Replication Data for the study on polar HCl depletionhttps://doi.org/10.26165/JUELICH-DATA/DNGQOQGrooß, Jens-UweJülich DATA2025-06-162025-06-24T09:14:16ZThis data set is part of the study by Grooß et al. (2025). In this study, a discrepancy between model simulations and observations of HCl in the dark polar stratosphere (see here) is further investigated. Adding futher reactions to the standard model chemistry, especially the heterogeneous reaction of chlorine peroxide (Cl2O2) with hydrogen chloride (HCl) helps reducing this reported discrepancy significantly.Earth and Environmental SciencesGrooß, J.-U., Rolf Müller, John N. Crowley Michaela I. Hegglin Chlorine peroxide reaction explains observed wintertime hydrogen chloride in the Antarctic vortex, Comm. Earth&Env, doi:10.1038/s43247-025-02499-4, 2025Grooß, Jens-Uwe2025-06-13CC0CC0 Waiver