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70% chance of El Nino effect on South-West monsoon : WRMS -M Somasekhar

-The Hindu Business line

Hyderabad: The chances of the El Nino phenomenon impacting the South West monsoon at its peak across India are 60 to 70 per cent, says Weather Risk Management Services (WRMS).

El Nino, which refers to the formation of warm water undercurrents in the Pacific Ocean, has been known to have an adverse effect on global weather patterns and occasionally affect the rainfall during the Indian monsoon season.

At the same time, another important parameter, called the Indian Ocean Dipole, is predicted to evolve towards a warm phase, which normally bestows a positive effect on the monsoon.

In view of these mixed developments, the monsoon rainfall during 2017 could be moderately on the negative side of the long-period range.

Giving these details to the media, Kanti Prasad, Head of Meteorological Services at the New Delhi-based WRMS and former technical director of the India Meteorological Department (IMD), said, “Large parts of North India, particularly North West India, may experience deficiency in overall precipitation, whereas the southern regions are expected to receive normal to excess rainfall”.

He was participating in a WRMS-organised seminar on ‘Insurance for covering seed germination and production risks’. The interpretation is based on information available from prominent World Climate Centres, the Climate Forecast System model, which the organisation uses to provide climate change-related risk management services, including weather forecasts in 15 countries, a press release said.

The impact of El nino on Monsoon rainfall could be in the later phase or late August-September.The monsoon will arrive near its expected date on June 1 over India and its distribution will be good helping sowing operations, Prasad said.

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