Volcano Awareness Month 2022 Volcanic Gas Update — The ups and downs of Kīlauea’s gas emissions in 2021
linkIncredibly high sulfur dioxide (SO2) emission rates were measured during the lower East Rift Zone of Kīlauea in 2018—nearly 200,000 tonnes per day. Emissions dropped to only about 30 tonnes per day during Kīlauea’s non-eruptive quiet period from 2018–2020.