Cong steps up demand for Sushma Swaraj's sacking

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.

Ahmedabad, Mar 15: Four Congress MLAs in Gujarat have tendered their resignation to Assembly Speaker Rajendra Trivedi ahead of the election to the four Rajya Sabha seats in the state to be held on March 26.

The four Congress legislators tendered their resignation on Saturday, which Trivedi has accepted.

Trivedi told this to PTI on Sunday.

He said he will announce the names of the legislators in the Legislative Assembly on Monday.

"Four Congress MLAs tendered their resignation to me on Saturday, and I will announce their names in the Assembly tomorrow," he said.

With this, the strength of the Congress party in the 182-member Gujarat Assembly has come down to 69 from 73.

The Congress had on Saturday shifted its 14 MLAs to Jaipur fearing horse-trading by the ruling BJP ahead of the Rajya Sabha polls.

The BJP has fielded Abhay Bhardwaj, Ramila Bara and Narhari Amin for the election.

Given its number in the Assembly, the ruling party can only win two seats unless it manages cross-voting from the opposition camp or ensures defection of Congress MLAs to win the third seat.

The Congress has fielded senior leaders Shaktisinh Gohil and Bharatsinh Solanki.

New Delhi, Jul 25: Congress leader Rahul Gandhi on Saturday accused the government of benefitting by making profits during the coronavirus-induced lockdown when people were in trouble.

He tagged a news report that claimed the Indian Railways was making profit by running 'Shramik trains' for transporting migrants during the pandemic.

"There are clouds of disease and people are in trouble, but one seeks to benefit -- this anti-people government is converting a disaster into profits and is earning," he said in a tweet in Hindi.

The news report claimed that the railways made a profit of Rs 428 crore by running Shramik special trains during the lockdown that transported migrants to their native places.

In another tweet, he lauded the efforts of the Himachal government in conducting a survey to select 'one district, one product', saying he had suggested this sometime back.

"This is a good idea. I had suggested it some time back. Its implementation will need a complete change of mindset," he said on Twitter.

He also tagged a report that stated the state Industries Department is conducting a baseline survey in all districts to select one district, one product for centrally-sponsored Micro and Small Enterprises Cluster Development Programme (MSE-CDP).