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I saw a program on TV that stated volcanic gas and/or ash is necessary for earth’s healthy atmosphere, and that volcanic

Posted: July 22nd, 2021, 1:28 pm
by sonny.zinn
[Note that the question and the answer below are recreated from a HYSPLIT FAQ site that predates this forum site. The original posting date is unknown.]

Question:
I saw a program on TV that stated volcanic gas and/or ash is necessary for earth’s healthy atmosphere, and that volcanic eruptions cause a protective layer between us and the sun. Is this in fact true?

Answer:
Our office deals with the atmospheric transport of volcanic ash, rather than the benefits of it. As one example, please see http://volcanoes.usgs.gov/Hazards/What/ ... osols.html.

Barbara Stunder