1 Centre for Energy and Environmental Economics, Energy Planning Program, CENERGIA/PPE/COPPE/UFRJ, Centro de Tecnologia, Bloco C, Sala C-211, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ 21941-914 Brazil.
2 Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC), Lecce, Italy.
3 Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany.
4 International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria.