Preprints
https://doi.org/10.5194/gmd-2022-80
https://doi.org/10.5194/gmd-2022-80
Submitted as: model description paper
12 Apr 2022
Submitted as: model description paper | 12 Apr 2022
Status: this preprint is currently under review for the journal GMD.

OpenIFS/AC: atmospheric chemistry and aerosol in OpenIFS 43r3

Vincent Huijnen1, Philippe Le Sager1, Marcus O. Köhler2, Glenn Carver2, Samuel Rémy3, Johannes Flemming2, Simon Chabrillat4, Quentin Errera4, and Twan van Noije1 Vincent Huijnen et al.
  • 1Royal Netherlands Meteorological Institute, De Bilt, The Netherlands
  • 2ECMWF, Shinfield Park, Reading, UK
  • 3HYGEOS, Lille, France
  • 4Royal Belgian Institute for Space Aeronomy, BIRA-IASB, 1080 Brussels, Belgium

Abstract. In this paper, we report on the first implementation of atmospheric chemistry and aerosol as part of the European Centre for Medium-Range Weather Forecasts (ECMWF) OpenIFS model. For this, modules and input data for model cycle CY43R3, which have been developed as part of the Copernicus Atmosphere Monitoring Service (CAMS), have been ported to OpenIFS: the modified CB05 tropospheric chemistry scheme, the AER bulk-bin tropospheric aerosol module, as well as the option to use BASCOE-based stratospheric ozone chemistry. We give an overview of the model, and describe the datasets used for emissions and dry deposition, which are similar to those used in the model configuration applied to create the CAMS Reanalysis. We evaluate two reference model configurations with and without the stratospheric chemistry extension against standard observational datasets for tropospheric ozone, surface carbon monoxide (CO), tropospheric nitrogen dioxide (NO2) and aerosol optical depth. The results give basic confidence in the model implementation and configuration. This OpenIFS version with atmospheric composition components is open to the scientific user community under a standard OpenIFS license.

Vincent Huijnen et al.

Status: open (until 07 Jun 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2022-80', Anonymous Referee #1, 11 May 2022 reply

Vincent Huijnen et al.

Vincent Huijnen et al.

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Short summary
We report on the first implementation of atmospheric chemistry and aerosol as part of the OpenIFS model, based on the CAMS global model. We give an overview of the model and evaluate two reference model configurations with and without the stratospheric chemistry extension, against a variety of observational datasets. This OpenIFS version with atmospheric composition components is open to the scientific user community under a standard OpenIFS license.