1. Atmospheric Science; Colorado State University; Fort Collins Colorado USA
2. Natural Resources Ecology Laboratory; Colorado State University; Fort Collins Colorado USA
3. Department of Earth System Science, Ecology, and Evolutionary Biology; University of California; Irvine California USA
4. Atmospheric Sciences Research Center; State University of New York; Albany New York USA
5. Instituto de Astronomica, Geofisica e Ciencias Atmosfericas; Universidade de São Paulo; São Paulo Brazil