How future volcanic eruptions will impact Earth's ozone layer
Volcanic eruptions could result in ozone depletion until 2070 or beyond, despite declining concentrations of human-made CFCs. The next major volcanic eruption could kick-start chemical reactions that would seriously damage the planet's already besieged ozone layer. The extent of damage to the ozone layer that results from a large, explosive eruption depends on complex atmospheric chemistry, including the levels of human-made emissions in the atmosphere. Using sophisticated chemical modeling, researchers from Harvard University and the University of Maryland explored what would happen to the ozone layer in response to large-scale volcanic eruptions over the remainder of this century and in several different greenhouse gas emission scenarios. The research was published recently in Geophysical Research Letters . Earth's stratosphere is still recovering from the historic release of chlorofluorocarbons (CFCs) and other ozone-depleting chemicals. Even though CFCs
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