...
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
Much higher spatial and temporal resolution
Information on variation in quality over space and time
Much improved troposphere
Improved representation of tropical cyclones
Better global balance of precipitation and evaporation
Better precipitation over land in the deep tropics
Better soil moisture
- More consistent sea surface temperature and sea ice
Comparison table
This table highlights major differences between ERA-Interim and ERA5the 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 31r2 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 |
42r1 4D-Var |
Spatial resolution |
---|
80 km globally (T255), 60 levels to 0.1 hPa |
120 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 |
Hourly forecast fields, 3-hourly for the Ensemble of Data Assimilations (EDA), up to 18 hours, with reduced frequency up to 10 days (not in initial release)
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 MOZART coupled to the IFS (see Flemming et al. 2009) | Chemistry | |
Input meteorological |
observations | As in ERA-40 |
---|
ERA5 contains over 240 parameters on surface and single level alone, plus parameters on other level types. For specific parameters please compare the technical documentation linked below.
A few parameters present in ERA-Interim are not available in ERA5. For availability of specific parameters please see the technical documentation linked below.
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 |
user-support/operational-info/reanalysis-global-atmospheric-composition-2003-2012 | http://climate.copernicus.eu/climate-reanalysis | |
Technical documentation |
---|
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 |
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