University of Cambridge > Talks.cam > Climate and Environmental Dynamics - Department of Geography > Experimental insights on volcanic ash as a reactive agent in the environment

Experimental insights on volcanic ash as a reactive agent in the environment

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My research interests concern the reactivity of volcanic ash from explosive eruptions in the Earth system, drawing on aspects of volcanic geochemistry, atmospheric science, ocean biogeochemistry, and the interactions between them. My PhD work involved applying various experimental and analytical tools to investigate the capacity of ash as a sink for trace gases such as sulphur dioxide and ozone in the atmosphere, and as a source of the micronutrient iron to the ocean. This work also provided insight on magmatic and eruptive factors affecting the surface chemistry of ash. My most recent work dealt with determining controls on the activity of ash as ice-nucleating particles in the atmosphere, using laboratory methods of ash generation and treatment to disentangle the influence of different ash properties on ice nucleation. I will present here a few snapshots of this research, with the aim of sharing some experimental findings on ash as a reactive agent in the environment, and for the exciting opportunity to meet with future colleagues in the Volcanology and Climate and Environmental Dynamics groups at Cambridge.

This talk is part of the Climate and Environmental Dynamics - Department of Geography series.

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