Zhu, L., Ciais, P., Bastos, A., Ballantyne, A. P., Chevallier, F., Gasser, T., Kondo, M., Pongratz, J., Rödenbeck, C., & Li, W. (2021). Decadal variability in land carbon sink efficiency. Carbon Balance and Management, 16:. doi:10.1186/s13021-021-00178-3.