1. Improved Fossil CO 2 emissions for the North American Carbon Program (NACP) : the “Vulcan” project Kevin Gurney Daniel Mendoza, Broc Seib, Chris Miller Purdue University Department of Earth and Atmospheric Science Purdue Climate Change Research Center Rosen Center for Advanced Computing Steve Knox, Scott Denning, Kathy Corbin, Dennis Ojima Colorado State University Marc Fischer, Scott Murtishaw Lawrence Berkeley National Laboratory Supported by NASA grant NNG05GG12G www.purdue.edu/eas/carbon/vulcan.html

2. Old vs “Vulcan” natlog of tonnes C/day: January 3, 2002 Country-level consumption Distrib. By 

3. “point” sources Tonnes C/day/facility

4. “on-road” sources

5. Dynamic emissions Rush hours: 8 am, 6 pm peaks Dominant in exurban/rural

6. Both Sides Now…….