1. Physics Department and Atmospheric Sciences Program, Michigan Technological University, Houghton, Michigan 49931, United States
2. Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento 38122, Italy
3. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
4. Earth Systems Observations, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
5. Det Norske Veritas and Germanischer Lloyd (DNV GL), 1363 Høvik, Norway
6. Institute of atmospheric sciences and climate (ISAC)-National Research Council of Italy, Bologna 40129, Italy
7. Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States