Reduction in air pollution during lockdown in India may have prevented 630 premature deaths: Study

Washington, Apr 23: Air pollution over northern India has plummeted to a 20-year-low for this time of the year, according to satellite data published by US space agency National Aeronautics and Space Administration (NASA).
The US space agency's satellite sensors observed aerosol levels at a 20-year low post the countrywide lockdown, implemented to slow the spread of the novel coronavirus.

"We knew we would see changes in atmospheric composition in many places during the lockdown," said Pawan Gupta, a Universities Space Research Association (USRA) scientist at NASA''s Marshall Space Flight Center. "But I have never seen aerosol values so low in the Indo-Gangetic Plain at this time of year," added Mr Gupta.

Acting Assistant Secretary of State for South and Central Asia Alice G Wells tweeted, "These images from NASA were taken each spring starting in 2016 and show a 20-year low in airborne particle levels over India. When India and the world are ready to work and travel again, let's not forget that collaborative action can result in cleaner air."

The data published with maps show aerosol optical depth (AOD) in 2020 compared to the average for 2016-2019. Aerosol optical depth is a measure of how light is absorbed or reflected by airborne particles as it travels through the atmosphere.

If aerosols are concentrated near the surface, an optical depth of 1 or above indicates very hazy conditions. An optical depth, or thickness, of less than 0.1 over the entire atmospheric vertical column is considered "clean." The data were retrieved by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite.

In the first few days of the lockdown, it was difficult to observe a change in the pollution signature. "We saw an aerosol decrease in the first week of the shutdown, but that was due to a combination of rain and the lockdown," said Mr Gupta.

Around March 27, heavy rain poured over vast areas of northern India and helped clear the air of aerosols. Aerosol concentrations usually increase again after such heavy precipitation.

"After the rainfall, I was really impressed that aerosol levels did not go up and return to normal. We saw a gradual decrease and things have been staying at the level we might expect without anthropogenic emissions," Mr Gupta said.

On March 25, the Indian government placed its 1.3 billion citizens under a strict lockdown to reduce the spread of COVID-19. The countrywide mandate decreased activity at factories and severely reduced car, bus, truck and airplane traffic. Every year, aerosols from anthropogenic (human-made) sources contribute to unhealthy levels of air pollution in many Indian cities.

Aerosols are tiny solid and liquid particles suspended in the air that reduce visibility and can damage the human lungs and heart.

In southern India though, the story is a little hazier. Satellite data show aerosol levels have not yet decreased to the same extent. In fact, levels seem to be slightly higher than in the past four years. The reasons are unclear but could be related to recent weather patterns, agricultural fires, winds or other factors.

"This a model scientific experiment," Robert Levy, program leader for NASA's MODIS aerosol products, said about the lockdown and its effects on pollution.

"We have a unique opportunity to learn how the atmosphere reacts to sharp and sudden reductions in emissions from certain sectors. This can help us separate how natural and human sources of aerosols affect the atmosphere," Mr Levy added.

Nuapada, Jun 15: In a shocking incident, a 70-year-old elderly woman had to drag her 100-year-old bedridden mother on a cot to the nearby bank to withdraw pension money of Rs 1,500.

The incident came to light after a video of the woman dragging her bedridden mother on a cot to a bank in Odisha's Nuapada district went viral on social media.

The woman from Bargaon village dragged her mother on the cot after the bank official allegedly asked for physical verification. The incident took place on June 9.

"I went to the bank several times in last three months and requested the bank official to release the pension amount. However, the official informed that they would release the pension if I bring my mother to the branch," said Punjimati Dei.

Bank manager Ajit Pradhan allegedly asked Dei to bring her bedridden mother Labhe Baghel to the bank.

Her mother is an account holder under Jan Dhan Yojana of the Central government.

The Centre had announced Rs 500 monthly assistance for women Jan Dhan bank account holders from April to June in view of the COVID-19 situation.

A district administration official informed that the woman reached the bank with her mother before the manager could visit her home for the verification.

Jun 8: Petrol and diesel prices were hiked by 60 paisa per litre on Monday, for the second day in a row, as state-owned oil firms reverted to daily price revisions after a 83-day hiatus.

Petrol price in Delhi was hiked to Rs 72.46 per litre from Rs 71.86 on Sunday, while diesel rates were increased to Rs 70.59 a litre from Rs 69.99, according to a price notification of state oil marketing companies.

This is the second daily increase in rates in a row. Oil companies had on Sunday raised prices by 60 paisa per litre on both petrol and diesel after ending a 83-day hiatus in daily rate revision.

Daily price revision has restarted, an oil company official said.

While oil PSUs have regularly revised ATF and LPG prices, they had since March 16 kept petrol and diesel prices on hold, ostensibly on account of extreme volatility in the international oil markets.

Auto fuel prices were frozen soon after the government raised excise duty on petrol and diesel by Rs 3 per litre each to mop up gains arising from falling international rates.

The government on May 6 again raised excise duties by Rs 10 per litre on petrol and Rs 13 per litre on diesel.

Oil companies, instead of passing on the excise hike to consumers, decided to adjust them against the reduction required because of the drop in international oil prices. They used the same tool and did not pass on the Re 1 per litre hike required for switching over to ultra-clean BS-VI grade fuel from April 1.