1. Atmospheric Chemistry and Dynamics Laboratory; NASA Goddard Space Flight Center; Greenbelt Maryland USA
2. NOAA Earth System Research Laboratory; Boulder Colorado USA
3. Cooperative Institute for Research in Environmental Sciences; University of Colorado and NOAA Earth System Research Laboratory; Boulder Colorado USA
4. National Center for Atmospheric Research; Boulder Colorado USA
5. Earth Sciences Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
6. Science Systems and Applications Inc.; Lanham Maryland USA
7. NOAA Air Resources Laboratory; NOAA Center for Weather and Climate Prediction; College Park Maryland USA
8. Atmospheric Chemistry Observations and Modeling Laboratory; National Center for Atmospheric Research; Boulder Colorado USA
9. Meteorologisches Institut; Ludwig-Maximilians-Universität München; Munich Germany
10. Office of Research and Development; U.S. Environmental Protection Agency; Research Triangle Park North Carolina USA
11. Joint Center for Earth Systems Technology; Baltimore Maryland USA
12. Department of Atmospheric Physics; University of Maryland, Baltimore County; Baltimore Maryland USA