1. GEOMAR Helmholtz Centre for Ocean Research Kiel; Research Division Marine Biogeochemistry; Germany
2. Center for Earth System Research and Sustainability (CEN); University of Hamburg; Germany
3. Department of Geosciences; Penn State University; University Park Pennsylvania USA
4. Department of Engineering and Public Policy; Carnegie Mellon University; Pittsburg Pennsylvania USA
5. Department of Economics; Kiel University; Germany
6. Kiel Institute for the World Economy; Research Area The Environment and Natural Resources; Germany
7. Max Planck Institute for Meteorology; Department The Atmosphere in the Earth System; Hamburg Germany