1. Program in Environmental Sciences Northwestern University Evanston IL USA
2. Environmental Defense Fund Austin TX USA
3. Department of Earth and Planetary Sciences and Institute for Sustainability and Energy Northwestern University Evanston IL USA
4. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder NOAA/Global Systems Laboratory Boulder CO USA
5. Department of Environmental Health Boston University School of Public Health Boston MA USA
6. NOAA Geophysical Fluid Dynamics Laboratory Princeton NJ USA