15 trustees in Ram Temple trust including 1 Dalit: Amit Shah

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.

Srinagar, Feb 9: Authorities on Sunday snapped mobile internet services in Kashmir as a precautionary measure to prevent any law and order disturbance on the seventh death anniversary of Parliament attack convict Mohammad Afzal Guru, officials said.

The mobile internet services were suspended early in the morning as the authorities apprehended violence in the valley in view of the bandh call given by separatist outfits, the officials said.

The authorities had restored 2G internet services in Kashmir on January 25, more than five months after snapping all communication facilities in the valley following abrogation of Article 370 on August 5 last year.

Police on Saturday lodged an FIR against the banned Jammu Kashmir Liberation Front (JKLF) for calling a strike on Afzal Guru's death anniversary.

Guru was hanged in 2013 inside Tihar jail for his role in the Parliament attack in December 2001.

Two journalists were summoned by police for reporting the JKLF press release, which had called for strike on Sunday and Tuesday -- the death anniversary of the outfit founder Mohammad Maqbool Bhat.

They were let off after five hours of questioning. Bhat was hanged in 1984 and is buried inside Tihar jail.

Meanwhile, normal life in Kashmir was affected due to the strike, the officials said.

Markets and business establishments remained closed, while public transport was largely off the roads, they said.

There have been no reports of any untoward incident from anywhere in the valley so far, the officials added.

New Delhi, Mar 30: Prime Minister Narendra Modi on Monday interacted with Indian ambassadors and high commissioners abroad and urged them to remain alert to developments in global efforts against COVID-19 including breakthroughs to help the country's fight against the coronavirus.

External Affairs Minister S Jaishankar and Foreign Secretary Harsh Vardhan Shringla were also present during the interaction through video-conferencing.

"Coming together for India PM interacted with Indian Ambassadors/High Commissioners abroad and urged them to remain alert to developments in global efforts against COVID-19 including breakthroughs to help our national efforts to fight COVID19," External Affairs Ministry spokesperson Raveesh Kumar said in a tweet.

"PM appreciated the efforts of our missions in helping Indians abroad, in particular, students and workers," he added.

The number of positive coronavirus cases in the country stood at 1,071 on Monday. It includes 29 deaths and 99 people, who have been cured of the highly contagious virus.