1. NASA Ames Research Center Moffett Field CA USA
2. Spec, Inc. Boulder CO USA
3. Chemical Sciences Division NOAA Earth System Research Laboratory (ESRL) Boulder CO USA
4. Cooperative Institute for Research in Environmental Science Boulder CO USA
5. NASA Langley Research Center Hampton VA USA
6. National Center for Atmospheric Research Boulder CO USA
7. Department of Atmospheric and Oceanic Sciences and Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA