First Global Maps of Volcanic Emissions Use NASA Satellite Data – NASA https://www.nasa.gov/centers-and-facilities/goddard/first-global-maps-of-volcanic-emissions-use-nasa-satellite-data/
Volcanoes erupt, they spew ash, their scarred flanks sometimes run with both lava and landslides. But only occasionally. A less dramatic but important process
Fioletov, an atmospheric scientist at Environment and Climate Change Canada in Toronto