Institutional Seminar Series
Tuesday, October 3
Scripps Seaside Forum Auditorium
11:30 a.m. Pizza will be served
12:00 p.m. Talks begin
Please join us for the Institutional Seminar Series lunch forum sponsored by the Director's office featuring the following speakers:
Title: “How to end up in a sea of icebergs”
Ice loss from Greenland increased significantly over the last two decades and now accounts for a quarter of global sea level rise. Half of this loss is due to the retreat of glaciers and was likely triggered by ocean warming. To test this hypothesis we need data from the glacier margins and models that can tell us how a glacier responds to a changing ocean. When Greenland’s glaciers started retreating, however, we had neither. This sets the stage for much of the science I have engaged in over the last decade. It has brought me, and my collaborators, to explore creative ways to collect data near majestic but dangerously crumbling glacial cliffs using helicopters, seals, autonomous vehicles and the knowledge of the local people. Here, I summarize some of what we have learned, what we still don’t know and argue that research in this area exemplifies how addressing complex, societally-relevant problems in the earth sciences requires an inclusive, collaborative, cross-disciplinary and varied approach.
Title: “Social cost of carbon in a new era of nationalism”
Despite imperfections, the social cost of carbon (SCC) is a highly salient and broadly applied metric of the damages of climate change. Recent estimates of SCC range from approximately $10/tonne of CO2 to as much as $1000/tCO2, but these have been computed at the global level. While useful in an optimal policy context, global estimations of SCC obscures the heterogeneous geography of climate damages, as well as climate and socio-economic uncertainties, which are larger at the regional level. This work estimates country-level contributions to SCC using recent climate and carbon-cycle model projections, empirical economic damage estimations, and information from the Shared Socio-economic Pathways. While the magnitude of country-level social cost of carbon is highly uncertain, the relative positioning among countries is consistent. Countries incurring large fractions of the global cost include India, China, and the United States. The share of SCC distributed among countries is robust, indicating climate change winners and losers from a geopolitical perspective.