1. Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843-3150, USA
2. Argonne National Laboratory, Lemont, IL 60439, USA
3. National Center for Atmospheric Research, Boulder, CO 80301, USA
4. Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242, USA
5. Science Systems and Applications Inc., Hampton, VA 23666, USA
6. NASA Langley Research Center, Hampton, VA 23666, USA