Regional evaluation of the performance of the global CAMS chemical modeling system over the United States (IFS cycle 47r1)

The Copernicus Atmosphere Monitoring Service (CAMS) provides routine analyses and forecasts of trace gases and aerosols on a global scale. The core is the European Centre for Medium Range Weather Forecasts (ECMWF) Integrated Forecast System (IFS), where modules for atmospheric chemistry and aerosols...

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Bibliographic Details
Published in:Geoscientific Model Development 2022-06, Vol.15 (12), p.4657-4687
Main Authors: Williams, Jason E, Huijnen, Vincent, Bouarar, Idir, Meziane, Mehdi, Schreurs, Timo, Pelletier, Sophie, Marécal, Virginie, Josse, Beatrice, Flemming, Johannes
Format: Article
Language:English
Subjects:
Aerosols
Air quality
Air quality management
Annual cycles
Annual variations
Atmospheric chemistry
Atmospheric models
Atmospheric monitoring
Bias
Composition
Data assimilation
Data collection
Emissions
Environmental Sciences
Evaluation
Forecasting
Gases
Global aerosols
Mathematical models
Modelling
Modules
Nitrogen compounds
Nitrogen dioxide
Nitrogen oxides
Performance evaluation
Pollutants
Regions
Stratospheric chemistry
Trace gases
Troposphere
Tropospheric composition
Uncertainty
VOCs
Volatile organic compounds
Weather
Weather forecasting
Winter
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Summary:The Copernicus Atmosphere Monitoring Service (CAMS) provides routine analyses and forecasts of trace gases and aerosols on a global scale. The core is the European Centre for Medium Range Weather Forecasts (ECMWF) Integrated Forecast System (IFS), where modules for atmospheric chemistry and aerosols have been introduced and which allows for data assimilation of satellite retrievals of composition. In summary, this study has indicated that the chemically induced differences in the quality of CAMS forecast products over the United States depends on season, trace gas, altitude and region. While analysis of the three chemistry modules in CAMS provide a strong handle on uncertainties associated with chemistry modeling, the further improvement of operational products additionally requires coordinated development involving emissions handling, chemistry and aerosol modeling, complemented with data-assimilation efforts.
ISSN:1991-9603
1991-959X
1991-962X
1991-9603
1991-962X
1991-959X
DOI:10.5194/gmd-15-4657-2022