CAMS reanalysis strengths compared to the MACC reanalysis
- Newer model cycle (CY42R1)
Higher temporal resolution
Longer 48-forecasts from 0 UTC
- Chemistry routines included in IFS
- More chemical analysis fields available
- Newer, reprocessed satellite retrievals assimilated
- Ozone and aerosols are used interactively in radiation scheme. Previously, climatologies were used
- Includes GHG in addtion to aersols and chemistry fields
CAMS reanalysis strengths compared to the CAMS interim reanalysis
- Newer model cycle (CY42R1)
Higher temporal resolution
Longer 48-forecasts from 0 UTC
- More chemical analysis fields available
- Newer, reprocessed satellite retrievals assimilated
- Ozone and aerosols are used interactively in radiation scheme. Previously, climatologies were used.
- Includes GHG in addtion to aersols and chemistry fields
Comparison table
This table highlights major differences between the MACC reanalysis, the CAMS interim reanalysis and the CAMS reanalysis. There are many additional differences, in particular changes to the computation of individual atmospheric parameters (due to the change in the assimilation system from 36r1 and 40r2 to 41r2) are not listed here.
| 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 - present | 2003 - present |
| 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 40r2/41r1 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 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 | |||
| Biomass burning emissions | |||
| Biogenic emissions | |||
| Chemistry modules | CTM MOZART3 coupled to the IFS (see Flemming et al. 2009) | ||
| Input meteorological observations | As in ERA-40 or ops?? | As in ERA5 | |
| Input atmospheric composition observations | See Inness et al 2013 and CAMS: MACC Reanalysis of global atmospheric composition (2003 - 2012) | See CAMS reanalysis data documentation | |
| New parameters | |||
| Parameters removed | |||
| Handling of accumulated parameters | Accumulated from the beginning of the forecast | Accumulated from previous post-processing | |
| Product main page | http://climate.copernicus.eu/climate-reanalysis | ||
| Technical documentation | Inness et al 2013: The MACC reanalysis: an 8 yr data set of atmospheric composition CAMS: MACC Reanalysis of global atmospheric composition (2003 - 2012) | ERA5 data documentationCAMS reanalysis data documentation | |
| Additional innovations | Long-term evolution of CO2 in RTTOV, cell-pressure correction SSU, improved bias correction for radiosondes, EDA perturbations for sea-ice cover |
