Model Data Sets for the study on HCl discrepancy
Introduction
This data repository provides access to the model data of the study by Grooß et al. (2018). In this study, a discrepancy between model simulations and observations of HCl in the dark polar stratosphere is investigated. In early winter, the less-well studied period of the onset of chlorine activation, observations show here a much faster depletion of HCl than simulations of 3 established models:
- the Chemical Lagrangian Model of the Stratosphere (CLaMS)
- the Whole Atmosphere Community Climate Model in specified dynamics mode (SD-WACCM)
- the model TOMCAT-SLIMCAT in specified dynamics mode
The shown discrepancy points to some unknown process that seems currently to be not represented in the models. Various hypotheses for potential causes are investigated that partly reduce the discrepancy. Here the results are stored averaged within equivalent latitude/potential temperature bins for all shown sensitivity runs and for all models. Equivalent latitude spacing is chosen to be 20 bins of equal area between 50 and 90 degrees.
CLaMS simulation for HCl, averaged in equivalent latitude and potential temperature.
Image: Fig. 13 of Grooß et al., Atmos. Chem. Phys., 2018.
Data access
The data sets provided on this web site are saved for three models CLaMS, TOMCAT/SLIMCAT and SD-WACCM including all shown sensitivity simulations. For the model descriptions, the meaning of the sensitivity simulations and all other details, we refer to Grooß et al. (2018).
The file format is NetCDF that is described here . The filenames are given as eqlat_avg_(model)_(year)_(hemisphere)_(sensitivity).nc. 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, R. Spang, I. Tritscher, T. Wegner, M. P. Chipperfield, W. Feng, D. E. Kinnison, and S. Madronich, On the discrepancy of HCl processing in the core of the wintertime polar vortices, Atmos. Chem. Phys., 18, 8647-8666, doi:10.5194/acp-18-8647-2018, 2018.
Contact
Please do not hesitate to contact us if you have any further questions:
Dr. Jens-Uwe Grooß
Forschungszentrum Jülich
Institut für Energie- und Klimaforschung, IEK-7
52425 Jülich
Germany
e-mail: j.-u.grooss@fz-juelich.de
