Protests in University over Muslim professor’s appointment

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 24: The total number of active COVID-19 cases reported so far in the country stands at 446 while the number of people who have been cured or discharged stands at 36, according to the Ministry of Health and Family Welfare.

Nine people have died from the disease while one case has migrated, the Ministry further informed.
The Central government has taken several steps to contain the rapid spread of the virus, including stoppage of all incoming passenger traffic on 107 immigration check posts at all airports, seaports, land ports, rail ports, and river ports.
There is a complete lockdown in as many as 548 districts of the country affecting several hundred million people.
The Indian Railways has also cancelled all passenger train operations till March 31.

New Delhi, Feb 4: Uttar Pradesh Chief Minister Yogi Adityanath on Monday accused Arvind Kejriwal of having a "partnership" with Pakistan and appealed to the people in Delhi to not vote for the AAP chief as it will make Pakistan happy.

Ramping up his attack on the Shaheen Bagh protest, Adityanath said that the protest against the Citizenship Amendment Act (CAA) is merely an excuse for people to vent their anger against the scrapping of Article 370.

"You must have seen their partnership on 370. Arvind Kejriwal used to speak in the same voice as Imran Khan on Article 370. You must have heard it.

"Now when elections are taking place in Delhi, who is speaking in favour of Arvind Kejriwal? It is the ministers of Pakistan. They are aware that Kejriwal is feeding 'biryani to protesters at Shaheen Bagh'," he said, referring to Pakistan minister Fawad Chaudhry's tweet asking Indians to defeat Prime Minister Narendra Modi.

Adityanath addressed three rallies on Monday in the national capital ahead of assembly elections.

"Will Pakistan decide who Indians should vote for. If voting for Kejriwal will make Pakistan happy, should it be done," he asked at a rally in Mehrauli.

Adityanath said his Delhi counterpart Kejriwal has become a "toy in the hands of anti-social and anti-India elements".

Addressing a rally in Vikaspuri in west Delhi, he said that Kejriwal is not bothered about key issues such as providing clean drinking water but is concerned about Shaheen Bagh, the anti-citizenship amendment act protest site.

At another rally in Uttam Nagar in west Delhi, Adityanath said Kejriwal has played with the emotions of the people of Delhi for the last five years.

"He obstructed the development of Delhi. And knowingly and unknowingly, he became a toy in the hands of anti-social and anti-India elements," Adityanath said.

The protest at Shaheen Bagh, he said, has disrupted traffic across the capital.

"A guest with an appointment to meet him at 9.30 am could only reach at 11. He told me he had left as early as 7 am but got stuck because of the traffic in Shaheen Bagh," he said.

The Uttar Pradesh chief minister also slammed Kejriwal for "sympathising" with elements who he said gave anti-India slogans in Jawaharlal Nehru University.