Understanding the potential impacts of sulfate aerosol injections on the climate system
with Dr. Daniele Visioni, Postdoctoral Associate, Sibley School of Mechanical and Aerospace Engineering, Cornell University.
Abstract: Past explosive volcanic eruptions have shown that large SO₂ injections in the stratosphere have a temporary cooling effect on our planet's temperatures. This has led some to propose artificial injections of SO₂ to ameliorate some of the effects of climate change, as a supplement to emission reduction. Numerous climate models have analyzed the potential impacts that this would have, finding some broad areas of agreement over the resulting climatic response, but also highlighting large inter-model differences. By looking at current modeling experiments such as multi-model intercomparisons as part of the Geoengineering Model Intercomparison Project (GeoMIP), and some large ensembles produced with the Community Earth System Model, I will provide my insight on how to interpret and communicate current results and uncertainties around this form of climate intervention, and about areas of future model improvements.
The Earth Science Colloquium Series, sponsored by Lamont-Doherty Earth Observatory and Columbia University Department of Earth and Environmental Sciences (DEES), provides a lively forum for discussing a wide variety of topics within the Earth sciences and related fields. Colloquia are attended by the full range of scientific and technical staff at LDEO. Colloquium attendance is required of all pre-orals DEES graduate students. The Colloquium Series supports the Lamont Seminar Diversity Initiative.