Technical note: The CAMS greenhouse gas reanalysis from 2003 to 2020

The Copernicus Atmosphere Monitoring Service (CAMS) has recently produced a greenhouse gas reanalysis (version egg4) that covers almost 2 decades from 2003 to 2020 and which will be extended in the future. This reanalysis dataset includes carbon dioxide (CO2) and methane (CH4). The reanalysis procedure combines model data with satellite data into a globally complete and consistent dataset using the European Centre for Medium-Range Weather Forecasts' Integrated Forecasting System (IFS). This dataset has been carefully evaluated against independent observations to ensure validity and to point out deficiencies to the user. The greenhouse gas reanalysis can be used to examine the impact of atmospheric greenhouse gas concentrations on climate change (such as global and regional climate radiative forcing), assess intercontinental transport, and serve as boundary conditions for regional simulations, among other applications and scientific uses. The caveats associated with changes in assimilated observations and fixed underlying emissions are highlighted, as is their impact on the estimation of trends and annual growth rates of these long-lived greenhouse gases.

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Related Links

Related Dataset #1 : TCCON data from Anmeyondo (KR), Release GGG2014.R0

Related Dataset #2 : TCCON data from Ascension Island (SH), Release GGG2014.R0

Related Dataset #3 : TCCON data from Bialystok (PL), Release GGG2014.R1

Related Dataset #4 : TCCON data from Bremen (DE), Release GGG2014.R0

Related Dataset #5 : TCCON data from Edwards (US), Release GGG2014.R1

Related Dataset #6 : TCCON data from Garmisch (DE), Release GGG2014.R2

Related Dataset #7 : TCCON data from Izana (ES), Release GGG2014.R0

Related Dataset #8 : TCCON data from Karlsruhe (DE), Release GGG2014.R1

Related Dataset #9 : TCCON data from Lamont (US), Release GGG2014.R1

Related Dataset #10 : TCCON data from Ny Ålesund, Spitsbergen (NO), Release GGG2014.R1

Related Dataset #11 : TCCON data from Orléans (FR), Release GGG2014.R0

Related Dataset #12 : TCCON data from Paris (FR), Release GGG2014.R0

Related Dataset #13 : TCCON data from Park Falls (US), Release GGG2014.R1

Related Dataset #14 : TCCON data from Caltech (US), Release GGG2014.R1

Related Dataset #15 : TCCON data from Saga (JP), Release GGG2014.R0

Related Dataset #16 : TCCON data from Sodankylä (FI), Release GGG2014.R0

Related Dataset #17 : TCCON data from Tsukuba (JP), 125HR, Release GGG2014.R1

Related Dataset #18 : TCCON data from Four Corners (US), Release GGG2014.R0

Related Dataset #19 : TCCON data from Indianapolis (US), Release GGG2014.R1

Related Dataset #20 : TCCON data from Lauder (NZ), 120HR, Release GGG2014.R0

Related Dataset #21 : TCCON data from Lauder (NZ), 125HR, Release GGG2014.R0

Related Dataset #22 : TCCON data from Wollongong (AU), Release GGG2014.R0

Related Dataset #23 : Earth System Research Laboratory Carbon Cycle and Greenhouse Gases Group Flask-Air Sample Measurements of CO2 at Global and Regional Background Sites, 1967-Present

Related Dataset #24 : CAMS global greenhouse gas reanalysis (EGG4)

Related Dataset #25 : Multi-laboratory compilation of atmospheric methane data for the period 1957-2017; obspack_ch4_1_GLOBALVIEWplus_v1.0_2019_01_08;

Related Dataset #26 : Multi-laboratory compilation of atmospheric carbon dioxide data for the period 1957-2019; obspack_co2_1_GLOBALVIEWplus_v6.0_2020-09-11

Related Dataset #27 : Multi-laboratory compilation of atmospheric carbon dioxide data for the years 2020-2021; obspack_co2_1_NRT_v6.1_2021-02-02
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Author Agustí-Panareda, A.
Barré, Jérôme
Massart, S.
Inness, A.
Aben, I.
Ades, M.
Baier, B. C.
Balsamo, G.
Borsdorff, T.
Bousserez, N.
Boussetta, S.
Buchwitz, M.
Cantarello, L.
Crevoisier, C.
Engelen, R.
Eskes, H.
Flemming, J.
Garrigues, S.
Hasekamp, O.
Huijnen, V.
Jones, L.
Kipling, Z.
Langerock, B.
McNorton, J.
Meilhac, N.
Noël, S.
Parrington, M.
Peuch, V.
Ramonet, M.
Razinger, M.
Reuter, M.
Ribas, R.
Suttie, M.
Sweeney, C.
Tarniewicz, J.
Wu, L.
Publisher UCAR/NCAR - Library
Publication Date 2023-03-31T00:00:00
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2025-07-11T15:53:18.002548
Metadata Record Identifier edu.ucar.opensky::articles:26240
Metadata Language eng; USA
Suggested Citation Agustí-Panareda, A., Barré, Jérôme, Massart, S., Inness, A., Aben, I., Ades, M., Baier, B. C., Balsamo, G., Borsdorff, T., Bousserez, N., Boussetta, S., Buchwitz, M., Cantarello, L., Crevoisier, C., Engelen, R., Eskes, H., Flemming, J., Garrigues, S., Hasekamp, O., Huijnen, V., Jones, L., Kipling, Z., Langerock, B., McNorton, J., Meilhac, N., Noël, S., Parrington, M., Peuch, V., Ramonet, M., Razinger, M., Reuter, M., Ribas, R., Suttie, M., Sweeney, C., Tarniewicz, J., Wu, L.. (2023). Technical note: The CAMS greenhouse gas reanalysis from 2003 to 2020. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d70z777g. Accessed 22 August 2025.

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