1. Nicholas School of the Environment; Duke University; Box 90328 Durham NC 27708 USA
2. Department of Civil and Environmental Engineering; Duke University; Box 90287 Durham NC 27708 USA
3. Department of Civil, Construction, and Environmental Engineering; Marquette University; Milwaukee WI 53233 USA
4. Warnell School of Forestry and Natural Resources; University of Georgia; Athens GA 30602 USA
5. Bordeaux Sciences Agro; UMR INRA-ISPA 1391; 33195 Gradignan France
6. Department of Earth System Science; Woods Institute for the Environment and Precourt Institute for Energy; Stanford University; Y2E2 Building, 379B Stanford CA 94305 USA
7. Department of Civil and Environmental Engineering and Princeton Environmental Institute; Princeton University; Princeton NJ 08544 USA