TY - JOUR A1 - Han, R. A1 - Tian, X. T1 - A dual-pass carbon cycle data assimilation system to estimate surface CO2 fluxes and 3D atmospheric CO2 concentrations from spaceborne measurements of atmospheric CO2 JO - Geosci. Model Dev. Discuss. J1 - GMDD VL - 2019 SP - 1 EP - 29 Y1 - 2019/05/13 PB - Copernicus Publications SN - 1991-962X UR - https://gmd.copernicus.org/preprints/gmd-2019-54/ L1 - https://gmd.copernicus.org/preprints/gmd-2019-54/gmd-2019-54.pdf DO - 10.5194/gmd-2019-54 ER -