Thick smog blankets New Delhi after Diwali fireworks

Environmental Impact and Air Quality

Following the celebration of the Hindu festival of Diwali, significant air pollution levels were recorded in New Delhi, India. The use of fireworks contributed to a rise in the Air Quality Index (AQI), exceeding 350 in several areas, which is classified as "severe" according to World Health Organization standards. This situation resulted in decreased visibility due to a widespread grey haze.

Regulatory Measures and Compliance

The Supreme Court of India recently adjusted the regulations on the use of firecrackers in New Delhi for Diwali, permitting the use of “green firecrackers” developed by federal research institutes. These firecrackers are designed to reduce particulate and gas emissions by approximately 30 percent. Despite these regulations allowing usage during specified hours, compliance was not widely observed.

Pollution Control Initiatives

In response to the increased pollution levels, authorities in Delhi have enacted measures to mitigate air quality issues. These include restrictions on construction activities and the use of diesel generators. However, experts emphasize the necessity for long-term strategies, such as the adoption of cleaner energy solutions and stricter vehicle emissions controls.

Scientific Findings on Pollution Effects

A recent study published in Scientific Reports highlights the impact of rising air pollution on sunlight exposure in India. The research indicates a decline in sunshine hours due to increased aerosols from industrial emissions, biomass burning, and vehicular pollution. This reduction in sunlight has implications for solar power generation and agricultural productivity, particularly in heavily polluted regions like northern India.

Researcher Manoj K Srivastava from Banaras Hindu University notes the broader environmental and health implications associated with decreased sunlight exposure, emphasizing the need for comprehensive pollution management strategies.