As People Stay Home, Air Pollution In North India At 20-Year Low: NASA

News Network
April 23, 2020

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.

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Agencies
February 10,2020

New delhi, Feb 10: The Supreme Court on Monday upheld the constitutional validity of the SC/ST Amendment Act, 2018, and said a court can grant anticipatory bail only in cases where a prima facie case is not made out.

A bench headed by Justice Arun Mishra said a preliminary inquiry is not essential before lodging an FIR under the act and the approval of senior police officials is not needed.

Justice Ravindra Bhat, the other member of the bench, said in a concurring verdict that every citizen needs to treat fellow citizens equally and foster the concept of fraternity.

Justice Bhat said a court can quash the FIR if a prima facie case is not made out under the SC/ST Act and the liberal use of anticipatory bail will defeat the intention of Parliament.

The top court's verdict came on a batch of PILs challenging the validity of the SC/ST Amendment Act of 2018, which was brought to nullify the effect of the apex court's 2018 ruling, which had diluted the provisions of the stringent Act.

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News Network
March 18,2020

Muzaffarpur, Mar 18: Prisoners in the central jail here are working overtime to produce facemasks to prevent the deadly COVID-19 striking. In addition to providing protection to fellow inmates and prison staff, the produce will be shared with nine district and sub jails falling under Muzaffarpur Central Prison as well, Deputy Superintendent of the jail Sunil Kumar Maurya said. From supplications at places of worship to hectic activities at the biggest hospital, this north Bihar district is witnessing invocation of all powers, human and otherwise, to prevent novel coronavirus hitting them.

Although nobody has so far tested positive for the dreaded virus in Bihar, where the state government has imposed a semi-lockdown as a preventive measure, Muzaffarpur which hit the headlines last year for losing close to 200 children to an outbreak of brain fever seems determined not to fall prey to yet another virulent affliction.

On making of facemasks by about 50 prisoners, the Deputy Superintendent of the jail said, "We have had a tradition of producing fabric at the Muzaffarpur Central Jail. An idea was floated why not use the skills acquired for producing masks which are in great demand but in short supply.

The local administration seems impressed with the endeavour of the social outcasts to rise to a global challenge.

"It is a welcome step. Despite all precautions, we never know who is going to catch the infection at which place. The efforts by prisoners to protect themselves and the staff manning their premises is laudable. "Full assistance will be provided to Central Jail authorities in supply of the masks to other prisons," Sub Divisional Magistrate (East) Kundan Kumar said.

A conservative town inhabited by a deeply religious citizenry, Muzaffarpur is also witnessing prayer congregations at temples and mosques in keeping with the tradition here of people of all faiths coming together when faced with a major challenge.

The Garib Nath temple, a renowned shrine devoted to Lord Shiva which attracts devotees from far and wide, is witness to the power of faith trumping the biggest fears as the footfall seems to have increased since the outbreak.

The temples mahant Vinay Pathak says, "faith can move mountains. People come here in search of strength to face a crisis which has caused worldwide scare. We advise the visitors to conduct regular 'havans' at their houses just like we have been performing here. "The smoke emitted by burning of purified offerings cleanses the air and, who knows, could be an antidote as well," Pathak added.

Chanting of 'Mahamrityunjay mantra', which the faith believe to be potent enough to dispel illness and untimely death, is taking place round the clock at the shrine in addition to 'havans', the mahant said.

Just a few yards away stands the Chhata Chowk mosque where large number of devotees appear in skull-caps to offer namaz.

"It is a pandemic threatening to engulf the entire world and dua (prayers) are needed as much as dawa (medicines). May God, who is one, listen to the common wish expressed by humanity in myriad ways," says Imtiaz Ahmed, a devout local resident.

Meanwhile, the health authorities are busy with their own efforts, not leaving prevention and cure to divine intervention.

District Medical Officer Shailesh Kumar Singh says a total of 42 people here who have come from abroad, have been tested but their results have been negative.

"Nonetheless, a five-bed special ward has been set up at the Sadar Hospital, manned by medical staff armed with a special kit comprising medicines and other logistics required for primary care of those with suspected symptoms," he said.

The SKMCH referral hospital, which bore the brunt of last years brain fever epidemic accounting for over 120 deaths is fully geared up to meet the latest challenge.

SKMCH superintendent Sunil Shahi says "we have a 30- ward insulation ward ready. Samples of patients with suspected symptoms are being routinely sent to RMRI, Patna. We appeal to all to remain alert, but avoid panic."

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News Network
July 25,2020

New Delhi, Jul 25: The Indian Air Force (IAF) has made key appointments in its different commands all across the country including formations that look after operations along the borders with China and Pakistan.

Air Marshal Vivek Ram Chaudhari has been appointed as the head of the Delhi-based Western Air Command (WAC) which looks after both the crucial borders, with China in Ladakh and all along Pakistan from Ladakh up to Bikaner in Rajasthan.

Chaudhari would be assuming charge of the new office on August 1, replacing Air Marshal B Suresh who is superannuating after a brief tenure of nine months there.

In the Shillong-based Eastern Command, incumbent Air Marshal RD Mathur would be moving to the Bangalore-based Training Command on October 1, he will be replaced by Air Marshal Amit Dev. The Eastern Command looks after the entire Northeastern region including the border with China from Sikkim to Arunachal Pradesh.

As per the new appointments issued on July 24, Kargil war gallantry awardee Air Marshal Dilip Kumar Patnaik would be taking over as the Senior Air Staff Officer (SASO) at the Prayagraj-based Central Air Command.

On October 1, the Air Force would also get a new in-charge of personnel in Air Marshal RJ Duckworth who is presently the SASO in the WAC.

Air Marshal Vikram Singh would be the next SASO of the WAC. Air Marshal J Chalapati-- the officer who had briefed the Supreme Court on the Rafale issue last year, would be the SASO of the Trivandrum-based Southern Air Command.

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