Articles | Volume 19, issue 19 
            
                
                    
                    
                        
            
            
            https://doi.org/10.5194/acp-19-12361-2019
                    © Author(s) 2019. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
Special issue:
                        
                    https://doi.org/10.5194/acp-19-12361-2019
                    © Author(s) 2019. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
Contrasting effects of CO2 fertilization, land-use change and warming on seasonal amplitude of Northern Hemisphere CO2 exchange
                                            Department of Geography, Ludwig-Maximilians-Universität, Luisenstr. 37, 80333, Munich, Germany
                                        
                                    Philippe Ciais
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    Frédéric Chevallier
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    Christian Rödenbeck
                                            Max Planck Institute for Biogeochemistry, 07745, Jena, Germany
                                        
                                    Ashley P. Ballantyne
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    
                                            Department of Ecosystem and Conservation Sciences, University of Montana, Missoula, Montana 59812, USA
                                        
                                    Fabienne Maignan
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    
                                            Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
                                        
                                    Marcos Fernández-Martínez
                                            Centre of Excellence PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium
                                        
                                    Pierre Friedlingstein
                                            College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
                                        
                                    Josep Peñuelas
                                            CSIC, Global Ecology Unit CREAF–CEAB–UAB, Bellaterra, 08193, Catalonia, Spain
                                        
                                    
                                            CREAF, Cerdanyola del Vallès, 08193, Catalonia, Spain
                                        
                                    Shilong L. Piao
                                            Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China
                                        
                                    Stephen Sitch
                                            College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4RJ, UK
                                        
                                    William K. Smith
                                            School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721, USA
                                        
                                    Xuhui Wang
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    Zaichun Zhu
                                            School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China
                                        
                                    Vanessa Haverd
                                            CSIRO Oceans and Atmosphere, Canberra, 2601, Australia
                                        
                                    Etsushi Kato
                                            Institute of Applied Energy (IAE), Minato, Tokyo 105-0003, Japan
                                        
                                    Atul K. Jain
                                            Department of Atmospheric Sciences, University of Illinois, Urbana, IL 61801, USA
                                        
                                    Sebastian Lienert
                                            Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research,
University of Bern, Bern 3012, Switzerland
                                        
                                    Danica Lombardozzi
                                            Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80302, USA
                                        
                                    Julia E. M. S. Nabel
                                            Max Planck Institute for Meteorology, 20146 Hamburg, Germany
                                        
                                    Philippe Peylin
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    Benjamin Poulter
                                            Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20816, USA
                                        
                                    Dan Zhu
                                            Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
                                        
                                    Data sets
Atmospheric CO2 Inversion, 1985-2016 C. Rödenbeck https://doi.org/10.17871/CarboScope-s85_v4.1
Atmospheric CO2 Inversion, 1976-2016 C. Rödenbeck https://doi.org/10.17871/CarboScope-s76_v4.1
Atmospheric CO2 Inversion, 1993-2016 C. Rödenbeck https://doi.org/10.17871/CarboScope-s93_v4.1
Short summary
                    Here we show that land-surface models improved their ability to simulate the increase in the amplitude of seasonal CO2-cycle exchange (SCANBP) by ecosystems compared to estimates by two atmospheric inversions. We find a dominant role of vegetation growth over boreal Eurasia to the observed increase in SCANBP, strongly driven by CO2 fertilization, and an overall negative effect of temperature on SCANBP. Biases can be explained by the sensitivity of simulated microbial respiration to temperature.
                    Here we show that land-surface models improved their ability to simulate the increase in the...
                    
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