Khurshid seeks TMC support on India-Bangla border deal

Thiruvananthapuram, Mar 8: Five more people from

Kerala have tested positive for coronavirus, Health minister, K K Shailaja said on Sunday.

All the five hail from Pathnamthitta district.

While three of them had returned from Italy on February 29, two others were their relatives, the minister said.

All the five have been isolated in Pathnamathitta general hospital and are under observation.

Their tests were confirmed on Saturday night.

Earlier, India's first three positive cases had been reported from the state.

All the three patients, medical students from Wuhan, have been treated and discharged from hospitals.

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.

More and more Indians have become better prepared in the last one month, as far as stocking of their ration, medicine or money is concerned, according to the IANS-CVoter COVID-19 Tracker.

With the second leg of the lockdown half way through and Prime Minister Narendra Modi saying it's a long haul, 57.2% respondents said they have less than three weeks of stock while 43.3% said they have a stock that will last beyond that

However, if one breaks into weeks, most respondents said they are prepared for a week's time. 24.5% respondents said they have ration, medicine or money to last a week. This is closely followed by 21.9 % respondents saying they are ready for a month.

Meanwhile, 20.4 % said they are ready for a couple of weeks. There are 15.8 % who said they are ready for more than a month with food, ration and medicine. A tiny 5.6 % said they are ready with three weeks of stock.

However, there is 12.3% who still seem to live on the edge with less than a week's preparation.

But, the biggest takeaway from the IANS-CVoter COVID-19 Tracker is that in the last one month, a massive segment of society realised that the fight is long and the preparation should also be to last that long.

o put things into context, on March 16 when the tracker started, a whopping 77.1% said they have stock to last for less than a week. More than a month later on April 21, that number jumped to just 12.3%, which essentially means, people have become better prepared for a long-hauled lockdown period.

Similarly, on April 21, a sizable 21.9% respondents claimed they are ready with ration and medicine that will last them a month. On March 16, not even one respondent could claim they have a month's stock. In fact till March 22, just ahead of the announcement of the first lockdown, no respondent the IANS-CVoter tracker said that they have a month's preparation.

Similarly, when the tracker started, 9.9% said they simply ‘don't know'. As on April 21, that number is a big zero.