R H Moss1,2, P M Reed3, A Hadjimichael3, J Rozenberg4. 1. Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park MD, USA. rmoss@princeton.edu. 2. Andlinger Center for Energy and Environment, Princeton University, Princeton NJ, USA. 3. School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, USA. 4. World Bank, Washington, DC, USA.