1. Atmospheric Sciences Program Michigan Technological University Houghton Michigan USA
2. Department of Physics Michigan Technological University Houghton Michigan USA
3. Department of Meteorology Naval Postgraduate School Monterey California USA
4. U.S. EPA Research Triangle Park North Carolina USA
5. Department of Chemistry Michigan Technological University Houghton Michigan USA
6. Now at Department of Biotechnology University of Rijeka Rijeka Croatia
7. Department of Agricultural Sciences University of Azores Angra do Heroísmo Portugal
8. Department of Civil and Environmental Engineering Michigan Technological University Houghton Michigan USA
9. Institute of Alpine and Arctic Research University of Colorado Boulder Colorado USA