The additional chemical species from the coupled MOZART model are available upon request from the ECMWF ECFS archive (contact Copernicus User Support) in NetCDF format. Those with MARS access may directly retrieve the data from MARS (class=mc, expver=rean) for all analysed species as well as the meteorology. The MACC reanalysis data can be downloaded from the ECMWF Data Server or via WebAPI.

MACC data can be searched through the CAMS Catalogue (select 'Global reanalyses' in the 'Product Family' section). MACC data is open access (under licence) and free to download. How to access MACC Reanalysis data and charts/maps? We are aware of several quality issues with MACC reanalysis data (see known issues section below). (2013) also lists which atmospheric composition data sets were assimilated in the MACC reanalysis. The output of the reanalysis has been validated by the MACC-II VAL sub-project and the latest information is available in a validation report.Īn open-access journal article describing the chemistry part of the MACC reanalysis is available from Atmospheric Chemistry and Physics (Inness et al. Additional reactive gases species are available from the coupled chemistry transport model MOZART. The system includes a 4-dimensional variational analysis (4D-Var) with a 12-hour analysis window and provides analysis fields of atmospheric composition species, namely ozone (O3), carbon monoxide (CO), nitrogen oxides (NOx), SO2, formaldehyde (HCHO), and aerosols, in addition to meteorological fields.

The chemistry transport model MOZART (Model for OZone And Related chemical Tracers) was coupled to the IFS to provide initial fields and chemical production and loss rates for the reactive gases (Flemming et al. This data assimilation system is based on a 2010 release of the Integrated Forecast System (IFS) (C圓6r1). The MACC Reanalysis was constructed by assimilating satellite data into a global model and data assimilation system. The spatial resolution of the data set is approximately 80 km (T255 spectral) on 60 vertical levels from the surface up to 0.1 hPa for the analysed species and 1.125° by 1.125° at the same 60 levels for the other chemical species. The dataset spans the period 2003 to 2012. The Monitoring Atmospheric Composition and Climate (MACC) Reanalysis is a global reanalysis data set of atmospheric composition (AC), made available by the Copernicus Atmosphere Monitoring Service (CAMS).

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