I am generally interested in the near-term predictions of the global carbon cycle and the carbon-climate feedbacks. My major research focus is on understanding the processes in regulating variation and predictability of the global carbon cycle and climate in the context of  the Earth system. I am using large ensemble simulations based on Earth system model to disentangle the internal variability from the variability generated by anthropogenic perturbations. In the meanwhile, I pursue to improve the near-term predictions of ocean carbon uptake and relevant processes by initializing the Earth system model with observations and by improving the representation of meso-scale processes with high resolution models.