Five decades of northern land carbon uptake revealed by the interhemispheric CO2 gradient
P. Ciais1,2*, J. Tan2 , X. Wang2 , C. Roedenbeck3, F. Chevallier1 , S.-L. Piao2,4, R. Moriarty5, G. Broquet1 , C. Le Quéré5, J. G. Canadell6, S. Peng2 , B. Poulter7 , Z. Liu5,8,9 & P. Tans
Nature
https://www.nature.com/articles/s41586-019-1078-6.pdf
They used two-box model and atmospheric CO2 data to investigate the land sinks over two hemispheres over the last five decades.











