Submitted as: model description paper 31 May 2021

Submitted as: model description paper | 31 May 2021

Review status: this preprint is currently under review for the journal GMD.

A Simplified Chemistry-Dynamical Model

Hao-Jhe Hong1,2 and Thomas Reichler1 Hao-Jhe Hong and Thomas Reichler
  • 1Department of Atmospheric Sciences, University of Utah, Salt Lake City, 84112, USA
  • 2Research Center for Environmental Changes, Academia Sinica, Taipei City, 11529, Taiwan

Abstract. Recent observational and modeling studies show that variations of stratospheric ozone and the resulting interaction between ozone and the stratospheric circulation play an important role for surface weather and climate. However, in many cases computationally expensive coupled chemistry models have been used to study these effects. Here, we demonstrate how a much simpler idealized general circulation model (GCM) can be used for studying the impact of interactive stratospheric ozone on the circulation. The model, named simplified chemistry-dynamical model (SCDM), is constructed from a preexisting idealized GCM, into which a simplified linear ozone scheme and a parameterization for the shortwave radiative effects of ozone are implemented. The distribution and variability of stratospheric ozone simulated by the new model are in good agreement with the MERRA2 reanalysis, even for extreme circulation events such as Arctic stratospheric sudden warmings. The model thus represents a promising new tool for the study of ozone-circulation interaction in the stratosphere and its associated effects on tropospheric weather and climate.

Hao-Jhe Hong and Thomas Reichler

Status: open (until 05 Aug 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment regarding the Romanowsky et al., 2019 citation', Daniel Kreyling, 01 Jun 2021 reply
    • AC1: 'Reply on CC1', Hao-Jhe Hong, 10 Jun 2021 reply
  • CEC1: 'Comment on gmd-2021-149', Astrid Kerkweg, 08 Jun 2021 reply
    • AC2: 'Reply on CEC1', Hao-Jhe Hong, 10 Jun 2021 reply
  • RC1: 'Comment on gmd-2021-149', Anonymous Referee #1, 06 Jul 2021 reply
  • RC2: 'Comment on gmd-2021-149', Anonymous Referee #2, 28 Jul 2021 reply

Hao-Jhe Hong and Thomas Reichler

Model code and software

HR_SCDM Hao-Jhe Hong, Thomas Reichler

Hao-Jhe Hong and Thomas Reichler


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Short summary
The Arctic wintertime circulation of the stratosphere has pronounced impacts on the troposphere and surface climate. Changes in the stratospheric circulation can lead to either increases or decreases in Arctic ozone. Understanding the interactions between ozone and the circulation will have the benefit of model prediction for the climate. This study introduces an economical and fast simplified model that represents the realistic distribution of ozone and its interaction with the circulation.