Scientists have found relatively low concentration of Ozone over Guwahati near surface ozone in the Brahmaputra River Valley (BRV) compared to the 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 and other sources chemically react in the presence of sunlight, impacting human health.
