Satoshi Takahama¹, Charlotte Bürki², Matteo Reggente², Jenny L Hand³ and Ann M Dillner⁴, (1)Swiss Federal Institute of Technology Lausanne (EPFL), ENAC/IIE, Lausanne, Switzerland, (2)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland, (3)Colorado State Univ, Fort Collins, CO, United States, (4)University of California Davis, Air Quality Research Center, Davis, CA, United States