1. Stroud Water Research Center, Avondale, PA
2. Applied Physics Laboratory, University of Washington, Seattle, WA
3. Yale School of Forestry and Environmental Studies, New Haven, CT
4. Bren School of Environmental Science and Management, University of California, Santa Barbara, CA
5. Woods Hole Oceanographic Institution, Woods Hole, MA
6. Pacific Marine Environmental Laboratory, NOAA, Seattle, WA
7. School of Geography, College of Life and Environmental Sciences, University of Exeter, Devon, UK
8. Department of Soil, Water and Climate, University of Minnesota, St Paul, MN