Has anyone ever seen measurements of what the Mount Erebus volcano on Ross Island, Antarctica is putting out? It erupted from 1976 through 1983, but evidence holds that the impact on stratospheric chlorine levels was minimal. However, there are still apparently emission levels of sulfur dioxide, chlorine, and fluorine.
An ice tower on Mount Erebus looms over an expeditioner
Image Credit: Phil Kyle -- New Mexico Tech
These measurements, however, might not be enough to account for the hole.
* Are there others in the Southern Hemisphere that might augment Erebus' effects?
* What do the Southern Hemisphere weather patterns look like around Antarctica -- referring to the possibility of a conduit for ozone-depleting chemicals, of course?
Current global volcanic CO2 estimates significantly underestimate the contribution from subaerial volcanism despite its importance to the pre-industrial geochemical carbon cycle. This is becoming clearer as more measurements are being conducted on volcanoes and the contribution from both passive and diffuse degassing may actually be more significant than that from eruptive degassing.
(More: Volcanic carbon dioxide and trace metal emissions from Mt. Erebus, Antarctica and White Island, New Zealand; contribution and implications to global atmospheric budgets; L.J. Wardell, Sept. 2002)
Dan
Current Events » in reply to Ozone hole bigger than ever.
re: I wonder . . .
The whole thread (30 posts)
- Ozone hole bigger than ever.
- The Ozone Hole was discovered in about 1957
- OZONE HOLES 101 - Class in session! (advanced class from the year 2190;-)
- More Environmental Nonsense From Tom
- I don't understand
- re: Ozone hole bigger than ever.
- re: I wonder . . .