1. Department of Meteorology and Atmospheric ScienceThe Pennsylvania State UniversityUniversity ParkPAUSA
2. Earth and Environmental Systems Institute, The Pennsylvania State UniversityUniversity ParkPAUSA
3. Pacific Northwest National LaboratoryAtmospheric Sciences and Global Change DivisionRichlandWAUSA
4. Institute of Arctic and Alpine ResearchUniversity of ColoradoBoulderCOUSA
5. Department of Environmental Health and EngineeringJohns Hopkins UniversityBaltimoreUK
6. Deutsches Zentrum für Luft‐ und Raumfahrt e.V.Institut für Physik der AtmosphäreOberpfaffenhofenGermany