Udayavni Special

Climate change makes Indian monsoon stronger, more erratic: Study


PTI, Apr 15, 2021, 2:15 PM IST

 

Climate change is making India’s monsoon stronger and more chaotic, scientists said Wednesday, warning of potentially severe consequences for food, farming and the economy affecting nearly a fifth of the world’s population.

A new analysis comparing more than 30 climate models from around the world predicts more extremely wet rainy seasons, which sweep in from the sea from roughly June to September each year.

Researchers at the Potsdam Institute for Climate Impact Research (PIK) found strong evidence that every degree Celsius of warming would likely increase monsoon rainfall by about five per cent.

The study not only confirmed trends seen in previous research but found “global warming is increasing monsoon rainfall in India even more than previously thought,” said lead author Anja Katzenberger, also of Ludwig Maximilian University.

“It is dominating monsoon dynamics in the 21st century.”

This raises the possibility that key crops — including rice — could be swamped during crucial growing stages.

Moreover, the monsoon is likely to become more erratic as warming increases, according to the study, published in the journal Earth System Dynamics.

“Since Indian society is overall affected by the monsoon in a very strong way, stronger variability produces problems for agriculture, but also for the organisation of public life,” said Anders Levermann from PIK and Columbia University.

“If your roads are flooded, if your train tracks are flooded, that inhibits economic productivity.”

He said the year-to-year variability would also complicate strategies to cope with the increasing strength of the rainy season.

“More chaos in the Indian monsoon rainfall will make it harder to adapt,” he told AFP.

Climate impacts

The research tracked dramatic shifts in the monsoon from the mid-20th century when human-driven alterations began to overtake the slower natural changes that occur over millennia.

Initially, air pollution from aerosols — which largely reflect sunlight and act to subdue warming — caused monsoon rainfall to decrease.

But then, from the 1980s, the warming effects of greenhouse gases began to dominate, driving stronger and more volatile rainy seasons, the researchers said.

The planet’s average surface temperature has gone up 1.1 degrees Celsius on average compared to the late 19th-century, with much of that warming occurring in the last half-century.

The 2015 Paris Agreement enjoins the world’s nations to collectively cap global warming at “well below” 2C, and even 1.5C if feasible — although experts say that target is fast slipping out of reach.

Last year, five of the costliest extreme weather events in the world were related to Asia’s unusually rainy monsoon, according to a tally by the charity Christian Aid.

Intense flooding in China and India, where the monsoon season brought abnormal amounts of rainfall for the second year running, is consistent with projections on how climate will impact precipitation.

In 2013, some 6,000 people died when flash floods and landslides swept away entire villages in the Indian state of Uttarakhand as rivers swollen by monsoon rains overflowed.

Udayavani is now on Telegram. Click here to join our channel and stay updated with the latest news.

Top News

Cyclone Tauktae: NDRF earmarks 53 teams for five states

Cong MPs, legislators in K’taka to use LAD fund for procurement of vaccines: Siddaramaiah

Petrol, diesel prices rise again, reach record highs

CM BSY garlands Basaveshwara statue to mark Basava Jayanti

Moodbidri: MLA Umanath Kotian chairs Covid task force meeting

KP Sharma Oli reappointed as Nepal PM as Opposition fails to muster majority

‘Friends’ reunion special to premiere on HBO Max on May 27



Related Articles More

PS5 Digital version now listed on Sony Center Website

Facebook to roll out new campaign in India to fight COVID-related misinformation

Instagram’s new feature allows users to add pronouns to their profile

US-approved vaccines effective against B.1.617 variant of Covid-19: Official

Govt approves procurement of 1.5 lakh units of DRDO’s ‘Oxycare’ system

MUST WATCH

Covid Impact on the Sandalwood Industry

Groom Plays The Band At His Own Wedding

Outrage at Dictatorial Attitude: Mass Resignation from Doctors in Unnao

BMTC launches Oxygen Bus Service

Vaccines only for 45+ age group in Karnataka

Latest Additions

Cyclone Tauktae: NDRF earmarks 53 teams for five states

A Japanese town used COVID relief fund to build a 43-foot long statue of a squid

Viral Video: Man mistakenly calls Remdesivir as Remo D’Souza

Viral video: Mice rain in Australia

Govt working in war-footing mode to fight second wave of COVID-19: PM Modi

Thanks for visiting Udayavani

You seem to have an Ad Blocker on.
To continue reading, please turn it off or whitelist Udayavani.