Title

Effects of Volcanic Eruptions on Global Climate

Date

5-29-2014 1:50 PM

End Time

29-5-2014 2:10 PM

Location

Health and Wellness Center (HWC) 105

Department

Earth Science

Session Chair

Jeffrey Templeton

Session Title

“Eruptions that Shook the World” – Examining the Influence of Volcanism on the Earth System

Faculty Sponsor(s)

Dr. Jeffrey Templeton

Presentation Type

Presentation

Abstract

Global climate change as a result of explosive volcanism is caused primarily by the addition of SO2 into the atmosphere, not volcanic ash as many in the general public tend to believe. The SO2 gas reacts with the atmosphere and turns into sulphuric acid (H2SO4), which then forms an aerosol veil that circulates around the Earth. This aerosol veil is what ultimately causes the climate change, creating cooler summers and warmer winters. While the regional effects of the aerosol veil can vary widely, the net cooling of global climate was 0.5°C as a result of the Mt. Pinatubo eruption in 1991. In general, the effects of the aerosol veil can persist for up to three years in the atmosphere, but the effects of climate change on the oceans can last for as long as a century.

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May 29th, 1:50 PM May 29th, 2:10 PM

Effects of Volcanic Eruptions on Global Climate

Health and Wellness Center (HWC) 105

Global climate change as a result of explosive volcanism is caused primarily by the addition of SO2 into the atmosphere, not volcanic ash as many in the general public tend to believe. The SO2 gas reacts with the atmosphere and turns into sulphuric acid (H2SO4), which then forms an aerosol veil that circulates around the Earth. This aerosol veil is what ultimately causes the climate change, creating cooler summers and warmer winters. While the regional effects of the aerosol veil can vary widely, the net cooling of global climate was 0.5°C as a result of the Mt. Pinatubo eruption in 1991. In general, the effects of the aerosol veil can persist for up to three years in the atmosphere, but the effects of climate change on the oceans can last for as long as a century.