Chinese troops intrude in Arunachal, leave after four days

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, Mar 31: In order to prevent the spread of coronavirus, the Jammu and Kashmir administration on Tuesday declared 20 villages of Kashmir division as 'red zone'.
"20 villages including Parray Mohala Hajin, Chandergeer Hajin, Batagund Hajin in Bandipora district, Gudoora, Chandgam, Pinglena, Parigam, Abhama, Sangerwani and Khaigam in Pulwama district, Waskura in Ganderbal, Sedew, and Ramnagri in Shopian district have been declared as red zones," said Department of Information and Public Relations, J-K, in a tweet.

In Srinagar district, Mehjoor Nagar, Natipora, Lal Bazar, Eidgah and Shalteng villages have been declared as red zones.

"Chadoora in Budgam district of Kashmir division has also been declared as red zone," another tweet said.

The total number of COVID-19 cases in Jammu and Kashmir climbed to 49 after 11 more people tested positive in the Union Territory on Monday. While three of these cases were reported from Jammu region, eight were from the Kashmir division.

Indore, Feb 3: Senior Congress leader Digvijaya Singh on Sunday attacked the Centre for conferring the Padma Shri on Pakistan-origin singer Adnan Sami, who became an Indian citizen in 2016.

Addressing "Save the Constitution, Save the Country" rally here in Madhya Pradesh, Singh said Sami's father had "pounded India with bombs" when he was serving with the Pakistani Air Force (PAF).

"Since Sami is an artist who has come from Pakistan, I had recommended his case to the Indian government for citizenship. He has got Indian citizenship under the Modi government," the Congress leader said, adding that he never made any recommendation to the government for conferring Padma Shri on Sami.

He said Sami's father had "dropped bombs against us" while flying a Pakistan Air Force combat plane.

"In contrast, Indian Army officer Sanaullah of Assam, who had fought against the enemy, was sent to a detention camp for failing to show documents (during the Assam NRC exercise). This is the citizenship law of the Modi government," he said.

Sami, born in London to a Pakistani Air force veteran, applied for Indian citizenship in 2015 and became a citizen of the country in January 2016.

He was one of the 118 people chosen for the Padma Shri awards by the Centre last month.