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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News Network
June 25,2020

India has jumped past 4.5 lakh coronavirus cases and 14,476 people have succumbed to the viral infection so far. In this backdrop, speaking to IANS in an exclusive interview, AIIMS Director Randeep Guleria said India is also vulnerable to second wave of coronavirus and people should continue to follow social distancing, wearing mask and other precautions, after cases begin to decline.

He added that in order to contain the outbreak of Covid-19, a limited lockdown in hotspots, where volume of cases is very high, may be considered along with a micro-plan to prevent leakage of cases from these areas to other non-containment areas. Excerpts of the interview are below:

Q: Reports say China and South Korea are witnessing a second wave of coronavirus infection, what is this second wave, is India also vulnerable to this?

A: When cases come down significantly, people tend to drop their guard against the viral infection, and this leads to the second wave (which means a sudden increase in the number of cases). After cases begin to decline, people should continue to follow the precautions -- continue to maintain social distancing and wear masks regularly. See what happened in Singapore, it was struck by a second wave of coronavirus. Look, what happened in the 1918 pandemic, people dropped their guard and the second wave of viral infection struck back. If people do not follow social distancing then the spike in cases is apparent. We need to take these precautions at least for one year. India is also vulnerable to this second wave.

Q: If Covid-19 cases continue to rise rapidly, do you think we need another lockdown in areas where volume of cases are very high?

A: A large volume of cases is concentrated in specific areas like hotspots, and in order to maintain things in order, we may need a limited lockdown in these areas. This should be followed by a micro-plan which entails extensive testing of people and also extensive contact tracing of people who have got in touch with positive people. Need to ensure there is no leakage of cases from these areas. People from these areas should not mix with others in non-containment areas. This will aid in containing the outbreak of the virus. People who have developed symptoms should get themselves tested, especially in the containment areas.

Q: With more than 4.5 lakh cases and close to 14,500 deaths, do you think India has reached its peak and a decline in cases is prominent?

A: The cases will continue to increase for some time. The doubling time of cases has also increased. But, the cases will also begin to flatten. Though, it is difficult to give an exact time period in this viral infection, it seems, the growth in cases will flatten in the end of July or beginning of August. A decline will come to this viral infection, but it does not mean that people should drop their guard. As a measure, we need to decrease community participation and citizens should continue to follow social distancing. People should get themselves tested. All these efforts will help in preventing people from contracting this virus. These precautions will also prevent us from the second wave, and we must continue to take precautions. The virus has not gone away, it is still lurking.

Q: India has crossed the 4.5 lakh coronavirus cases so far, although our recovery rate is good, but still 10,000 to 15,000 cases are reported daily. Why do cases continue to spiral, what is the reason?

A: We have to remember a few things -- the bulk of cases are in 10 cities, nearly 70 per cent, and if we take into account cases per million population, the number is not very high, as compared with countries including countries in Europe. Many European countries put together still do not add up to the Indian population. Do not compare India to countries like Italy, Spain etc. We need to focus on hotspots, which contribute to between 70 -80 per cent of cases, and we have to identify cases in these areas at an early stage. The population density is very high in these cities. People in lower socio-economic status are highly vulnerable to the viral infection, as many live together in small spaces and there is a lot of mixing of people happening there. Look at the market places, people are not following social distancing and not wearing masks. In fact, many are in close vicinity of each other.

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News Network
January 27,2020

Jaipur, Jan 27: Senior Congress leader Shashi Tharoor said that if the Citizenship Amendment Act leads to the implementation of the NPR and the NRC, it would be a complete victory for Pakistan's founding father, Muhammad Ali Jinnah.

He said that Jinnah's idea of a country was already winning in India with the contentious Citizenship Amendment Act (CAA) coming into effect, but asserted that there was still a choice available.

"I would not say Jinnah has completely won, but I would say Jinnah is winning. There is still a choice available to the nation between Jinnah's idea of a country and Gandhiji's idea of a country," he said on the sidelines of the Jaipur Literature Festival on Sunday.

The CAA came into force in India in December amid protests across the country and around the world.

The MP from Thiruvananthapuram said that the amended Citizenship Act took Jinnah's logic by declaring that religion shall be the basis of nationhood, reaffirming that Gandhi's idea is that all religions are equal .

"The CAA is, if you are talking Tennis, you would say one set up or big first set lead for Jinnah. But the next step would be if the CAA would lead to the National Population Register (NPR) and the National Register of Citizens (NRC). If that happens, then you would consider that Jinnah's victory is complete," he said.

The CAA seeks to grant citizenship to migrants belonging to Hindu, Sikh, Buddhist, Christian, Jain and Parsi communities who came to India from Pakistan, Bangladesh and Afghanistan on or before December 31, 2014.

On the BJP's defence that the NPR was carried out during the UPA regime, Tharoor said that the Congress government had utilised a decision of the NDA government led by former prime minister Atal Bihari Vajpayee.

"It never asked where were your parents born. It never authorised the enumerators to note on the margin 'dubious citizenship', a term used in the NPR rules crafted by this government. That is purely BJP's invention," he said.

If we go around this country authorising people to interview all the citizens, or identify some who have 'dubious citizenship', you can be pretty sure which Indians are going to be found on the 'dubious citizenship', he said.

"That will principally be one community that is not mentioned in the CAA. And if that happens, then it is indeed Jinnah's victory.

"From wherever he is, he can point to this place and say, 'see I was right in the 1940. We are separate nations and Muslims deserved their own country because Hindus cannot be just'," Tharoor said.

Speaking about the Delhi election, the three-time MP said that the maximum development in the national capital happened under the Congress government.

"What Sheila Dikshit did in her 15 years as Chief Minister of Delhi, no other leader could do it before or after her," he said.

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Agencies
February 25,2020

New Delhi, Feb 25: Union Home Minister Amit Shah on Monday told a meeting of Delhi Lieutenant Governor Anil Baijal, Chief Minister Arvind Kejriwal and party leaders that "professional assessment" is that the violence in north-east Delhi has been "spontaneous".

He also said adequate forces have been already deployed in affected areas even as he urged political parties to avoid provocative speeches and statements which could flare up the situation and desist from rumour-mongering. He also instructed Delhi Police Commissioner Amulya Patnaik to re-activate local peace committees. 

"Shah noted that the professional assessment is that the violence in the capital has been spontaneous. He expressed confidence in Delhi Police and said that the force has shown maximum restraint to get the situation under control," a statement issued by the Ministry of Home Affairs (MHA) said.

However, on Monday, government sources had claimed that violence in the national capital "appeared to be orchestrated" to coincide with the high-profile visit. A PTI report from Hyderabad on Tuesday also quoted Minister of State for Home G Kishan Reddy as saying that the violence in Delhi has been perpetrated intentionally and the Narendra Modi government would not tolerate such incidents. 

While Shah said adequate forces have been deployed, there were also reports that the Delhi Police Commissioner told MHA top brass that it did not have adequate forces to control the violence that erupted in north-east Delhi. However, Delhi Police later tweeted that the Commissioner has denied that "no such information was given to MHA" and such reports were "totally baseless". 

Urging parties to avoid provocative speeches and statements which could flare up the situation, the statement said, Shah expressed confidence in Delhi Police and said that the force has shown maximum restraint to get the situation under control.

Appealing to all to maintain restraint and desist from rumour-mongering while instructing the Delhi Police Commissioner to re-activate local peace committees, Shah said Delhi's borders with Uttar Pradesh and Haryana have been under surveillance for the last three days. 

Shah also urged parties to ask their local leaders to hold meetings in sensitive areas and instructed senior police officers to visit vulnerable police stations at the earliest

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