CEDS - Community Earth-atmosphere Data System for Historical Surface Fluxes
The CEDS project is an open-source framework (written in R), providing global emissions data.
Releases of the CEDS dataset
v_2025_03_18
LatestReleased: March 18, 2025
Citation: Hoesly, R., Smith, S. J., Ahsan, H., Prime, N., O'Rourke, P., Crippa, M., Klimont, Z., Guizzardi, D., Feng, L., Harkins, C., MCDONALD, B., & Wang, S. (2025). CEDS v_2025_03_18 Aggregate Data (v_2025_03_18) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15059443
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, N₂O, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2023
- Update to latest IEA and Energy Institute energy consumption data
- Update default emissions data to EDGAR v8.1 (air pollutants to 2012), EDGAR_2024_GHG (CH4, N2O to 2023), latest FAO (agriculture CH4 and N2O * to 2022), Andrew (CO2 cement to 2024)
- Updated inventory data for Australia, Canada, EMEP, UNFCCC (Annex I GHGs), Japan and Korea via HTAPv3.1, and United States
- Updated BOCOC scaling via EDGAR for USA, Canada, and larger European and Asian countries for road and building emissions
- Update to latest OMI/TropOMI composite SO2 point source catalog (through 2022)
- Update coal sulfur content and sulfur control in Asia
- Adjust historical EF extension to increase low BC/OC EFs to match premodern SPEW values
- Correct errant Russian flaring values
- Numerous country and sector-specific updates
Released: July 24, 2024
Citation: Hoesly, R., Smith, S. J., Prime, N., Ahsan, H., Suchyta, H., O'Rourke, P., Crippa, M., Klimont, Z., Guizzardi, D., Behrendt, J., Feng, L., Harkins, C., McDonald, B., Mott, A., McDuffie, A., Nicholson, M., & Wang, S. (2024). CEDS v_2024_07_08 Release Emission Data (v_2024_07_08) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.12803197
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, N₂O, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2022
- Corrected a historical GBR SO2 discontinuity before 1850 in smelting SO2 emissions
- Other small historical corrections to smelting SO2 before 1850
- Small corrections to historical NOx and NH3 emissions
Released: April 1, 2024
Citation: Hoesly, R., & Smith, S. (2024). CEDS v_2024_04_01 Release Emission Data (v_2024_04_01) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10904361
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, N₂O, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2022
- Update default emissions data to EDGAR v6 (air pollutants to 2018), EDGAR v8 (CH4, N2O to 2022), latest FAO (agriculture CH4 and N2O to 2020), Andrew (CO2 cement to 2022)
- Updated inventory scaling for Argentina, Australia, Canada, EMEP, Korea, Taiwan, UNFCCC (Annex I GHGs), and United States
- Update to latest OMI/TropOMI composite SO2 point source catalog (through 2022)
- Improved flaring emissions extension over recent years using flaring volumes and additional data flaring emissions time series
- Improved recent year extension of liquid fuel consumption
- Update shipping fuel sulfur and incorporate new international S content agreements (IMO), adjusted for non-compliance; shipping activity data updated
- Sectoral detail added for metal processing sectors (3 new sectors)
- Additional detail in emissions, now released by fuel, country, and sector
- Numerous country and sector-specific updates
Released: April 6, 2021
Citation: O'Rourke, P. R., Smith, S. J., Mott, A., Ahsan, H., McDuffie, E. E., Crippa, M., Klimont, Z., McDonald, B., Wang, S., Nicholson, M. B., Feng, L., & Hoesly, R. M. (2021). CEDS v_2021_04_21 Release Emission Data (v_2021_02_05) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.4741285
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, N₂O, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2019
- Updated inventory scaling for Australia, Canada, South Korea, and Taiwan. Emissions did not change for any other isos.
- Updated proxy data for gridding to EDGAR 5.0 emission grids. BC and OC gridding proxies also now from EDGAR. Gridding proxies for most sectors vary over time following EDGAR spatial distributions within each iso out to 2015.
- Added a set of line plots for selected cells as a diagnostic of gridding routine function (Examples in Feng et al. 2020)
- Added capability to produce gridded emissions without emissions from one selected iso
Released: February 5, 2021
Citation: O'Rourke, P. R., Smith, S. J., Mott, A., Ahsan, H., McDuffie, E. E., Crippa, M., Klimont, Z., McDonald, B., Wang, S., Nicholson, M. B., Feng, L., & Hoesly, R. M. (2021). CEDS v_2021_02_05 Release Emission Data (v_2021_02_05) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.4509372
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, N₂O, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2019
- UNFCCC Annex I (CH4, N2O, CO2), Australia, and South Korea emission inventory data
- Scaling mappings and methods for improved consistency over time
- Historical USA energy time series and sectoral split
- Improved BC/OC industrial emissions in China
- Lower residential biomass consumption for Ethiopia and Nigeria based on UN data
- Added BC/OC from fossil fuel fires from EDGAR
- BC/OC emissions from road sector now scaled to most country inventories
- Updated satellite estimates of SO2 from petroleum processes
- Various data and code updates
Released: September 11, 2020
Citation: O'Rourke, P. R., Smith, S. J., McDuffie, E. E., Klimont, Z., Crippa, M., Mott, A., Wang, S., Nicholson, M. B., Feng, L., & Hoesly, R. M. (2020). CEDS v_2020_09_11 Pre-Release Emission Data (v_2020_09_11) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.4025316
Countries/regions: 220 and international transport.
Coverage: CO, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2019
- Updated to use IEA energy statistics out to 2017
- Extended time series to 2019 using BP energy statistics
- Updated default combustion emission factors to ECLIPSE V5a
- Updated default emissions to EDGAR v5
- Updated country-level emission inventories for Europe, USA, Canada, China, and Taiwan.
- Default emissions for China incorporate changes in coke production (Xu et al. 2019) and cement technologies (Hua et al. 2016) over time.
- Corrected heavy oil CO2 emissions factor (lowering CO2 emissions) (issue 22)
- Update shipping emissions to IMOGHGv4 emission factors and fuel consumption.
- Aircraft EF updated to EDGAR v5
- Canada and USA now include agricultural NOx emissions (fixes issue #17 )
- USA NMVOC discontinuity removed (issue 26)
- Updated default time series for smelting SO2 emissions
Released: January 13, 2020
Citation: Hoesly, R. M., O'Rourke, P. R., Smith, S. J., Feng, L., Klimont, Z., Janssens-Maenhout, G., Pitkanen, T., Seibert, J. J., Vu, L., Andres, R. J., Bolt, R. M., Bond, T. C., Dawidowski, L., Kholod, N., Kurokawa, J.-. ichi ., Li, M., Liu, L., Lu, Z., Moura, M. C. P., Zhang, Q., Goldstein, B., Muwan, P. (2020). CEDS v_2019_12_23 Emission Data (v_2019_12_23) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3606753
Countries/regions: 221 and international transport.
Coverage: CO₂, CO, CH₄, NH₃, NOx, NMVOC, BC, OC
Years: 1750 – 2014
- Fixed accounting of global shipping fuel consumption (this is largely fixing a bias introduced in a previous pre-release. However, in current version, some shipping emissions before the IEA data period are shifted from international shipping to domestic navigation. This does not substantially impact total emissions, but will impact the spatial distribution as compared to the CMIP6 data release.)
- Corrections to addition of EIA historical coal consumption data for the USA
- Corrections to addition of historical coal consumption data for Germany
- Negative energy consumption data from historical UN statistics removed
- Metadata tracking within the system now correctly removes duplicate entries
- Users providing CEDS with total fuel consumption for a country can now choose if international shipping bunkers are included or not
- Users providing CEDS with fuel consumption for a country can now choose if data should be normalized to CEDS default values or not after inclusion
- Updated waste emissions calculation with fix to code and more realistic developed country urban burnt percentage parameter
- Improved consistency of Korea BC and OC emissions with Korea national inventory addressing, in part, issue 5
Released: August 2, 2018
Citation: Hoesly, R. M., Smith, S. J., Feng, L., Klimont, Z., Janssens-Maenhout, G., Pitkanen, T., Seibert, J. J., Vu, L., Andres, R. J., Bolt, R. M., Bond, T. C., Dawidowski, L., Kholod, N., Kurokawa, J.-I., Li, M., Liu, L., Lu, Z., Moura, M. C. P., O'Rourke, P. R., and Zhang, Q.: Historical (1750–2014) anthropogenic emissions of reactive gases and aerosols from the Community Emissions Data System (CEDS), Geosci. Model Dev., 11, 369-408, , 2018. https://doi.org/10.5194/gmd-11-369-2018
Countries/regions: 220 and international transport.
Coverage: CO₂, CO, CH₄, NH₃, NOx, SO₂, NMVOC, BC, OC
Years: 1750 – 2014
- The corrected supplement contains adds additional data files for CO2, CH4 and CH4 extension
- Aggregate regions are now broken out to individual countries/regions/islands in all emissions files by country and all emission files by sector and country











