Hindu Sena members vandalise Pak Airline office

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.

Thane, Feb 28: Former BJP MLA Narendra Mehta was on Friday charged for allegedly  raping and harassing a woman corporator in Bhayandar, which is in the Thane district near Mumbai, on Friday, police said.

His associate Sanjay Tharthare has also been charged in the case, they said.

The district rural police lodged an FIR against Narendra Mehta, who resigned from the BJP three days ago, and his associate, an official from the Mira-Bhayandar police station said.

No arrest has been made till now.

A video of the corporator purportedly speaking about the alleged harassment and abuse she suffered at the hands of Narendra Mehta went viral on social media two days ago, the official said.

The corporator has alleged that the abuse is going on since 1999 and her family is facing threats from him, he added.

Narendra Mehta and Sanjay Tharthare were charged under relevant section of the Indian Penal Code for rape and other relevant provisions of the Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989, he said.

Meanwhile, Shiv Sena MLA Pratap Sarnaik demanded the immediate arrest of Narendra Mehta, saying it is a "tragedy" that the BJP, which raises the issue of women's safety in the state, has not taken any action against its leader.

"Law and order issue will arise if such a person (facing rape and harassment charges) roams freely. He should be arrested as soon as possible," Mr Sarnaik said.

The Thane legislator also termed Narendra Mehta as "Marathi-hater" and alleged that he had once questioned Chief Minister Uddhav Thackeray's culture.

"I wonder why the BJP did not take strict action against Mehta, it needs to introspect," Mr Sarnaik said.