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Homechevron_rightIndiachevron_rightGlobal weather may be...

Global weather may be affected by El Nino's likely return in July

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Global weather may be affected by El Ninos likely return in July
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New Delhi: Following a rare triple-dip La Nina, there is an increasing likelihood that the equatorial Pacific Ocean will warm in the upcoming months, a phenomenon known as El Nino that is linked to higher global temperatures and is likely to affect India's monsoon season.

El Nino is now expected to develop with a 60% probability by the end of July and an 80% probability by the end of September, according to the United Nations' (UN) World Meteorological Organisation (WMO).

“This will change the weather and climate patterns worldwide,” said Wilfran Moufouma Okia, the head of the WMO’s regional climate prediction services division, while addressing reporters in Geneva in Switzerland.

The indications of El Nino this year also bring the curtains down on one of the longest-ever La Nina episodes in recorded history — only the third episode since 1950 to stretch into a third year.

La Nina refers to the phase of cooling of the sea-surface temperatures than normal.

India Meteorological Department (IMD) Director General Mrutyunjay Mohapatra said last week that any effect the El Nino might have on the monsoon will only be visible during the second half of the season.

“It is not necessary that an El Nino will lead to a bad monsoon. Of the 15 El Nino years from 1951 to 2022, there were six with normal to above normal rainfall,” he had said.

According to Mohapatra, a weather phenomenon called the Indian Ocean Dipole (IOD), which is caused due to an anomaly in the sea-surface temperature of the Indian Ocean, also plays an important role in the performance of the southwest monsoon.

He had said the climate models used by the IMD have indicated the development of a positive IOD, wherein the western Indian Ocean is warmer than the eastern basin.

A positive IOD could moderate the negative effect El Nino has on the monsoon in India.

Mohapatra had said the weather office would issue an update on the southwest monsoon forecast towards the end of this month.

In April, the IMD had forecast a normal monsoon season with 96 per cent rainfall of the Long Period Average of 87 cm rainfall.


With PTI inputs


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TAGS:El Nino weather patternGlobal weather
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