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Volume 8, issue 11 | Copyright

Special issue: Monitoring atmospheric composition and climate, research in...

Geosci. Model Dev., 8, 3523-3543, 2015
https://doi.org/10.5194/gmd-8-3523-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Methods for assessment of models 04 Nov 2015

Methods for assessment of models | 04 Nov 2015

Validation of reactive gases and aerosols in the MACC global analysis and forecast system

H. Eskes1, V. Huijnen1, A. Arola2, A. Benedictow3, A.-M. Blechschmidt4, E. Botek5, O. Boucher6, I. Bouarar7, S. Chabrillat5, E. Cuevas8, R. Engelen11, H. Flentje9, A. Gaudel10, J. Griesfeller3, L. Jones11, J. Kapsomenakis12, E. Katragkou13, S. Kinne7, B. Langerock5, M. Razinger11, A. Richter4, M. Schultz14, M. Schulz3, N. Sudarchikova7, V. Thouret10, M. Vrekoussis12,15, A. Wagner9, and C. Zerefos12 H. Eskes et al.
  • 1Royal Netherlands Meteorological Institute, De Bilt, the Netherlands
  • 2Finnish Meteorological Institute, Helsinki, Finland
  • 3Norwegian Meteorological Institute, Oslo, Norway
  • 4Institute of Environmental Physics, University of Bremen, Bremen, Germany
  • 5Belgian Institute for Space Aeronomy, BIRA-IASB, Brussels, 1180, Belgium
  • 6Laboratoire de Météorologie Dynamique, IPSL/CNRS, Université Pierre et Marie Curie, Paris, France
  • 7Max Planck Institute for Meteorology, Hamburg, Germany
  • 8Izaña Atmospheric Research Center, AEMET, S/C Tenerife, Spain
  • 9Deutscher Wetterdienst, Meteorologisches Observatorium Hohenpeissenberg, Hohenpeissenberg, Germany
  • 10CNRS and Université Paul Sabatier, Laboratoire d'Aérologie, Toulouse, France
  • 11European Centre for Medium-Range Weather Forecasts, Reading, UK
  • 12Academy of Athens, Athens, Greece
  • 13Department of Meteorology and Climatology, School of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece
  • 14Institute for Energy and Climate Research, Forschungszentrum Jülich, Jülich, Germany
  • 15EEWRC, The Cyprus Institute, Nicosia, Cyprus

Abstract. The European MACC (Monitoring Atmospheric Composition and Climate) project is preparing the operational Copernicus Atmosphere Monitoring Service (CAMS), one of the services of the European Copernicus Programme on Earth observation and environmental services. MACC uses data assimilation to combine in situ and remote sensing observations with global and regional models of atmospheric reactive gases, aerosols, and greenhouse gases, and is based on the Integrated Forecasting System of the European Centre for Medium-Range Weather Forecasts (ECMWF). The global component of the MACC service has a dedicated validation activity to document the quality of the atmospheric composition products. In this paper we discuss the approach to validation that has been developed over the past 3 years. Topics discussed are the validation requirements, the operational aspects, the measurement data sets used, the structure of the validation reports, the models and assimilation systems validated, the procedure to introduce new upgrades, and the scoring methods. One specific target of the MACC system concerns forecasting special events with high-pollution concentrations. Such events receive extra attention in the validation process. Finally, a summary is provided of the results from the validation of the latest set of daily global analysis and forecast products from the MACC system reported in November 2014.

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The MACC project is preparing the operational atmosphere service of the European Copernicus Programme, and uses data assimilation to combine atmospheric models with available observations. Our paper provides an overview of the aerosol and trace gas validation activity of MACC. Topics are the validation requirements, the measurement data, the assimilation systems, the upgrade procedure, operational aspects and the scoring methods. A summary is provided of recent results, including special events.
The MACC project is preparing the operational atmosphere service of the European Copernicus...
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