Prohibitory orders clamped in Thalassery, New Mahe police station limits

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.

Kolkata, Jan 28: West Bengal chief minister Mamata Banerjee Tuesday said she is ready for talks with Prime Minister Narendra Modi on the issue of Citizenship Amendment Act but the Centre has to first withdraw the contentious law.

Banerjee said protesting against the decisions of the centre doesn't make opposition parties anti-national and iterated that she will not implement CAA, NRC or NPR in the state.

"It is good that the prime minister is ready for talks but the Citizenship Amendment Act (CAA) must be revoked first. They (Centre) did not call an all-party meeting before taking a decision on Kashmir and CAA.

"We are ready for talks but first withdraw this Citizenship Amendment Act," Banerjee, a staunch critic of the BJP, said addressing a protest programme against CAA through paintings.

The West Bengal assembly had on Monday passed a resolution against the CAA to become the fourth state after Kerala, Punjab and Rajasthan, to do so. The state assembly had on September 6, 2019, passed a resolution against the NRC.

The World Bank says that a lack of credit and drop in private consumption have led to a gloomy growth outlook for India with a steep cut in growth rate for the current fiscal year and only a modest gain projected for the next year.

India's growth rate is forecast to be only 5 per cent for the current fiscal year, weighed down by a growth of only 4.5 per cent in the July-September quarter, according to the 2020 Global Economic Prospects report released on Wednesday.

"In India, [economic] activity was constrained by insufficient credit availability, as well as by subdued private consumption," the Bank said.

The growth rate is forecast by the Bank to pick up to 5.8 per cent in the next fiscal year and to 6.1 per cent in 2021-22.

India's growth rate was 6.8 per cent in 2018-19.

The 5 per cent growth rate projection for the current financial year is a sharp cut of 2.5 per cent from the 7.5 per cent forecast made by the Bank in January last year, toppling it from the rank of the world's fastest growing economy.

India's performance follows a global trend of lowered growth weighed down by developed economies.

The report estimated world economic growth rate to be only 2.4 per cent last year and forecast it to edge up 0.1 per cent to 2.5 per cent in the current year.

Even with the lower growth rate of 5 per cent in the current fiscal year and 5.8 per cent forecast for the next, India holds the second rank among large economies, behind only China with an estimated growth rate of 6.1 per cent for 2019 and 5.9 per cent this year.

The report blamed "weak confidence, liquidity issues in the financial sector" and "weakness in credit from non-bank financial companies" for India's slowdown.

The Bank predicated India's recovery to 5.8 per cent in the coming financial year for India but "on the monetary policy stance remaining accommodative" and the assumption that "the stimulative fiscal and structural measures already taken will begin to pay off."

It also warned that sharper-than-expected slowdown in major external markets such as United States and Europe, would affect South Asia through trade, financial, and confidence channels, especially for countries with strong trade links to these economies."

The Bank said that the growth of advanced economies was 1.6 per cent last year and "is anticipated to slip to 1.4 per cent in 2020 in part due to continued softness in manufacturing."

In contrast the growth of emerging market and developing countries is expected to accelerate from 3.5 per cent last year to 4.1 per cent this year, the report said.

In South Asia, Bangladesh is estimated to have the highest growth rate of 7.2 per cent in the current fiscal year, although down from 8.1 per cent last fiscal year.

But its higher regional growth rates are coming off a lower base with a per capital gross domestic product of $1,698 compared to $2,010 for India.

Bangladesh is expected to grow by 7.3 per cent in the next financial year.

Pakistan's growth rate is estimated at only 2.4 per cent in the current fiscal year and is projected to rise to 3 per cent in the next, according to the Bank.

The Bank blamed monetary tightening in Pakistan for a sharp deceleration in fixed investment and a considerable softening in private consumption for the fall in growth rate from 3.3 per cent in the 2018-19 fiscal year.

Sri Lanka's growth rate was estimated to be 2.7 per cent last year and forecast to grow to 3.3 per cent this year.

Nepal grew by an estimated 6.4 per cent in the current fiscal year and will rise to 6.5 per cent in the next.