressure.
Southern Oscillation Index Regions
The SOI specifically quantifies the seesaw relationship, or pressure difference, between two distinct oceanic regions:
- The eastern tropical Pacific Ocean.
- The tropical Indian Ocean.
The variation in pressure between these two areas is fundamental to understanding major climate phenomena like the El Niño-Southern Oscillation (ENSO).
Important Questions from Enso and Ocean-Atmosphere
- Which of the following is NOT a dominantly interannual phenomenon?
- How does El Nino influence atmospheric $\text{CO}_2$ levels?
- Which one of the following has a positive correlation with the NINO3 INDEX, which represents ENSO variability?
Given:
a) The Eastern Indian Ocean is warmer than the Western Indian Ocean
b) The Eastern Indian Ocean is colder than the Western Indian Ocean
c) Excess anomalous rainfall in the East Africa
d) The westerly wind anomaly is in the Eastern Indian Ocean
Which of the above conditions co-occur with the positive Indian Ocean Dipole?
- Which one of the following anomalous features is NOT associated with the El Nino?
