1. Department of Chemical and Environmental Engineering; University of Arizona; Tucson AZ USA
2. Department of Hydrology and Atmospheric Sciences; University of Arizona; Tucson AZ USA
3. Science Systems and Applications, Inc.; Hampton VA USA
4. NASA Langley Research Center; Hampton VA USA
5. Cooperative Institute for Research in Environmental Sciences; University of Colorado; Boulder CO USA
6. Department of Chemistry and Biochemistry; University of Colorado; Boulder CO USA