An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF
<p>An aerosol climatology to represent aerosols in the radiation schemes of global atmospheric models was recently developed. We derived the climatology from a reanalysis of atmospheric composition produced by the Copernicus Atmosphere Monitoring Service (CAMS). As an example of an application...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-03-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://www.geosci-model-dev.net/13/1007/2020/gmd-13-1007-2020.pdf |
| _version_ | 1818280329363849216 |
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| author | A. Bozzo A. Bozzo A. Benedetti J. Flemming Z. Kipling S. Rémy S. Rémy |
| author_facet | A. Bozzo A. Bozzo A. Benedetti J. Flemming Z. Kipling S. Rémy S. Rémy |
| author_sort | A. Bozzo |
| collection | DOAJ |
| description | <p>An aerosol climatology to represent aerosols in the radiation schemes of global atmospheric models was recently developed. We derived the climatology from a reanalysis of atmospheric composition produced by the Copernicus Atmosphere Monitoring Service (CAMS). As an example of an application in a global atmospheric model, we discuss the technical aspects of the implementation in the European Centre for Medium Range Weather Forecasts Integrated Forecasting System (ECMWF-IFS) and the impact of the new climatology on the medium-range weather forecasts and 1-year simulations.
The new aerosol climatology was derived by combining a set of model simulations with constrained meteorological conditions and an atmospheric composition reanalysis for the period 2003–2013 produced by the IFS. The aerosol fields of the reanalysis are constrained by assimilating the aerosol optical thickness (AOT) retrievals product by the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments. In a further step, we used modelled aerosol fields to correct the aerosol speciation and the vertical profiles of the aerosol reanalysis fields. The new climatology provides the monthly-mean mass mixing ratio of five aerosol species constrained by assimilated MODIS AOT.
Using the new climatology in the ECMWF-IFS leads to changes in the direct aerosol radiative effect compared to the climatology previously implemented, which have a small but non-impact on the forecast skill of large-scale weather patterns in the medium-range. However, details of the regional distribution of aerosol radiative forcing can have a large local impact. This is the case for the area of the Arabian Peninsula and the northern Indian Ocean. Here changes in the radiative forcing of the mineral dust significantly improve the summer monsoon circulation.</p> |
| first_indexed | 2024-12-12T23:47:30Z |
| format | Article |
| id | doaj.art-adeb8aaad5fb4bf3951f09f60b9b1c8c |
| institution | Directory Open Access Journal |
| issn | 1991-959X 1991-9603 |
| language | English |
| last_indexed | 2024-12-12T23:47:30Z |
| publishDate | 2020-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj.art-adeb8aaad5fb4bf3951f09f60b9b1c8c2022-12-22T00:06:49ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032020-03-01131007103410.5194/gmd-13-1007-2020An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWFA. Bozzo0A. Bozzo1A. Benedetti2J. Flemming3Z. Kipling4S. Rémy5S. Rémy6European Centre for Medium-Range Weather Forecasts, Reading, UKnow at: European Organisation for the Exploitation of Meteorological Satellites, Darmstadt, GermanyEuropean Centre for Medium-Range Weather Forecasts, Reading, UKEuropean Centre for Medium-Range Weather Forecasts, Reading, UKEuropean Centre for Medium-Range Weather Forecasts, Reading, UKEuropean Centre for Medium-Range Weather Forecasts, Reading, UKInstitute Pierre-Simon Laplace, Sorbonne Université/CNRS, Paris, France<p>An aerosol climatology to represent aerosols in the radiation schemes of global atmospheric models was recently developed. We derived the climatology from a reanalysis of atmospheric composition produced by the Copernicus Atmosphere Monitoring Service (CAMS). As an example of an application in a global atmospheric model, we discuss the technical aspects of the implementation in the European Centre for Medium Range Weather Forecasts Integrated Forecasting System (ECMWF-IFS) and the impact of the new climatology on the medium-range weather forecasts and 1-year simulations. The new aerosol climatology was derived by combining a set of model simulations with constrained meteorological conditions and an atmospheric composition reanalysis for the period 2003–2013 produced by the IFS. The aerosol fields of the reanalysis are constrained by assimilating the aerosol optical thickness (AOT) retrievals product by the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments. In a further step, we used modelled aerosol fields to correct the aerosol speciation and the vertical profiles of the aerosol reanalysis fields. The new climatology provides the monthly-mean mass mixing ratio of five aerosol species constrained by assimilated MODIS AOT. Using the new climatology in the ECMWF-IFS leads to changes in the direct aerosol radiative effect compared to the climatology previously implemented, which have a small but non-impact on the forecast skill of large-scale weather patterns in the medium-range. However, details of the regional distribution of aerosol radiative forcing can have a large local impact. This is the case for the area of the Arabian Peninsula and the northern Indian Ocean. Here changes in the radiative forcing of the mineral dust significantly improve the summer monsoon circulation.</p>https://www.geosci-model-dev.net/13/1007/2020/gmd-13-1007-2020.pdf |
| spellingShingle | A. Bozzo A. Bozzo A. Benedetti J. Flemming Z. Kipling S. Rémy S. Rémy An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF Geoscientific Model Development |
| title | An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF |
| title_full | An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF |
| title_fullStr | An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF |
| title_full_unstemmed | An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF |
| title_short | An aerosol climatology for global models based on the tropospheric aerosol scheme in the Integrated Forecasting System of ECMWF |
| title_sort | aerosol climatology for global models based on the tropospheric aerosol scheme in the integrated forecasting system of ecmwf |
| url | https://www.geosci-model-dev.net/13/1007/2020/gmd-13-1007-2020.pdf |
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