SYLLABUS SECTION: GS III (ECONOMY)
WHY IN THE NEWS?
Recently, the India Meteorological Department (IMD) Monsoon Forecast for the 2022 southwest monsoon was 103 percent of the Long Period Average (LPA).
- IMD says that 99 percent of LPA was predicting in April as La Niña conditions are expected to prevail during the entire stretch of the four-month monsoon season.
- LPA of rainfall is the rainfall recording over a particular region for a given interval (like month or season) average over a long period like 30 years, 50 years, etc.
- It acts as a benchmark while forecasting the quantitative rainfall for that region for a specific month or season.
- The LPA for the seasonal rainfall for the country as a whole from 1971 to 2010 is 87 centimeters (cm).
- IMD forecast is based on the fact that La Nina, which contributes to moisture availability over the subcontinent will be favorable throughout the season.
- If the negative Indian Ocean Dipole (IOD) condition, increases the chances of suppressing monsoon bursts over the Indian subcontinent, will be not there monsoon LPA would be 103%.
- This will be good for the production of both pulses and oilseeds.
- Good production will help in tempering the prices of pulses and particularly in the case of oilseeds that have been on the boil for the past few months.
- Normal rains are good for higher grain production during the Kharif season when crops like paddy, coarse cereals, pulses, and soybean are sown.
- La Nina, also known as a little girl, is the cooling phase weather pattern that occurs in the Pacific Ocean. La Nina is considered positive for the Indian monsoon.
- El Nino, also known as a little boy or Christ Child, is the warming phase of the Pacific Ocean.
- Together, La Nina and El Nino are cold (La Nina) and warm (El Nino) phases of El Nino-Southern Oscillation (ENSO).
INDIAN OCEAN DIPOLE:
The IOD is a coupled ocean and atmosphere phenomenon, similar to ENSO but in the equatorial Indian Ocean.
- warmer sea surface temperatures in the western Indian Ocean relative to the east
- easterly wind anomalies across the Indian Ocean and less cloudiness to Australia’s northwest
- less rainfall over southern Australia and the Top End.
- cooler sea surface temperatures in the western Indian Ocean relative to the east
- winds become more westerly, bringing increased cloudiness to Australia’s northwest
- more rainfall in the Top End and southern Australia.
Read more: UPSC CURRENT AFFAIRS
Source: Business Standard