Sierra, C., Ceballos-Núñez, V., Hartmann, H., Herrera-Ramirez, D., & Metzler, H. (2022). Ideas and perspectives: Allocation of carbon from net primary production in models is inconsistent with observations of the age of respired carbon. Biogeosciences, 19(16), 3727-3738. doi:10.5194/bg-19-3727-2022.