Constraints on High Northern Photosynthesis Increase Using Earth System Models and a Set of Independent Observations

Alexander J Winkler, Max Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany, Victor Brovkin, Max Planck Institute for Meteorology, Hamburg, Germany, Ranga Myneni, Boston University, Earth and Environment, Boston, MA, United States and Georgii Alexandrov, A.M.Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia