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| Titel |
Tropospheric chemistry in the Integrated Forecasting System of ECMWF |
| VerfasserIn |
J. Flemming, V. Huijnen, J. Arteta, P. Bechtold, A. Beljaars, A.-M. Blechschmidt, M. Diamantakis, R. J. Engelen, A. Gaudel, A. Inness, L. Jones, B. Josse, E. Katragkou, V. Marecal, V.-H. Peuch, A. Richter, M. G. Schultz, O. Stein, A. Tsikerdekis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 4 ; Nr. 8, no. 4 (2015-04-07), S.975-1003 |
| Datensatznummer |
250116274
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| Publikation (Nr.) |
 copernicus.org/gmd-8-975-2015.pdf |
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| Zusammenfassung |
| A representation of atmospheric chemistry has been included in the Integrated
Forecasting System (IFS) of the European Centre for Medium-Range Weather
Forecasts (ECMWF). The new chemistry modules complement the aerosol modules
of the IFS for atmospheric composition, which is named C-IFS. C-IFS for
chemistry supersedes a coupled system in which chemical transport model (CTM)
Model for OZone and Related chemical Tracers 3 was two-way coupled to the IFS
(IFS-MOZART). This paper contains a description of the new on-line
implementation, an evaluation with observations and a comparison of the
performance of C-IFS with MOZART and with a re-analysis of atmospheric
composition produced by IFS-MOZART within the Monitoring Atmospheric
Composition and Climate (MACC) project. The chemical mechanism of C-IFS is an
extended version of the Carbon Bond 2005 (CB05) chemical mechanism as
implemented in CTM Transport Model 5 (TM5). CB05 describes tropospheric
chemistry with 54 species and 126 reactions. Wet deposition and lightning
nitrogen monoxide (NO) emissions are modelled in C-IFS using the detailed
input of the IFS physics package. A 1 year simulation by C-IFS, MOZART and
the MACC re-analysis is evaluated against ozonesondes, carbon monoxide (CO)
aircraft profiles, European surface observations of ozone (O3), CO,
sulfur dioxide (SO2) and nitrogen dioxide (NO2) as well as
satellite retrievals of CO, tropospheric NO2 and formaldehyde.
Anthropogenic emissions from the MACC/CityZen (MACCity) inventory and biomass
burning emissions from the Global Fire Assimilation System (GFAS) data set
were used in the simulations by both C-IFS and MOZART. C-IFS (CB05) showed an
improved performance with respect to MOZART for CO, upper tropospheric
O3, and wintertime SO2, and was of a similar accuracy for other
evaluated species. C-IFS (CB05) is about 10 times more computationally
efficient than IFS-MOZART. |
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