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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, Mar 20: The government on Thursday said one Indian who tested positive for coronavirus has died in Iran while the other citizens infected with the disease are being provided treatment and taken care of by the Iranian government.

Noting that the virus tends to be more fatal for those whose immunity levels are low, a senior MEA official said the deceased, an elderly person, belonged to the vulnerable age group and had health-related complications.

The death was not because of lack of medical attention or care, he said.

"We have evacuated 590 people from Iran where the situation is very severe. The Indians infected with coronavirus in Iran have been segregated and taken care of very well by the government there. We believe they will recover and we will bring them back," the MEA official said, adding that 201 Indians were evacuated from Iran on Wednesday.

The official said closely knit families required some persuasion and counselling during the process of segregation to prevent the spread of the contagion.

The Indian ambassador and other officials explained the consequences of infected people not being separated from their families and were successful to a large extent in segregating the positive cases from the negative ones, he said.

"Some pilgrims and students are still there and our embassy and mission are in control (of the situation)," the official said.

Mumbai, Mar 8: A day after the Enforcement Directorate registered a money laundering case against Yes Bank founder Rana Kapoor and raided his premises, he was taken to the agency's office in Mumbai on Saturday for further questioning.

Kapoor, who was grilled by central agency's officials on Friday night at his Samudra Mahal residence in Mumbai, was shifted to the ED office in the metropolis around 12.30 pm.

ED officials said Kapoor was questioned throughout the night, with some rest time.

A senior ED official connected with the probe told IANS: "Kapoor will be questioned about Yes Bank loans to Dewan Housing Finance Limited (DHFL)."

The official said that during searches a lot of incriminating documents were found and the agency wanted to grill him on his links with DHFL promoters and other companies.

Kapoor's alleged role in the disbursal of loan to a corporate entity and kickbacks reportedly received in his wife's bank account are also under probe.

The ED had filed the money laundering case against Kapoor and raided his residence, apart from issuing a look-out circular so that he does not flee the country.

The ED registered a money laundering case against Kapoor as a continuation of its probe against the DHFL wherein it was allegedly found that Rs 12,500 crore was diverted to 80 shell companies using one lakh fake borrowers. The transactions with these shell companies date back to 2015.

An ED official in New Delhi told IANS that the DHFL probe revealed that funds diverted by the DHFL originated from Yes Bank.

He said that the searches at Kapoor's residence on Friday night were meant to find out any irregularity in grant of loans to the DHFL by the Yes Bank.

The ED has accused Kapil and Dheeraj Wadhawan of DHFL of purchasing shares in five firms -- Faith Realtors, Marvel Township, Abe Realty, Poseidon Realty, and Random Realtors -- after which they were amalgamated with Sunblink.

The outstanding loans of these five firms, totalling around Rs 2,186 crore till July 2019, were allegedly appropriated onto the books of Sunblink to cover up the diversion of loans acquired from DHFL.

The ED's action comes after the RBI superseded Yes Bank Board for 30 days and appointed an administrator, putting a cap of Rs 50,000 on withdrawals by account holders for a month.

The RBI said that the bank's board was superseded "owing to serious deterioration in the financial position of the bank".

Former SBI CFO Prashant Kumar was appointed as administrator of Yes Bank, which has over 1,000 branches and 1,800-plus ATMs across the country.

On Thursday, Union Finance Minister Nirmala Sitharaman said that the bank was on watch since 2017 and developments relating to it were monitored on a day-to-day basis.