Concentrations of sulfur dioxide in polluted areas in India have decreased by around 40% between April 2019 and April 2020. Using data from the Copernicus Sentinel-5P satellite, from the European Union Copernicus program, scientists have produced new maps that show the drop in concentrations across the country in times of COVID-19.
SO2 concentrations over India from April 2019, compared to April 2020. Credit: Contains modified Copernicus data (2019-20), processed by BIRA-IASB
In a report by Greenpeace last year, India was named the world’s largest emitter of anthropogenic sulfur dioxide – a significant contributor to air pollution. Sulfur dioxide causes many health-related problems, can harm sensitive ecosystems and is also a precursor to acid rain.
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