Sulfur dioxide is a colorless gas with a strong smell. In Europe, the energy supply sector was responsible for 41% of the emissions of SO2 in 2020.
Power plants
Volcanoes
Commercial and institutional boilers
Internal combustion engines
Manufacturing
Petroleum refining
Metal processing
Diesel engines in:
Buses
Trucks
Locomotives
Ships
Construction vehicles
source: signal-group.com/sulphur-dioxide/
source: nasa.gov
Click here to see the latest satellite images of SO2 concentration in the world.