The CAMS IFS cycle 47R2 is based on ECMWF's IFS cycle 47R2 . This is a technical upgrade with a limited set of scientific contributions.
The page will be updated as required. It was last changed on 12 May 2021.
For a record of changes made to this page please refer to Document versions .
Further information and advice regarding the upgrade can be obtained from the Copernicus User Support.
The planned timetable for the implementation of the cycle 47r2 is as follows:
Date | Event |
---|---|
15 March 2021 | Announcement of expected implementation date |
18 May 2021 | Implementation |
The timetable represents current expectations and may change in light of actual progress made.
IFS cycle 47r2 is going through its final preparation phase.
The meteorological changes can be found on the ECMWF IFS CY47R2 page.
The main change which impacts CAMS is the switch to running the forecasts (but not the analysis) using single-precision arithmetic for increased computational efficiency.
Assimilation
Observations
Emissions
Other model changes
A comprehensive evaluation report of the 47r2 e-suite has been prepared documenting all the changes and their impact on the forecasts. The changes of this upgrade were evaluated with independent observations for Q1 and Q3 of 2020:
There are no new or discontinued parameters in the disseminated data compared to 47r1.
The CAMS operational FTP server (ECPDS) currently serves the most recent 3 days of test data in the directories "/DATA/CAMS_GLOBAL_TEST" and "/DATA/CAMS_EUROPE_BC_TEST" for global and regional boundary condition data, respectively. In addition, surface level fields (model level 137) are provided as individual files in the CAMS_GLOBAL_ADDITIONAL_TEST directory. Users wanting to access the output from the current test system for a longer period can access the data from 1 November 2020 onwards directly on MARS or through our WebAPI. However, please note that only the data after 5 January 2021 are based on the latest configuration. More details can be found here: Accessing CAMS 47r2 test data.
Date | Reason for update |
---|---|
19 February 2021 | Initial version |
1 March 2021 | Updated information about test data and implementation date |
12 May 2021 | Link to evaluation report |