1. National Center for Atmospheric Research Boulder CO USA
2. Department of Earth and Environmental Sciences, Columbia University, New York, NY, USA and Lamont‐Doherty Earth Observatory of Columbia University Palisades NY USA
3. USDA Forest Service, Rocky Mountain Research Station Fort Collins CO USA
4. United Kingdom Centre for Ecology and Hydrology, Edinburgh Midlothian UK
5. The James Hutton Institute Aberdeen UK
6. Stockholm Environment Institute, Environment Department University of York York UK
7. Council of Agricultural Research and Economics, Research Centre for Forestry and Wood, and National Research Council Institute of Bioeconomy Rome Italy
8. Department of Chemistry Colorado State University Fort Collins CO USA
9. Department of Earth and Environmental Engineering Columbia University New York NY USA
10. Dipartimento di Matematica e Fisica Università Cattolica del Sacro Cuore Brescia Italy
11. Department of Earth System Science University of California Irvine CA USA
12. Institute of Alpine and Arctic Research University of Colorado Boulder Boulder CO USA
13. School of Engineering and Applied Sciences and Department of Earth and Planetary Sciences Harvard University Cambridge MA USA
14. Department of Environmental Sciences University of Virginia Charlottesville VA USA
15. U.S. Environmental Protection Agency National Exposure Research Laboratory Research Triangle Park NC USA
16. Department of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge MA USA
17. Atmospheric Chemistry Department Max Plank Institute for Chemistry Mainz Germany
18. Department of Atmospheric, Oceanic and Space Sciences University of Michigan Ann Arbor MI USA
19. Earth System Science Programme, Faculty of Science, and State Key Laboratory of Agrobiotechnology The Chinese University of Hong Kong Hong Kong