1. Cooperative Institute for Research in the Environmental Sciences and Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA.
2. Aerodyne Research, Billerica, MA, USA.
3. Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, USA.
4. Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, Villigen, Switzerland,
5. Atmospheric Sciences Research Center, State University of New York, Albany, NY, USA.
6. Department of Environmental Toxicology, University of California, Davis, CA, USA.
7. Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
8. Department of Atmospheric and Oceanic Science, University of Colorado, Boulder, CO, USA.
9. School of Earth, Atmospheric, and Environmental Science, University of Manchester, Oxford Road, Manchester, UK.
10. National Centre for Atmospheric Science, University of Manchester, Oxford Road, Manchester, UK.
11. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
12. Empa, Laboratory for Air Pollution/Environmental Technology, Dübendorf, Switzerland.
13. Department of Physics, University of Kuopio, Kuopio, Finland.
14. Finnish Meteorological Institute, Helsinki, Finland.
15. Department of Physics, University of Helsinki, Helsinki, Finland.
16. Department of Applied Environmental Science, Stockholm University, Stockholm, Sweden.
17. Department of Atmospheric Sciences, Texas A&M University, College Station, TX, USA.
18. Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan.
19. Department of Particle Chemistry, Max Planck Institute for Chemistry, Mainz, Germany.
20. Institute for Atmospheric Physics, Johannes Gutenberg University, Mainz, Germany.
21. Empa, Laboratory for Internal Combustion Engines, Dübendorf, Switzerland.
22. Centro de Investigaciones Quimicas, Universidad Autonoma del Estado de Morelos, Cuernavaca, Mexico.
23. Climate Change Research Center, University of New Hampshire, Durham, NH, USA.
24. Department of Civil and Environmental Engineering, Rice University, Houston, TX, USA.
25. Asian Environmental Research Group, National Institute for Environmental Studies, Tsukuba, Japan.
26. Sanyu Plant Service, Sagamihara, Japan.
27. Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing, China.
28. Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO, USA.
29. Tofwerk, Thun, Switzerland.