1. Atmospheric Science BranchNASA Ames Research Center Moffett Field California USA
2. Chemical Sciences DivisionNOAA Earth System Research Laboratory Boulder Colorado USA
3. Cooperative Institute for Research in Environmental SciencesUniversity of Colorado Boulder Boulder Colorado USA
4. Chemistry and Dynamics BranchNASA Langley research Center Hampton Virginia USA
5. Global Monitoring DivisionNOAA Earth System Research Laboratory Boulder Colorado USA
6. SPEC, Inc. Boulder Colorado USA
7. Northwest Research Associates Seattle Washington USA
8. School of Engineering and Applied SciencesHarvard University Cambridge Massachusetts USA