Lt Col Shrikant Purohit greeted with flowers, says ‘I am happy’ with SC bail

Mar 16: A fourth batch of 53 Indians returned to India from Iran on Monday, taking the total number of people evacuated from the coronavirus-hit country to 389.

This comes a day after over 230 Indians were brought back from Iran to New Delhi and quarantined at the Indian Army Wellness Centre in Jaisalmer, the third batch to be evacuated from that country.

"Fourth batch of 53 Indians - 52 students and a teacher - has arrived from Tehran and Shiraz, Iran. With this, a total of 389 Indians have returned to India from Iran. Thank the efforts of the team @India_in_Iran and Iranian authorities," Jaishankar tweeted.

The Indians came in a Mahan Air flight that landed at the Delhi airport at around 3 am, officials said, adding that they were later taken to Jaisalmer in an Air India flight for being quarantined.

The first batch of 58 Indian pilgrims were brought back from Iran last Tuesday and the second group of 44 Indian pilgrim arrived from there on Friday.

Iran is one of the worst-affected countries by the coronavirus outbreak and the government has been working to bring back Indians stranded there. Over 700 people have died from the disease in Iran and nearly 14,000 cases have been detected.

Jaishankar had told Rajya Sabha last week that the government was focusing on evacuating Indians stranded in Iran and Italy as these countries are facing an "extreme situation".

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.

Patna, Jun 25: At least 83 people died due to thunderstorms in Bihar in the last 24 hours, according to Chief Minister's Office.

Bihar Chief Minister Nitish Kumar announced Rs 4 lakhs each for the families of deceased.

Thirteen people died in Gopalganj, 8 each in Madhubani and Nawada, 6 each in Baghalpur and Siwan, 5 each in Darbhanga, Banka, East Champaran and 3 each in Khagaria and Aurangabad.

Due to thunderstorms, two people each lost their lives in West Champaran, Kishanganj, Jamui, Jahanabad, Purnia, Supaul, Buxar, Kaimur while one death each was reported in Samastipur, Shivhar, Saran, Sitamarhi and Madhepura.