LA NINA
- January 5, 2021
- Posted by: OptimizeIAS Team
- Category: DPN Topics
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LA NINA
Subject : Geography
Context : After the pandemic-hit 2020 that saw demand destruction all round, a great weather market is upon us following the onset of La Nina.
Concept :
About La Nina :
- It means the large-scale cooling of ocean surface temperatures in the central and eastern equatorial Pacific Ocean, together with changes in the tropical atmospheric circulation, namely winds, pressure and rainfall.
- It has the opposite impacts on weather and climate as El Niño, which is the warm phase of the El Niño Southern Oscillation (ENSO).
Weather Changes due to La Nina :
- The Horn of Africa and central Asia will see below average rainfall due to La Niña.
- East Africa is forecast to see drier-than-usual conditions, which together with the existing impacts of the desert locust invasion, may add to regional food insecurity.
- It could also lead to increased rainfall in southern Africa.
- It could also affect the South West Indian Ocean Tropical Cyclone season, reducing the intensity.
- Southeast Asia, some Pacific Islands and the northern region of South America are expected to receive above-average rainfall.
- In India, La Niña means the country will receive more rainfall than normal, leading to floods.