Model Data Sets for the study on polar HCl depletion
Introduction
This data repository provides access to the model data 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.
CLaMS simulations and observations for HCl, averaged in equivalent latitude and potential temperature.
Image: from Fig. 2 of Grooß et al., 2025.
Data access
The data sets provided on this web site are saved. For the model descriptions, the meaning of the sensitivity simulations and all other details, we refer to Grooß et al. (2025).
The file format is NetCDF that is described here . The filenames for equvalent-latitude/potential temperature averages are given as eqlat_avg_clams_2011_(run).nc. The filenames for the box-chemistry-model runs are given as chem_vr2_11050112_11110112_(sensitivity).nc. This dataset has been pulished under doi:10.26165/JUELICH-DATA/DNGQOQ. Note that these are non-operational research data products, which have been made available to other scientists and the general public.
Legal notes
The data sets provided on this site are licensed under a Creative Commons Attribution 4.0 International License. You are free to share the material in any medium or format and adapt it for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits. The licensor cannot revoke these freedoms as long as you follow the license terms. The data are distributed in the hope that it will be useful, but without any warranty. Please follow the link to see the terms and conditions of the license:
We kindly ask to contact the authors, if you use these data.
Reference
Citation, if the data are used in publications:
Grooß, J.-U., R. Müller, J.N Crowley, M.I. Hegglin, Chlorine peroxide reaction explains observed wintertime hydrogen chloride depletion in the Antarctic vortex, Comm. Earth&Env,, doi:10.1038/s43247-025-02499-4, 2025.
Contact
Please do not hesitate to contact us if you have any further questions:
Dr. Jens-Uwe Grooß
Forschungszentrum Jülich
Institute of Climate and Energy Systems - Stratosphere (ICE-4)
52425 Jülich
Germany
e-mail: j.-u.grooss@fz-juelich.de
