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The planned timetable for the implementation of the cycle 46r1 is as follows:
| Date | Event |
|---|---|
| January 2019 | Initial announcement |
| 26 February and 07 March 2019 | Live-streamed seminar 1 |
| 15 May 2019 | Availability of test data in dissemination |
| 15 May and 16 May 2019 | Live-streamed seminar 2 |
| 11 June 2019 | Expected date of implementation |
The timetable represents current expectations and may change in light of actual progress made.
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The GRIB model identifiers (generating process identification number) for cycle 46r1 will be changed as follows:
| GRIB 1 Section 1 Octets | GRIB 2 Section 4 Octets | eccodes key | Component | Model ID | |
|---|---|---|---|---|---|
| Old | New | ||||
| 6 | 14 | generatingProcessIdentifier | Atmospheric model | 149 | 150 |
| Ocean wave model | 114 | 115 | |||
| HRES-SAW ( HRES stand alone ocean wave model) | 214 | 215 | |||
Sea Surface Temperature
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With the new IFS cycle 46r1, the ecCodes key "localDefinitionNumber" for the Sea Surface Temperature (SST) analyses at 00Z and 12Z will be changed from 17 to 1, both in dissemination and in MARS. With this change, all SST and Sea Ice fields for the analyses and Forecasts will be harmonised. |
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Extended output have been added in cycle 46r1, including a subset of ocean fields on the atmospheric grid.
| paramId | shortName | name | Description | units | GRIB edition | Components | Test data available | Dissemination | ecCharts | Added to the Catalogue |
|---|---|---|---|---|---|---|---|---|---|---|
Near-surface wind output | ||||||||||
| 228239 | 200u | 200 metre U wind component | eastward component of the 200m wind. | m s-1 | 1 | HRES / ENS |  | TBC | TBC | |
| 228240 | 200v | 200 metre V wind component | northward component of the 200m wind. | m s-1 | 1 | HRES / ENS | | TBC | TBC | |
| Wave model parameters | ||||||||||
| 140098 | weta | Wave induced mean sea level correction | Wave induced mean sea level correction | m | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140099 | wraf | Ratio of wave angular and frequency width | Ratio of wave angular and frequency width | dimensionless | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | TBC |
| 140100 | wnslc | Number of events in freak waves statistics | Number of events in freak waves statistics | dimensionless | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140101 | utaua | U-component of atmospheric surface momentum flux | U-component of atmospheric surface momentum flux | N m-2 | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140102 | vtaua | V-component of atmospheric surface momentum flux | V-component of atmospheric surface momentum flux | N m-2 | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140103 | utauo | U-component of surface momentum flux into ocean | U-component of surface momentum flux into ocean | N m-2 | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140104 | vtauo | V-component of surface momentum flux into ocean | V-component of surface momentum flux into ocean | N m-2 | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | |
| 140105 | wphio | Wave turbulent energy flux into ocean | Wave turbulent energy flux into ocean | W m-2 | 1 | HRES-WAM / HRES-SAW / ENS-WAM | | TBC | TBC | TBC |
| Ocean parameters available at the surface, produced by the NEMO model. | ||||||||||
| 174098 | sithick | Sea-ice thickness * | Sea-ice thickness | m | 1 | HRES / ENS | | TBC | TBC | |
| 151148 | mld | Mixed layer depth * | Mixed layer depth | m | 1 | HRES / ENS | | |||
| 151145 | zos | Sea surface height * | Sea surface height | m | 1 | HRES / ENS | | |||
| 151163 | t20d | Depth of 20C isotherm * | Depth of 20C isotherm | m | 1 | HRES / ENS | | |||
| 151130 | so | Sea water practical salinity * | Sea water practical salinity | psu | 1 | HRES / ENS | | |||
| 151164 | tav300 | Average potential temperature in the upper 300m * | Average potential temperature in the upper 300m | degrees C | 1 | HRES / ENS | | |||
| 151175 | sav300 | Average salinity in the upper 300m * | Average salinity in the upper 300m | psu | 1 | HRES / ENS | | |||
| * All fields are masked on land and lake points. tav300 and sav300 are masked on ocean points with depth < 300m. | ||||||||||
| Parameters on Potential Vorticity levels (1.5 and 2 PVU) | ||||||||||
| 129 | z | Geopotential | This parameter is the gravitational potential energy of a unit mass, at a particular location, relative to mean sea level. | m2 s-2 | 1 | HRES / ENS * | | TBC | TBC | |
| 203 | o3 | Ozone mass mixing ratio | This parameter is the mass of ozone per kilogram of air. | kg kg-1 | 1 | HRES / ENS * | | TBC | TBC | |
| 3 | pt | Potential Temperature | Potential Temperature | K | 1 | HRES / ENS * | | TBC | TBC | |
| 54 | pres | Pressure | Pressure | Pa | 1 | HRES / ENS * | | TBC | TBC | |
| 133 | q | Specific humidity | This parameter is the mass of water vapour per kilogram of moist air. | kg kg-1 | 1 | HRES / ENS * | | TBC | TBC | |
| 131 | u | U component of wind | This parameter is the eastward component of the wind. It is the horizontal speed of air moving towards the east, in metres per second. A negative sign thus indicates air movement towards the west. | m s-1 | 1 | HRES / ENS * | | TBC | TBC | |
| 132 | v | V component of wind | This parameter is the northward component of the wind. It is the horizontal speed of air moving towards the north, in metres per second. A negative sign thus indicates air movement towards the south. | m s-1 | 1 | HRES / ENS * | | TBC | TBC | |
* The perturbed forecasts for the ENS only contain the parameters pt, u and v. | ||||||||||
| Ensemble probabilities | ||||||||||
| 131098 | tpg25 | Total precipitation of at least 25 mm | Total precipitation of at least 25 mm | dimensionless | 2 | ENS | | TBC | TBC | |
| 131099 | tpg50 | Total precipitation of at least 50 mm | Total precipitation of at least 50 mm | dimensionless | 2 | ENS | | TBC | TBC | |
| 131085 | tpg100 | Total precipitation of at least 100 mm | Total precipitation of at least 100 mm | dimensionless | 2 | ENS | | TBC | TBC | |
| 131100 | 10fgg10 | 10 metre wind gust of at least 10 m/s | 10 metre wind gust of at least 10 m/s | dimensionless | 2 | ENS | | TBC | TBC | |
| 133093 | ptsa_gt_1stdev | Probability of 850hPa temperature standardized anomaly greater than 1 standard deviation | Probability of temperature anomaly greater than 1 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| 133094 | ptsa_gt_1p5stdev | Probability of 850hPa temperature standardized anomaly greater than 1.5 standard deviation | Probability of temperature anomaly greater than 1.5 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| 133095 | ptsa_gt_2stdev | Probability of 850hPa temperature standardized anomaly greater than 2 standard deviation | Probability of temperature anomaly greater than 2 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| 133096 | ptsa_lt_1stdev | Probability of 850hPa temperature standardized anomaly less than -1 standard deviation | Probability of temperature anomaly less than -1 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| 133097 | ptsa_lt_1p5stdev | Probability of 850hPa temperature standardized anomaly less than -1.5 standard deviation | Probability of temperature anomaly less than -1.5 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| 133098 | ptsa_lt_2stdev | Probability of 850hPa temperature standardized anomaly less than -2 standard deviation | Probability of temperature anomaly less than -2 standard deviation of the climatology. | dimensionless | 2 | ENS | | |||
| Ensemble mean / Ensemble standard deviation | ||||||||||
| 10 | ws * | The speed of horizontal air movement in metres per second. | The speed of horizontal air movement in metres per second. | m s-1 | 1 | ENS | | TBC | TBC | |
| 130 | t * | This parameter is the temperature in the atmosphere. | This parameter is the temperature in the atmosphere. | K | 1 | ENS | | TBC | TBC | |
| * These parameters have been added at 250 hPa. | ||||||||||
| Extreme Forecast Index (EFI) & Shift Of Tails (SOT) | ||||||||||
| 132045 | wvfi | Water vapour flux index | EFI and SOT for water vapour flux | dimensionless | 1 | ENS | | TBC | TBC | |
| 132167 | 2ti | 2 metre temperature index | EFI and SOT for weekly mean temperature (out to week 6) | dimensionless | 1 | ENS-EXTENDED | | TBC | TBC | TBC |
| 132228 | tpi | Total precipitation index | EFI and SOT for 1 week total precipitation (out to week 6) | dimensionless | 1 | ENS-EXTENDED | | TBC | TBC | TBC |
Software
ecCodes
ecCodes version 2.12.5 provides full support for the new model output parameters introduced in IFS Cycle 46r1.
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Graphical display of IFS cycle 46r1 test data
IFS cycle 46r1 test data graphical products will shortly become available.
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Member State users of the "Simple time-critical jobs" framework can test that their scripts will work with the IFS Cycle 46r1 test data by using the limited ECaccess 'events' set up for this purpose:
| 1633 | e_ms090 | At this stage, the e-suite step 090 (HRES-BC) has been generated. |
| 1634 | e_ms144 | At this stage, the e-suite step 144 (ENS-BC) has been generated. |
| 1635 | e_ms240 | At this stage, the e-suite step 240 (HRES) has been generated. |
| 1636 | e_ms360 | At this stage, the e-suite step 360 (ENS) has been generated. |
| 1637 | e_mslaw | At this stage, the e-suite step law (HRES-SAW) has been generated. |
| 1638 | e_ms1104 | At this stage, the e-suite step 1104 (ENS extended) has been generated. |
| 1639 | e_msrefc | At this stage, the e-suite step refc (REFORECAST) has been updated. |
For these events, MSJ_EXPVER environment variable is set to 0073 and can be used to specify the IFS Cycle 46r1 test data in any MARS retrievals.
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| Date | Reason for update |
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| Initial version |
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