1. Department of Chemistry and Biochemistry and Geophysical Institute University of Alaska, Fairbanks Fairbanks AK USA
2. Universities Space Research Association Columbia MD USA
3. Goddard Space Flight Center NASA Global Modeling and Assimilation Office Greenbelt MD USA
4. School of Energy and Environment City University of Hong Kong Hong Kong China
5. Department of Meteorology and Atmospheric Science Pennsylvania State University University Park PA USA