Preprints
https://doi.org/10.5194/gmd-2022-13
https://doi.org/10.5194/gmd-2022-13
Submitted as: development and technical paper
04 Apr 2022
Submitted as: development and technical paper | 04 Apr 2022
Status: this preprint is currently under review for the journal GMD.

Transport parameterization of the Polar SWIFT model (version 2)

Ingo Wohltmann and Daniel Kreyling Ingo Wohltmann and Daniel Kreyling
  • Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany

Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in General Circulation Models (GCMs) and Earth System Models (ESMs) to enable the simulation of interactions between the ozone layer and climate, when a full stratospheric chemistry scheme is computationally too expensive. Many GCMs do not include a usable general scheme for the transport and mixing of chemical species in the stratosphere. When using the Polar SWIFT model in a GCM, it is usually necessary to parameterize the transport of ozone in order to obtain the total change of ozone as the sum of the change by transport and by chemistry. We present a transport parameterization for the Polar SWIFT model that simulates the change of vortex-averaged ozone by transport in a fast and simple way without the need for a complex transport scheme in the GCM.

Ingo Wohltmann and Daniel Kreyling

Status: open (until 31 May 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Ingo Wohltmann and Daniel Kreyling

Model code and software

ATLAS Chemistry and Transport Model Code Repository Ingo Wohltmann https://gitlab.awi.de/iwohltmann/atlas

Matlab scripts used for this work, including stand-alone models of transport parameterization and SWIFT Ingo Wohltmann https://doi.org/10.5281/zenodo.5834222

Ingo Wohltmann and Daniel Kreyling

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Short summary
The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter intended for use in General Circulation Models (GCMs). We present a transport parameterization for the Polar SWIFT model that simulates the change of vortex-averaged ozone by transport in a fast and simple way without the need for a complex transport scheme in the GCM.