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| MACC reanalysis | CAMS interim reanalysis | CAMS reanalysis | |
|---|---|---|---|
| Exp ID | exp=rean, class=mc | exp=eac3, class=mc | exp=eac4, class=mc |
| Period covered | 2003 - 2012 | 2003 - 2018 | 2003 - present (though only 2003 - June Dec 2022) |
| Production Period | March 2010 – Feb 2012 | Dec 2014-Dec 2016, then continued in NRT | Jan 2017 – Dec 2018, then continued in near real-time |
| Assimilation system | IFS Cycle 36r1 4D-Var | IFS Cycle 40r2 (2003-2015) 4D-Var IFS Cycle 41r1 (2016 - ... ) 4D-Var | IFS Cycle 42r1 4D-Var |
| Spatial resolution | 80 km globally (T255), 60 levels to 0.1 hPa | 110 km globally (T159), 60 levels to 0.1 hPa | 80 km globally (T255), 60 levels to 0.1 hPa |
| Output frequency (temporal resolution) | 6-hourly analysis fields 3-hourly forecast fields from 0 UTC up to 24 hours | 6-hourly analysis fields 3-hourly forecast fields from 6 and 18 UTC up to 12 hours | 3-hourly analysis fields 3-hourly forecast fields from 0 UTC up to 48 hours 1-hourly surface forecast fields from 0 UTZ up to 48 hours |
| Anthropogenic missions | Chemistry species: MACCity (trend: ACCMIP + RCP8.5), Aerosols: AEROCOM | MACCity (trend: ACCMIP + RCP8.5) & CO emission upgrade Stein et al. (2014) for chemistry and aerosols | MACCity (trend: ACCMIP + RCP8.5) & CO emission upgrade Stein et al. (2014) |
| Biomass burning emissions | GFED (2003–2008) and GFAS v0 (2009–2012 ) | GFAS v 1.2 | GFAS v 1.2 |
| Biogenic emissions | Monthly mean VOC emissions for the year 2003 calculated by the MEGAN2.1 model (Guenther et al., 2006) used for the whole period. No interannual variability. | Monthly mean VOC emissions calculated by the MEGAN2.1 model (Guenther et al., 2006) using MERRA reanalysed meteorology (Sindelarova et al., 2014) for the period 2003-2010. For the remaining years 2011–2017 aclimatology data set of the MEGAN-MACC data was put together. | Monthly mean VOC emissions calculated by the MEGAN model using MERRA reanalysed meteorology (Sindelarova et al., 2014) for the whole period. |
| Chemistry modules | CTM MOZART3 coupled to the IFS (see Flemming et al. 2009) | IFS CB05 (Flemming et al. 2015) & Cariolle ozone parametrisation in stratosphere | IFS CB05 (Flemming et al. 2015, with updates as given in CAMS: Reanalysis data documentation) & Cariolle ozone parametrisation in stratosphere |
| Aerosol modules | Mocrette et al. (2009) | Mocrette et al. (2009) plus changes described in Flemming et al. (2017) | See CAMS: Reanalysis data documentation |
| Input meteorological observations | OPS (stream=DA) | OPS (stream=DCDA) | As in ERA5 (2003-2016?) OPS for later years |
| Input atmospheric composition observations | See Inness et al 2013 and MACC: Reanalysis of global atmospheric composition (2003 - 2012) | See Flemming et al. 2017 | See CAMS reanalysis data documentation |
| Aerosol used in radiation scheme | Tegen climatology | Tegen climatology | Interactive active aerosols, i.e. aerosol fields from eac4 used in radiation scheme |
| Ozone used in radiation scheme | GEMS climatology | GEMS climatology (2003-2015) MACC climatology (2016 - ...) | Interactive ozone, i.e. ozone field from eac4 used in radiation scheme |
| Parameters | Aerosol fields and CO, HCHO, NO2, O3, SO2 available from MARS, additional chemistry fields from MOZART CTM available as netcdf fields on request | Aerosol fields and a limited number of chemistry fields available from MARS. | Full chemistry outputarchived as type=an every 3 hours (see parameter lists on CAMS: Reanalysis data documentation) |
| Stratospheric chemistry | Yes | No, but Cariolle ozone parametrisation in stratosphere and stratospheric O3 available. | No, but Cariolle ozone parametrisation in stratosphere and stratospheric O3 available. |
| Product main page | contact Copernicus Helpdesk | CAMS: Reanalysis data documentation | |
| Technical documentation | Inness et al 2013: The MACC reanalysis: an 8 yr data set of atmospheric composition MACC: Reanalysis of global atmospheric composition (2003 - 2012) | Flemming et al. 2017: The CAMS interim Reanalysis of Carbon Monoxide, Ozone and Aerosol for 2003–2015 | CAMS: Reanalysis data documentation |
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