Terror threat: J&K govt asks tourists to vacate Valley

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.

Kashmir, Jun 14: An Army personnel was killed and two others were injured as Pakistani troops opened fire and shelled areas along the Line of Control in Poonch district of Jammu and Kashmir, officials said on Sunday.

This is the third fatality in the Pakistani firing and shelling on forward posts and villages in the twin districts of Poonch and Rajouri this month.

The officials said the latest firing and shelling from across the border took place in Shahpur-Kerni sector on Saturday night, drawing strong retaliation by the Indian Army.

Three Indian Army personnel were injured in the Pakistani firing and were immediately evacuated to hospital, where one of them succumbed to injuries, the officials said.

They said the casualties suffered by the Pakistani Army in the retaliatory action were not known immediately.

On June 4, havaldar P Mathiazhagan fell to Pakistani firing in Sunderbani sector of Rajouri district, while on June 10, Naik Gurcharan Singh lost his life in a similar incident in Rajouri sector.

Hyderabad, Apr 12: Indicating that prolonged lockdown to contain coronavirus spread may lead to job cuts in the Indian IT industry, NASSCOM former president R Chandrashekhar has said that the work-from-home culture may become a positive development in the long run as it opens up newer avenues and save investments by IT firms.

The former bureaucrat also said startups which are surviving on funds infused by venture capitalists may face tougher situations if the present scenario deteriorates.

"The larger companies may not be actually cutting jobs for two reasons. One is that they do not want to lose their employees and they have money to pay. Many of them ( big companies), even if they do shed some jobs it might be at the most people who are on temporary or intern type and all. But they would not want regular and permanent employees to go. So as long as they have sufficient flexibility in their books, they would continue," said NASSCOM former president.

"But beyond a point that it goes on, for let us say, two months or three months, then even for them, they will feel the pressure. They may not just keep on providing subsidies to the employees. So the key question will be how long that goes on," Chandrasekhar said.

He also said the work-from-home systems being adopted by several firms across the globe, including India, may have a negative impact on the industry in the short-term, but in the long run it would change the work culture which hitherto was not experienced by many of the IT firms in India.

 On impact of the prolonged lockdown on startups, he said it would be a big challenge for the budding enterprises as the investments they get are based on their ideas and future revenues and the present situation under which peoples movement is curbed may shackle their progress.

 "Where will they (startups) get money to pay salaries to their employees. Venture capital investors would not pay the money or invest their money to pay salaries because they are not in the charity business."

If the employees are not paid and if they leave and it is difficult for the startup againto come up. So the whole investment plan goes for a toss, he said.

Former chairman of NASSCOM, B V R Mohan Reddy said a clear picture as to what is going to happen has not yet emerged as the situation with all respects is still evolving. Reddy said there will be a demand shrinkage for the IT industry as the entire world is under stress. "There is no economy in this world that is going to do well in this situation.

So, therefore, there will be a demand shrinkage, he said, indicating tougher times of the industry ahead.