Preprints
https://doi.org/10.5194/egusphere-2022-283
https://doi.org/10.5194/egusphere-2022-283
18 Jul 2022
 | 18 Jul 2022

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

Anna Agusti-Panareda, Jérôme Barré, Sébastien Massart, Antje Inness, Ilse Aben, Melanie Ades, Bianca C. Baier, Gianpaolo Balsamo, Tobias Borsdorff, Nicolas Bousserez, Souhail Boussetta, Michael Buchwitz, Luca Cantarello, Cyril Crevoisier, Richard Engelen, Henk Eskes, Johannes Flemming, Sébastien Garrigues, Otto Hasekamp, Vincent Huijnen, Luke Jones, Zak Kipling, Bavo Langerock, Joe McNorton, Nicolas Meilhac, Stefan Noel, Mark Parrington, Vincent-Henri Peuch, Michel Ramonet, Miha Ratzinger, Maximilian Reuter, Roberto Ribas, Martin Suttie, Colm Sweeney, Jérôme Tarniewicz, and Lianghai Wu

Abstract. The Copernicus Atmosphere Monitoring Service has recently produced a greenhouse gases reanalysis (version egg4) that covers almost two decades from 2003 to 2020 and 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 point out deficiencies to the user. The greenhouse gas reanalysis can be used to examine the impact of atmospheric greenhouse gases concentrations on climate change, such as global and regional climate radiative forcing, assess intercontinental transport, and also serve as boundary conditions for regional simulations, among other applications and scientific studies. The caveats associated with changes in assimilated observations and fixed underlying emissions are highlighted, as well as their impact on the estimation of trends and annual growth rates of these long-lived greenhouse gases.

Anna Agusti-Panareda et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-283', Anonymous Referee #2, 09 Aug 2022
    • AC2: 'Reply on RC1', Anna Agusti-Panareda, 08 Dec 2022
  • RC2: 'Comment on egusphere-2022-283', Anonymous Referee #3, 19 Aug 2022
    • AC3: 'Reply on RC2', Anna Agusti-Panareda, 08 Dec 2022
    • AC4: 'Reply on RC2', Anna Agusti-Panareda, 08 Dec 2022
  • AC1: 'Comment on egusphere-2022-283: Reply to reviewer 1', Anna Agusti-Panareda, 08 Dec 2022

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-283', Anonymous Referee #2, 09 Aug 2022
    • AC2: 'Reply on RC1', Anna Agusti-Panareda, 08 Dec 2022
  • RC2: 'Comment on egusphere-2022-283', Anonymous Referee #3, 19 Aug 2022
    • AC3: 'Reply on RC2', Anna Agusti-Panareda, 08 Dec 2022
    • AC4: 'Reply on RC2', Anna Agusti-Panareda, 08 Dec 2022
  • AC1: 'Comment on egusphere-2022-283: Reply to reviewer 1', Anna Agusti-Panareda, 08 Dec 2022

Anna Agusti-Panareda et al.

Data sets

CAMS global greenhouse gas reanalysis (EGG4) Copernicus Atmosphere Monitoring Service https://doi.org/10.24380/8fck-9w87

Anna Agusti-Panareda et al.

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Short summary
We present a global dataset of atmospheric CO2 and CH4, the two most important human-made greenhouse gases, which covers almost two decades (2003–2020). It is produced by combining satellite data of CO2 and CH4 with a weather and air composition prediction model, and it has been carefully evaluated against independent observations to ensure validity and point out deficiencies to the user. This dataset can be used for scientific studies in the field of climate change and the global carbon cycle.