News > Air pollution: Low ozone layer found over Brahmaputra river valley

Air pollution: Low ozone layer found over Brahmaputra river valley

Scientists have evaluated the near-surface ozone in the Brahmaputra River Valley and found a relatively low concentration of Ozone over Guwahati compared to other urban locations in India.

Tropospheric, or ground-level ozone, is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC). It usually increases when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources chemically react in the presence of sunlight, impacting human health.