Rising sea levels real threat to NASA launch sites

New Delhi, Mar 26: Despite repeated assurances by the Centre and state government of no shortage of food and essential services in Delhi, many daily wage earners have started fleeing the national capital on foot to return to their native villages in nearby Uttar Pradesh and other states because of the hardships being faced by them.
Most daily wage earners who are fleeing have complained that they are doing so because they will die of hunger due to lack of resources at their disposal.
"I am going to Azamgarh, my native place which is more than 800 kilometers from here. We have started walking towards our village. On the roads, if we get some vehicles then it will be all right otherwise we will continue on foot. I used to work in the construction sector but all work has stopped, we therefore have no other means to buy our rations. Atleast, food is guaranteed in our homes," Ghanshyam, a daily wage earner, told ANI here.
Rani, another daily wage earner, who was fleeing Delhi along with her family said, "Who would want to leave on foot, but what other options do we have. Our children will die of hunger, even if they are saved from the disease. That is why we are leaving."
While the government has been assuring that it will provide food and other essentials to the low-income groups, the people complained that they are yet to receive any help.
The departing of people has started despite repeated warnings by governments to prevent the influx of persons living in other states to curtail the spread of coronavirus.
Prince, who used to reside in Mongolpuri area of Delhi, said, "If we continue to stay the landlord will pester us for rent. The prices of all commodities are rising with each passing day, this way we will have nothing left to survive. We did not get any help from the government. I am, therefore, returning to Kasganj, which is close to 300 kilometres from Delhi. We will at least get food served twice a day in the village, nobody is offering us even water here."
Earlier on Tuesday, Delhi Chief Minister Arvind Kejriwal had announced Rs 5,000 for each construction worker under Construction Workers Welfare Board Fund.
Addressing a video conference here, he said, "The Delhi government will give Rs 5,000 to each construction worker as their livelihood has been affected due the outbreak of coronavirus."
He also said that the number of night shelters in the city has been increased and more food is being distributed to homeless people.
He also said that due to curfew, several people were not able to get food, and urged the public to send such people to the nearest shelters of the Delhi government, where food was being arranged.

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.

New Delhi, Jun 18: Sonia Gandhi on Wednesday removed Sanjay Jha as a party spokesperson, days after he wrote a newspaper article criticising the party. She also approved the appointment of Abhishek Dutt and Sadhna Bharti as national media panelists for the Congress.

"Congress president has also approved that Sanjay Jha be dropped as AICC spokesperson with immediate effect," the party said in an official statement.

In the article published a few days ago, Mr Jha had said, "The Congress has demonstrated extraordinary lassitude, and its lackadaisical attitude towards its own political obsolescence is baffling..."

"I would like to call a spade a spade here and a shovel: there has been no serious effort to get the party up and running with any sense of urgency," he had said in the article in a national newspaper.

"There are many in the party who cannot comprehend this perceptible listlessness. For someone like me, for instance, permanently wedded to Gandhian philosophy and Nehruvian outlook that defines the Congress, it is dismaying to see its painful disintegration," he had said.