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Global CO2 gridded flux fields from 16 atmospheric inversions in GCB2026

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1976-01-01–2025-12-31
11676/cTiyyHSEPCuUAU53j2qBWAaN (link)

In this file, we include the data from the GCB2026 inversions on 1x1 degrees latitude-longitude. The variables include the prior and posterior land biosphere and ocean carbon fluxes. The land biosphere fluxes have been adjusted to a common fossil fuel emissions dataset (land_flux_only_fossil_cement_adjusted). This allows the inverse estimates to be compared to each other within this ensemble. In this case, we apply a fossil fuel and cement adjustment to account for minor remaining differences to GridFED v2026_0 (this GridFED version includes emissions from cement production and a sink from cement carbonation). For a comparison with bottom-up flux estimates, further adjustments need to be made, for the lateral fluxes, specifically rivers and the natural steady state flux for the ocean. To compute S_land as presented in GCB2026, the river adjustment needs to be added to the inverse land flux: S_land = -(flux_land + river_adjustment_land_scaled). To compute S_ocean as presented in GCB2026, the river adjustment needs to be added, while the natural steady state flux needs to be subtracted: S_ocean = -(flux_ocean + river_adjustment_ocean - natural_ss_ocean). Correct application of this procedure should result in: S_ocean,global = 3.1 PgC/year ; S_land,global = 1.5 PgC/year ; S_ocean,[-90S,-30S] = 1.2 PgC/year. Note that positive fluxes in this file are into the atmosphere, while positive S_land and S_ocean fluxes are into land/ocean (hence the sign switch).

1976-01-01 00:00:00
2025-12-31 23:59:59
monthly
Naus, S., Peters, W., van der Woude, A., Hooghiem, J., Luijkx, I., Rödenbeck, C., Chevallier, F., Martinez, A., Niwa, Y., Maity, S., Jacobson, A.R., Liu, J., Bowman, K., Yun, J., Bloom, A., Jin, Z., Tian, X., Piao, S., Wang, Y., Zhang, H., Zhao, M., Wang, T., Ding, J., Liu, Z., Zeng, N., Jiang, F., Ju, W., Feng, L., Palmer, P., Maksyutov, S., Nayagam, L., Janardanan, R., Kong, Y., Zheng, B., Qiu, Y. (2026). Global CO2 gridded flux fields from 16 atmospheric inversions in GCB2026, 1976-01-01–2025-12-31, https://hdl.handle.net/11676/cTiyyHSEPCuUAU53j2qBWAaN
BibTex
@misc{https://hdl.handle.net/11676/cTiyyHSEPCuUAU53j2qBWAaN,
  author={Naus, Stijn and Peters, Wouter and van der Woude, Auke and Hooghiem, Joram and Luijkx, Ingrid and Rödenbeck, Christian and Chevallier, Frédéric and Martinez, Adrien and Niwa, Yosuke and Maity, Suman and Jacobson, Andrew R. and Liu, Junjie and Bowman, Kevin and Yun, Jeongmin and Bloom, Anthony and Jin, Zhe and Tian, Xiangjun and Piao, Shilong and Wang, Yilong and Zhang, Hongqin and Zhao, Min and Wang, Tao and Ding, Jinzhi and Liu, Zhiqiang and Zeng, Ning and Jiang, Fei and Ju, Weimin and Feng, Liang and Palmer, Paul and Maksyutov, Shamil and Nayagam, Lorna and Janardanan, Rajesh and Kong, Yawen and Zheng, Bo and Qiu, Yumou},
  title={Global CO2 gridded flux fields from 16 atmospheric inversions in GCB2026, 1976-01-01–2025-12-31},
  year={2026},
  note={In this file, we include the data from the GCB2026 inversions on 1x1 degrees latitude-longitude. 
The variables include the prior and posterior land biosphere and ocean carbon fluxes. 
The land biosphere fluxes have been adjusted to a common fossil fuel emissions dataset (land_flux_only_fossil_cement_adjusted). This allows the inverse estimates to be compared to each other within this ensemble. In this case, we apply a fossil fuel and cement adjustment to account for minor remaining differences to GridFED v2026_0 (this GridFED version includes emissions from cement production and a sink from cement carbonation). 
For a comparison with bottom-up flux estimates, further adjustments need to be made, for the lateral fluxes, specifically rivers and the natural steady state flux for the ocean. 
To compute S_land as presented in GCB2026, the river adjustment needs to be added to the inverse land flux: S_land = -(flux_land + river_adjustment_land_scaled).
To compute S_ocean as presented in GCB2026, the river adjustment needs to be added, while the natural steady state flux needs to be subtracted: S_ocean = -(flux_ocean + river_adjustment_ocean - natural_ss_ocean).
Correct application of this procedure should result in: S_ocean,global = 3.1 PgC/year ; S_land,global = 1.5 PgC/year ; S_ocean,[-90S,-30S] = 1.2 PgC/year.
Note that positive fluxes in this file are into the atmosphere, while positive S_land and S_ocean fluxes are into land/ocean (hence the sign switch).},
  keywords={GCB2026, atmospheric, CO2, global, inversions, land carbon flux, ocean carbon flux},
  url={https://hdl.handle.net/11676/cTiyyHSEPCuUAU53j2qBWAaN},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/cTiyyHSEPCuUAU53j2qBWAaN}
}
RIS
TY - DATA
T1 - Global CO2 gridded flux fields from 16 atmospheric inversions in GCB2026, 1976-01-01–2025-12-31
ID - 11676/cTiyyHSEPCuUAU53j2qBWAaN
PY - 2026
AB - In this file, we include the data from the GCB2026 inversions on 1x1 degrees latitude-longitude. 
The variables include the prior and posterior land biosphere and ocean carbon fluxes. 
The land biosphere fluxes have been adjusted to a common fossil fuel emissions dataset (land_flux_only_fossil_cement_adjusted). This allows the inverse estimates to be compared to each other within this ensemble. In this case, we apply a fossil fuel and cement adjustment to account for minor remaining differences to GridFED v2026_0 (this GridFED version includes emissions from cement production and a sink from cement carbonation). 
For a comparison with bottom-up flux estimates, further adjustments need to be made, for the lateral fluxes, specifically rivers and the natural steady state flux for the ocean. 
To compute S_land as presented in GCB2026, the river adjustment needs to be added to the inverse land flux: S_land = -(flux_land + river_adjustment_land_scaled).
To compute S_ocean as presented in GCB2026, the river adjustment needs to be added, while the natural steady state flux needs to be subtracted: S_ocean = -(flux_ocean + river_adjustment_ocean - natural_ss_ocean).
Correct application of this procedure should result in: S_ocean,global = 3.1 PgC/year ; S_land,global = 1.5 PgC/year ; S_ocean,[-90S,-30S] = 1.2 PgC/year.
Note that positive fluxes in this file are into the atmosphere, while positive S_land and S_ocean fluxes are into land/ocean (hence the sign switch).
UR - https://hdl.handle.net/11676/cTiyyHSEPCuUAU53j2qBWAaN
PB - Carbon Portal
AU - Naus, Stijn
AU - Peters, Wouter
AU - van der Woude, Auke
AU - Hooghiem, Joram
AU - Luijkx, Ingrid
AU - Rödenbeck, Christian
AU - Chevallier, Frédéric
AU - Martinez, Adrien
AU - Niwa, Yosuke
AU - Maity, Suman
AU - Jacobson, Andrew R.
AU - Liu, Junjie
AU - Bowman, Kevin
AU - Yun, Jeongmin
AU - Bloom, Anthony
AU - Jin, Zhe
AU - Tian, Xiangjun
AU - Piao, Shilong
AU - Wang, Yilong
AU - Zhang, Hongqin
AU - Zhao, Min
AU - Wang, Tao
AU - Ding, Jinzhi
AU - Liu, Zhiqiang
AU - Zeng, Ning
AU - Jiang, Fei
AU - Ju, Weimin
AU - Feng, Liang
AU - Palmer, Paul
AU - Maksyutov, Shamil
AU - Nayagam, Lorna
AU - Janardanan, Rajesh
AU - Kong, Yawen
AU - Zheng, Bo
AU - Qiu, Yumou
KW - GCB2026
KW - atmospheric
KW - CO2
KW - global
KW - inversions
KW - land carbon flux
KW - ocean carbon flux
ER - 
GCP2026_inversions_1x1_version1_0_20261103.nc
5 GB (5112782833 bytes)
3

Production

2026-11-03 10:00:00

Previewable variables

Name Value type Unit Quantity kind Preview
land_flux_only_fossil_cement_adjusted land CO2 flux PgC m-2 yr-1 mass flux Preview
ocean_flux_NOT_adjusted ocean CO2 flux PgC m-2 yr-1 mass flux Preview
prior_flux_land land CO2 flux PgC m-2 yr-1 mass flux Preview
prior_flux_ocean ocean CO2 flux PgC m-2 yr-1 mass flux Preview
fossil_fuel_emissions fossil fuel CO2 flux PgC m-2 yr-1 mass flux Preview

Statistics

28
38

Submission

2026-11-03 13:29:31
2026-11-03 13:19:20

Technical information

7138b2c874843c2b94014e778f6a8158068d4e6ffa9432381ce8e1b19b7ab089
cTiyyHSEPCuUAU53j2qBWAaNTm/6lDI4HOjhsZt6sIk
S: -89.5, W: -179.5, N: 89.5, E: 179.5
CO2 GCB2026 atmospheric carbon flux global inversions land carbon flux ocean carbon flux