1. Air Resources Division, National Park Service, Denver, Colorado, USA
2. Department of Meteorology and Measurement, Bay Area Air Quality Management District, San Francisco, California, USA
3. Integrated Renewable Energy Systems Network, Davis, California, USA
4. EPRI, Palo Alto, California, USA
5. Department of Civil and Environmental Engineering, University of California, Irvine, California, USA
6. Cantech Environmental Services, Toronto, Ontario, Canada