1. Department of Urban and Regional Planning, University of Colorado Denver, Denver, Colorado 80217, United States
2. CU Population Center, University of Colorado Boulder, Boulder, Colorado 80309, United States
3. MIT Senseable City Lab, Cambridge, Massachusetts 02139, United States
4. Department of Civil and Environmental Engineering, Tufts University, Medford, Massachusetts 02155, United States
5. Global Centre for Clean Air Research (GCARE), School of Sustainability, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH Surrey, U.K.
6. Institute for Sustainability, University of Surrey, Guildford, GU2 7XH Surrey, U.K.
7. NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, United States