1. D. W. Fahey, E. R. Keim, S. Solomon, K. K. Kelly, Aeronomy Laboratory, National Oceanic and Atmospheric Administration (NOAA), Boulder, CO 80303, USA.
2. K. A. Boering, B. C. Daube, S. C. Wofsy, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA.
3. C. A. Brock, J. C. Wilson, H. H. Jonsson, Department of Engineering, University of Denver, Denver, CO 80208, USA.
4. S. Anthony, Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado, Boulder, CO 80309, USA.
5. T. F. Hanisco and P. O. Wennberg, Department of Chemistry, Harvard University, Cambridge, MA 02138, USA.
6. R. C. Miake-Lye, Aerodyne Research, Billerica, MA 01821, USA.
7. R. J. Salawitch, C. R. Webster, R. D. May, Jet Propulsion Laboratory, Pasadena, CA 91109, USA.
8. N. Louisnard, Office National d'Études et de Recherches Aerospatiales (ONERA), Paris, France.
9. E. L. Woodbridge, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093, USA.
10. R. S. Gao, S. G. Donnelly, R. C. Wamsley, L. A. Del Negro, NOAA Aeronomy Laboratory, Boulder, CO 80303, and CIRES, University of Colorado, Boulder, CO 80309, USA.
11. M. Loewenstein, J. R. Podolske, K. R. Chan, National Aeronautics and Space Administration (NASA) Ames Research Center, Moffett Field, CA 94035, USA.