📝 El Nino is weaker than anticipated: IMD

From UPSC perspective following things important:

🔘 Prelims level: El Nino, La Nino and IOD concepts. Read the connected newstrail to fill in the static gaps in your understanding

🔘 Mains level: These kind of phenomenons are important for the static part of the syllabus. Expect a direct question if already not asked

🔴 What: 

The India Meteorological Department(IMD) is expecting better this year.

🔴 Why: 

Because El Nino would be much weaker than anticipated.

🔘 New monsoon forecast system: IMD has shifted to  a new monsoon forecast system, called a dynamical model that works by supercomputers simulating the weather and extrapolating it(i.e. Deducing the weather by assuming that existing trends will continue).

🔴 What is El Nino?

🔘 The El Nino is characterised by surface waters of the equatorial Pacific warming up by more than half a degree

🔘 It is known to negativey affect monsoon rain every six out of 10 years

🔘 A positive Indian Ocean Dipole (IOD) is said to buffer the impact of El Nino and contribute to better rains

🔘 The Indian Ocean Dipole (IOD) is also known as the Indian Niño,
IOD is an irregular oscillation of sea-surface temperatures in which the western Indian Ocean becomes alternately warmer and then colder than the eastern part of the ocean

🔘 The IOD is a swing in surface temperatures that turns the western Indian Ocean alternately warmer and then colder than the eastern part of the ocean

#Prelims #GS1 #Geography
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