Optimization of terrestrial ecosystem model parameters using atmospheric CO2 concentration data with a global carbon assimilation system (GCAS)

Zhuoqi Chen, Beijing Normal University, College of Global Change and Earth System Science, Beijing, China, Jing Chen, University of Toronto, Geography and Planning, Toronto, ON, Canada, Shupeng Zhang, Sun Yat-Sen University, School of Atmospheric Sciences, Guangzhou, China, Xiaogu Zheng, Beijing Normal University, Beijing, China and Wei Shangguan, Beijing normal university, Beijing, China