OpenIFS/AC: atmospheric chemistry and aerosol in OpenIFS 43r3
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Published:2022-08-11
Issue:15
Volume:15
Page:6221-6241
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ISSN:1991-9603
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Container-title:Geoscientific Model Development
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language:en
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Short-container-title:Geosci. Model Dev.
Author:
Huijnen VincentORCID, Le Sager Philippe, Köhler Marcus O.ORCID, Carver GlennORCID, Rémy Samuel, Flemming JohannesORCID, Chabrillat SimonORCID, Errera Quentin, van Noije TwanORCID
Abstract
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. OpenIFS is a portable
version of ECMWF's global numerical weather prediction model. 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 with the modified CB05 tropospheric chemistry scheme, the bulk bin tropospheric aerosol module, and the option to use Belgian Assimilation System for Chemical ObsErvations (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.
Funder
Koninklijk Nederlands Meteorologisch Instituut
Publisher
Copernicus GmbH
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