Articles | Volume 18, issue 5
https://doi.org/10.5194/gmd-18-1505-2025
https://doi.org/10.5194/gmd-18-1505-2025
Development and technical paper
 | 
10 Mar 2025
Development and technical paper |  | 10 Mar 2025

Improving the ensemble square root filter (EnSRF) in the Community Inversion Framework: a case study with ICON-ART 2024.01

Joël Thanwerdas, Antoine Berchet, Lionel Constantin, Aki Tsuruta, Michael Steiner, Friedemann Reum, Stephan Henne, and Dominik Brunner

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Cited articles

Anderson, J. L.: An Ensemble Adjustment Kalman Filter for Data Assimilation, Mon. Weather Rev., 129, 2884–2903, https://doi.org/10.1175/1520-0493(2001)129<2884:AEAKFF>2.0.CO;2, 2001. a
Berchet, A., Sollum, E., Thompson, R. L., Pison, I., Thanwerdas, J., Broquet, G., Chevallier, F., Aalto, T., Berchet, A., Bergamaschi, P., Brunner, D., Engelen, R., Fortems-Cheiney, A., Gerbig, C., Groot Zwaaftink, C. D., Haussaire, J.-M., Henne, S., Houweling, S., Karstens, U., Kutsch, W. L., Luijkx, I. T., Monteil, G., Palmer, P. I., van Peet, J. C. A., Peters, W., Peylin, P., Potier, E., Rödenbeck, C., Saunois, M., Scholze, M., Tsuruta, A., and Zhao, Y.: The Community Inversion Framework v1.0: a unified system for atmospheric inversion studies, Geosci. Model Dev., 14, 5331–5354, https://doi.org/10.5194/gmd-14-5331-2021, 2021. a
Berchet, A., Sollum, E., Pison, I., Thompson, R. L., Thanwerdas, J., Fortems-Cheiney, A., Peet, J. C. A. V., Potier, E., Chevallier, F., Broquet, G., and Berchet, A.: The Community Inversion Framework: codes and documentation, Zenodo [code], https://doi.org/10.5281/zenodo.12742377, 2022. a
Berchet, A., Thanwerdas, J., Reum, F., Elias, E., and Broquet, G.: D5.3 Quantification of transport errors and database of optimized fluxes and simulations for an ensemble of models and inversion set-up|CoCO2: Prototype system for a Copernicus CO2 service, https://coco2-project.eu/sites/default/files/2023-11/CoCO2-D5-3-V0.1.pdf (last access: 15 January 2025), 2023. a, b, c, d
Berchet, A., Pison, I., Thanwerdas, J., Reum, F., Elias, E., Chevallier, F., Fortems-Cheiney, A., Peylin, P., Bastrikov, V., Saunois, M., Tsuruta, A., and Martinez, A.: Input data for running forward simulations of CO2 atmospheric concentrations over Europe for the year 2019, Zenodo [data set], https://doi.org/10.5281/zenodo.12609041, 2024. a
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Short summary
The Community Inversion Framework (CIF) brings together methods for estimating greenhouse gas fluxes from atmospheric observations. The initial ensemble method implemented in CIF was found to be incomplete and could hardly be compared to other ensemble methods employed in the inversion community. In this paper, we present and evaluate a new implementation of the ensemble mode, building upon the initial developments.
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