1. Climate Change Science Institute and Environmental Sciences Division; Oak Ridge National Laboratory; Oak Ridge Tennessee USA
2. Computational Earth Sciences Group, Earth and Environmental Sciences Division; Los Alamos National Laboratory; Los Alamos New Mexico USA
3. Computational Physics and Methods Group, Computer, Computational and Statistical Sciences Division; Los Alamos National Laboratory; Los Alamos New Mexico USA
4. Applied Mathematics and Plasma Physics Group, Theoretical Division; Los Alamos National Laboratory; Los Alamos New Mexico USA
5. Earth Systems Observations Group, Earth and Environmental Sciences Division; Los Alamos National Laboratory; Los Alamos New Mexico USA