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The page will be updated as required. It was last changed on 11 October 202123 February 2022.
For a record of changes made to this page please refer to Document versions .
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Date | Event |
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TBC | Announcement of expected implementation date |
12 Oct 2021 | Implementation |
22 Feb 2022 | A fix of low-level T/q in fog conditions was introduced with the 12 UTC cycle on 22 Feb 2022. |
The timetable represents current expectations and may change in light of actual progress made.
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For most compounds, the quality of the e-suite is very comparable to the o-suite. A substantial decrease in sulphate aerosol optical depth and an increase in sea salt aerosol optical depth are observed in the e-suite compared to the o-suite, and biases in aerosol properties (optical depth and size distribution) have improved. The impact of the assimilation of NO2 seems to be rather modest, and the performance of e-suite and o-suite is therefore similar. For CO the NDACC comparisons indicate increased negative biases and decreased correlations for high latitudes in the Northern Hemisphere, while other observations show little change. There are some indications that the upgrade of moist physics and related changes in convection influence the tracer distributions (e.g., CO profiles).
In summary, two improvements and a small degradation are reported for the e-suite compared to the o-suite. No major degradation was observed for any specific species or region. The scorecard below summarises the results. A comprehensive evaluation report of the 47r3 e-suite will be made available closer to the implementation date, documenting all the changes and their impact on the forecasts, is available from the CAMS website.
Technical details of the new cycle
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GRIB 2 Section 1 Octets | ecCodes key | Master Tables Version Number | |
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47r2 | 47r3 | ||
10 | tablesVersion | 5 | 27 28 from March 2022 |
All users are encouraged to check their data processing with the test data provided.
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Date | Reason for update |
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1 July 2021 | Initial version |
9 July 2021 | ecCodes version requirement noted |
20 August 2021 | Access to test data |
2 September 2021 | Implementation date postpone by 1 week to 12 October 2021 |
4 October 2021 | Recommendation to use ecCodes version 2.23.0 with cycle 47r3 and highlight of a change in the GRIB 2 encoding |
11 October 2021 | Main conclusions from external evaluation of the upgrade |
23 February | Implementation of a fix of low-level T/q in fog conditions |