The Hunga Tonga volcano released a relatively small amount of sulfur dioxide for a cooling effect, with estimates ranging from 0.42 million tonnes to 1.5 million tonnes (0.42 to 1.5 Tg) injected into the stratosphere. While this was much less than previous volcanic eruptions like Mount Pinatubo, it still caused a temporary cooling effect primarily … Read more
Sulfur is in the atmosphere today, primarily as sulfur dioxide (๐๐2) from both natural sources like volcanoes and human activities like burning fossil fuels. While it’s a trace gas on Earth with concentrations around 15 parts per billion (ppb), it’s a major component of other planets’ atmospheres and has significant effects on Earth’s air quality … Read more
The history of atmospheric sulfur began with Earth’s early, anaerobic atmosphere, where volcanic activity released abundant sulfur compounds that fueled early life and influenced climate. As oxygen levels rose around 2.5 billion years ago, the sulfur cycle transformed, and human industrial activity significantly increased sulfur dioxide emissions from the 19th century onward, leading to pollution … Read more
