Uddhav compares Sharad Pawar to Hafiz Saeed

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.

Jaipur, July 13: Amid a deepening political crisis in Rajasthan where the number 2 leader of the Congress party Sachin Pilot has revolted, over 200 Income Tax (I-T) sleuths raided the residences and properties of two of Chief Minister Ashok Gehlot’s close confidants.

The Income Tax department has carried out searches at over a dozen locations linked to Congress leader Dharamender Rathore as well as jewellery firm owner Rajiv Arora, both of whom are considered close to Gehlot.

Officials said that the raids that are underway in Jaipur, Kota, Delhi, and Mumbai were done after a complaint of tax evasion was made. Under the scanner, they said, are transactions that were made outside the country.

The curious timing of the Income Tax department’s action against Gehlot’s aides has made the Congress accuse the sleuths of acting on the behest of the BJP.

Congress spokesperson Randeep Singh Surjewala tweeted: “After all, BJP's lawyers came on the field. The Income Tax Department started raids in Jaipur. When will ED arrive?”

The Congress is facing a cliffhanger in Rajasthan after the open rebellion by deputy chief minister Sachin Pilot, who on Sunday night claimed that he had the support of 30 MLAs and that Gehlot was leading a minority government in the state.

However, Congress leader Avinash Pande on Monday said 109 MLAs have signed a letter of support to the chief minister, well above the majority mark of 100. The party has issued a whip to all the MLAs, asking them to attend the Congress Legislature Party meeting at 10.30 am. 

New Delhi, Feb 4: The investigation into the incident of violence at Jamia Millia Islamia during an anti-citizenship law protest was at a crucial stage, the Centre told the Delhi High Court on Tuesday.

The submission before a bench of Chief Justice D N Patel and Justice C Hari Shankar was made by Solicitor General Tushar Mehta while seeking more time to file a report regarding the probe.

Taking note of the submission, the bench granted the Centre time till April 29 to file a reply.

During the hearing, senior advocate Colin Gonsalves, appearing for some students of Jamia, said 93 students and teachers filed complaints about alleged attacks on them by police but no FIR has been filed against the agency till date.

The other lawyers for the petitioners alleged that the government has not complied with the court order to file a response within four weeks of the last date of hearing on December 19.

The bench, however, declined to pass any interim order and granted time till April 29 to the government to file a reply.