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 Judy Twedt
 University of Washington
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To prepare for my fellowship at the Geophysical Fluid Dynamics Lab (GFDL), I took a graduate course in climate modeling taught by Professors Cecilia Bitz and Luanne Thompson. In this hands-on course we ran snowball earth and North Atlantic 'hosing' simulations with the Community Earth System Model (CESM),experimented with different ocean forcings using the Modular Ocean Model (MOM), and built a simple model to explore climate sensitivity using a model developed by Isaac Held in his recent paper Probing the Fast and Slow Components of Global Warming by Returning Abruptly to Preindustrial Forcing.

As a term project, I studied the effect of geoengineering via stratospheric sulfate injections on the surface temperatures of the Southern Ocean using the coupled atmosphere-ocean model CCSM4. This project branched off of recent research by Kelly McCusker, a graduate student in the Dept. of Atmospheric Sciences. Slides from my presentation and term paper are linked here:

GeoEngineering Presentation
Term paper

More coming soon...