1. School of Engineering and Applied Sciences and Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
2. Atmospheric and Environmental Research, Inc., Lexington, Massachusetts 02421, United States
3. Sigma Space Corporation, Lanham, Maryland 20706, United States
4. Department of Atmospheric and Oceanic Sciences, University of Maryland, College Park, Maryland 20742, United States
5. Department of Earth and Environment, Boston University, Boston, Massachusetts 02215, United States