1. Department of Atmospheric and Oceanic Science; University of Maryland; College Park Maryland USA
2. Department of Physics and Joint Center for Environmental Technology; University of Maryland, Baltimore County; Baltimore Maryland USA
3. Department of Earth and Atmospheric Sciences; University of Houston; Houston Texas USA
4. Atmospheric Chemistry and Dynamics; NASA Goddard Space Flight Center; Greenbelt Maryland USA
5. Universities Space Research Association-GESTAR; Columbia Maryland USA