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Volcano-Atmosphere Interactions
Volcanoes exert important controls upon the chemistry and radiative properties of the atmosphere, in particular via the conversion of SO2 to sulphate aerosol, which reflects sunlight back to space.
To date, most attention has been devoted to the impacts of large explosive eruptions upon the stratosphere, neglecting the sustained impacts upon the troposphere from open conduit volcanoes and effusive activity, which are believed to play an important role in countering the anthropogenic greenhouse effect.
In order to better constrain these perturbations, and based upon the above technological developments, I am involved in a number of studies in this area: better quantification of volcanic SO2 release to the troposphere; investigations into the multi-phase physico-chemical transformations occurring within low altitude volcanic plumes; and research into volcanogenic Br, I, N and Hg emissions, which have received little attention, hitherto.
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