Is La Nina the reason behind rainfall in (August-September)?

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In simpler terms, La Nina means girl child. It is an event just opposite to El Nino, describing the cold event along the South American coast off equatorial Pacific ocean. Here, trade winds get stronger than usual, pushing warm water towards Asia and neighboring regions resulting, increase amount of rainfall and flood in one region, while, drought in other parts of the world. It may lasts from one to three years, unlike El-Nino, which lasts hardly for a year. El Nino is associated with drought or weak monsoon while La Nina is associated with strong monsoon and above average rains and colder winters.
It further results early arrival of cold and harsh winters as well. Like the last year, winters arrived in November. 


But, when asked by IMD Expert, he said that Indian Ocean Dipole (The Indian Ocean Dipole (IOD) is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia). The IOD affects the climate of Australia and other countries that surround the Indian Ocean Basin, and is a significant contributor to rainfall variability in this region) is also a factor behind this rainfall.

Therefore, it could coincide with the post monsoon cyclone season, developing over Bay of Bengal, said Sunitha Devi, in charge of cyclones at IMD.


Human induced climate change implies the impacts of naturally occurring events like La Niña and is increasingly influencing our weather patterns, in particular through more intense heat and drought – and the associated risk of wildfires – as well as record-breaking deluges of rainfall and flooding which never happened in the past decades. Be it Turkey, Sudan or Western Europe mostly regions witnessed heavy to very heavy rainfall.

"We have seen this with devastating and tragic effect in the past few months in nearly all regions of the world. Climate change is increasing the severity and frequency of disasters," - WMO Secretary-General Petteri Taalas.

Retreating of Monsoon, was expected on September 17 2021, but due to these weather disruptions it is expected to retreat in the mid of the October 2021.

Nature retaliates always, whatever is happening is happening because of humans (us). Its time for us to take a pause to look back and think of what we have done to our Biosphere.


Location: India

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