@Article{egusphere-2026-1995,
AUTHOR = {Br\'eon, F.-M. and Chevallier, F. and Ramonet, M.},
TITLE = {A climatological description of atmospheric CO$_2$ concentrations},
JOURNAL = {EGUsphere},
VOLUME = {2026},
YEAR = {2026},
PAGES = {1--20},
URL = {https://egusphere.copernicus.org/preprints/2026/egusphere-2026-1995/},
DOI = {10.5194/egusphere-2026-1995}
}