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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.

New Delhi, Apr 3: Prime Minister Narendra Modi on Friday urged people to gather together for a unique exercise on April 5 at 9 pm to show they were together in the fight against coronavirus.

"On this Sunday, April 5, we will challenge the darkness of coronavirus threat together. On April 5, at 9 pm, I need your 9 minutes. At 9 pm, turn off all the lights in your houses and light a Diya, candle, torch or flashlight for 9 minutes at your doors, or balcony," Modi said.

The Prime Minister further said that this will send out a message that nobody among the 130 crore Indians is alone in this fight against the deadly infection.

"I have one more prayer to all of you, nobody has to gather at any place during this event. Everyone will light a Diya only at their doors, windows or balconies. The Laxman Rekha of social distancing must be followed," Modi said.
Earlier, the Prime Minister had said that 130 crore Indians are together in this fight against coronavirus and praised the countrymen for following the lockdown.

"Today when crores of people are inside homes, then some of us may think how will they fight this battle against COVID-19 alone. Such questions might come up in your mind? But please remember, none of us is alone. The strength of 130 crores of Indians is with each one of us," he said.

He also expressed gratitude towards countrymen for participating in 'Janata curfew' on March 22 and said it has become "an example for all countries" today as they are following it.

In his address to the nation on March 24, the Prime Minister had announced a 21-day lockdown in the country to contain the spread of novel coronavirus, which has infected over 2,000 people in the country.

During the last "Mann Ki Baat" on COVID-19 related issue, the Prime Minister had apologised to the countrymen for taking the tough decision of enforcing complete lockdown in the nation. "My conscience says you will forgive me," he had said.

Financially troubled Yes Bank on Saturday reported a standalone net loss of ₹ 18,560.31 crore for the third quarter of the financial year 2019-20. This is amongst the biggest losses reported by the India Inc.

At present, the private lender is under a moratorium and is controlled by the office of the administrator appointed by the RBI.

The bank had reported a net profit of ₹1,001.85 crore during the corresponding period of the previous financial year.

Besides, the bank's total income fell to Rs 6,268.50 crore from Rs 8,849.81 crore earned during the October-December quarter of the previous fiscal.

On consolidated basis, Yes Bank reported a net loss of ₹18,564.24 crore for the December quarter from a net profit of Rs 1,000.57 crore in the corresponding period of the previous fiscal.

The independent auditor's review report on the consolidated results pointed out that there is a "material uncertainty related to going concern" of the bank.

"The said assumption of going concern is dependent upon the degree of success of the final reconstruction scheme, the quantum of capital infused into the bank and the bank's ability to stabalise its deposit balances post withdrawal of the moratorium by the RBI. Our conclusion is not modified in respect of this matter," the auditor said.

Furthermore, the bank recognised additional loans of ₹ 5,150.2 crore as NPAs and related provisioning requirements of ₹772.5 crore for the quarter ended December 31, 2019.

The bank has recognised an additional provisions of ₹15,422.0 crore in the quarter ended December 31, 2019.

Last week, the RBI placed Yes Bank under moratorium and capped the withdrawal limit at ₹50,000 till next Wednesday.

Additionally, the central bank also superseded Yes Bank's board of directors and appointed former SBI CFO Prashant Kumar as its administrator.

Meanwhile, Kumar has been appointed as the new Chief Executive Officer of the financially troubled lender. He will take over his new responsibilities once the moratorium on the stressed lender is lifted on Wednesday.

Apart from Kumar, Sunil Mehta, former non-executive Chairman of Punjab National Bank, will take over as the non-executive Chairman of Yes Bank.

Other board members include Mahesh Krishnamurthy and Atul Bheda, both as non-executive Directors.

Additionally, six private lenders have joined the SBI to rescue Yes Bank with Federal Bank committing ₹300 crore by subscribing to 30 crore shares of ₹2 each at a premium of ₹8 per equity share.

The six private lenders have now committed an investment of ₹3,700 crore in the cash-strapped private sector bank.

On Friday, ICICI Bank and Housing Development Finance Corporation (HDFC) Ltd had announced that they will be investing ₹1,000 crore each in Yes Bank's equity. Axis Bank and Kotak Mahindra Bank will be investing ₹ 600 crore and ₹500 crore, respectively, while Bandhan Bank will invest ₹300 crore.

The SBI board has already approved up to 49 per cent stake purchase in Yes Bank, as per the RBI's reconstruction scheme for the lender. It had said on Thursday that an investment of ₹7,250 crore would be made in Yes Bank to pick up₹ 725 crore equity shares.