Consider the following statements :
1. A positive Southern Oscillation Index (SOI) indicates a good Indian monsoon.
2. A negative SOI is often seen in the El-Nino years.
Which of the statements given above is/are correct ?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
The Southern Oscillation Index (SOI) is an index that is based on the difference in air pressure between Tahiti and Darwin. The SOI is closely related to the El Nino/La Nina climate phenomenon. A consistently negative SOI often indicates the presence of an El Nino. A consistently positive SOI often indicates the presence of a La Nina. This also indicates a good Indian monsoon.
The Southern Oscillation Index (SOI) is an index that is based on the difference in air pressure between Tahiti and Darwin. The SOI is closely related to the El Nino/La Nina climate phenomenon. A consistently negative SOI often indicates the presence of an El Nino. A consistently positive SOI often indicates the presence of a La Nina. This also indicates a good Indian monsoon.