Modelling and data assimilation of reactive gases at the European Centre for Medium-Range Weather Forecasts.

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• Dr Johannes Flemming, ECMWF
• Monday 14 May 2012, 14:15-15:30
• Pfizer Lecture Theatre, Department of Chemistry.

If you have a question about this talk, please contact Dr Alex Archibald.

Forecasting and data assimilation of atmospheric composition have become important activities at ECMWF as part of the MACC project. MACC makes daily global forecasts and has produced a re-analysis of atmospheric composition (2003-2010). Both data sets are freely available and can be used for campaign support, provision of boundary conditions, climatological studies or model evaluation. We present the modelling system for reactive gases and how it is used in the assimilation of satellite observations. We will discuss the benefit of data assimilation using two examples: the forecast of the severe pollution caused by fires in Russia in 2010 and the forecast of volcanic SO₂ plumes.

This talk is part of the Centre for Atmospheric Science seminars, Chemistry Dept. series.

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