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Resource: used or used up in processesSulfur dioxide
Appears in 1 process and 3 steps. Everything below is linked: open a process to see it in context.
Top processes
- Over 90 persistently degassing volcanoes emit about 23 Tg of SO2 a year (2005-2015)
- Burning coal and oil is the largest SO2 source; human emissions peaked in the early 1970s, fell to 2000, then rose with China and shipping
- SO2 lasts only a few days in the lower air, oxidising to sulfuric acid in the gas phase and inside cloud droplets
Often found with
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