Parameters forming part of the Weather and Geophysical Extremes Digital Twin (DT) are investigated here. See the encodings below, which are current for ecCodes 2.35.0.
Data availability
See the Extremes DT overview page for more details on data availability and accessing the data.
Additional keys
Please note that additional keys are often necessary in addition to the base parameter definition below. For example for:
- statistical processing (e.g. time interval of processing)
- level information (e.g. a given pressure level, say 300 hPa)
Legend:
| Parameter ready for GRIB2 archiving |
| Parameter with clarifications required for GRIB2 archiving |
| Parameter which needs to be created/modified for GRIB2 archiving |
Contents:
1. Instantaneous encodings
1.1. Fields on a single level or surface
1.1.1. Atmosphere (levtype sfc)
Time resolution: Hourly (step=0/1/2/.../96).
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | ci | (0 - 1) | 10 | 2 | 0 | 1 | GG | ||||||||
34 | sst | K | 10 | 3 | 0 | 1 | GG | ||||||||
78 | tclw | kg m**-2 | 0 | 1 | 69 | 1 | 8 | GG | |||||||
134 | sp | Pa | 0 | 3 | 0 | 1 | GG | ||||||||
136 | tcw | kg m**-2 | 0 | 1 | 51 | 1 | 8 | GG | |||||||
137 | tcwv | kg m**-2 | 0 | 1 | 64 | 1 | 8 | GG | |||||||
151 | msl | Pa | 0 | 3 | 0 | 101 | GG | ||||||||
165 | 10u | m s**-1 | 0 | 2 | 2 | 103 | 0 | 10 | GG | ||||||
166 | 10v | m s**-1 | 0 | 2 | 3 | 103 | 0 | 10 | GG | ||||||
167 | 2t | K | 0 | 0 | 0 | 103 | 0 | 2 | GG | ||||||
168 | 2d | K | 0 | 0 | 6 | 103 | 0 | 2 | GG | ||||||
3020 | vis | m | 0 | 19 | 0 | 103 | 0 | 10 | GG | ||||||
228029 | i10fg | m s**-1 | 0 | 2 | 22 | 103 | 0 | 10 | GG | ||||||
228050 | litoti | km**-2 day**-1 | 0 | 17 | 4 | 1 | 8 | GG. | |||||||
228218 | crr | kg m**-2 s**-1 | 0 | 1 | 76 | 1 | GG | ||||||||
228219 | lsrr | kg m**-2 s**-1 | 0 | 1 | 77 | 1 | GG | ||||||||
228221 | lssfr | kg m**-2 s**-1 | 0 | 1 | 56 | 1 | GG. | ||||||||
228235 | mucape | J kg**-1 | 0 | 7 | 6 | 17 | GG. Used rather than 59; cape, which is phased out. | ||||||||
260015 | ptype | code table (4.201) | 0 | 1 | 19 | GG | |||||||||
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| GG. ECMWF unit. Not yet supported by ExtremesDT IFS. | ||||||
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| GG | |||||||
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| GG | |||||||
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| GG. Not yet supported by ExtremesDT IFS. | |||||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. Used rather than 228001; cin, which is phased out. Not yet supported by ExtremesDT IFS. | ||||||||
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| GG. Not yet supported by ExtremesDT IFS. | |||||||||
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| GG. Not yet supported by ExtremesDT IFS. | |||||||||
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| GG. Not yet supported by ExtremesDT IFS. | |||||||||
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| GG. Needs Simulated Satellite mode on... |
1.1.2. Wave (levtype sfc)
Time resolution: Hourly (step=0/1/2/.../96).
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
140221 | mp2 | s | 10 | 0 | 28 | GG | |||||||||
140229 | swh | m | 10 | 0 | 3 | 101 | GG | ||||||||
140230 | mwd | degrees | 10 | 0 | 14 | GG | |||||||||
140231 | pp1d | s | 10 | 0 | 34 | GG | |||||||||
140232 | mwp | s | 10 | 0 | 15 | GG |
1.2. Fields on pressure levels (levtype pl)
Time resolution: Hourly (step=0/1/2/.../96).
21 pressure levels: (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000)
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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| 129 | Geopotential | z | m**2 s**-2 | 0 | 3 | 4 | 100 | GG. At surface this is orography. | |||||||
130 | t | K | 0 | 0 | 0 | 100 | GG | ||||||||
131 | u | m s**-1 | 0 | 2 | 2 | 100 | GG | ||||||||
132 | v | m s**-1 | 0 | 2 | 3 | 100 | GG | ||||||||
133 | q | kg kg**-1 | 0 | 1 | 0 | 100 | GG | ||||||||
157 | r | % | 0 | 1 | 1 | 100 | GG |
1.3. Fields on model levels
1.3.1. Sea-ice/snow/soil (levtype sol)
sol)Time resolution: Hourly (step=0/1/2/.../96).4 model levels: (1, ..., 4)
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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| 40; swvl2 41; swvl3 42; swvl4 Not yet supported by ExtremesDT IFS. |
1.4. Fields on height levels (levtype hl)
Time resolution: Hourly (step=0/1/2/.../96).
Currently 100m only. These are only for height levels >10m to preserve backwards compatibility with longstanding model fields (2t, 10u, 10v,...)
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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228246 | 100u | m s**-1 | 0 | 2 | 2 | 103 | 0 | 100 | GG | ||||||
228247 | 100v | m s**-1 | 0 | 2 | 3 | 103 | 0 | 100 | GG |
2. Mean encodings
2.1. Fields on a single level or surface
2.1.1. Atmosphere (levtype sfc)
Time resolution: 6 hourly means (step=0-6/6-12/.../90-96).
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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228058 | litota6 | km**-2 day**-1 | 0 | 17 | 4 | 1 | 8 | 0 | GG |
3. Accumulated encodings
3.1. Fields on a single level or surface
3.1.1. Atmosphere (levtype sfc)
Time resolution: Hourly accumulations since the start of the forecast (step=0-1/1-2/2-3/.../95-96).
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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142 | lsp | m | 0 | 1 | 196 | 1 | 1 | 1 | GG. ECMWF unit. | ||||||
144 | sf | m of water equivalent | 0 | 1 | 198 | 1 | 1 | 1 | GG. ECMWF unit. | ||||||
169 | ssrd | J m**-2 | 0 | 4 | 7 | 1 | 1 | GG | |||||||
175 | strd | J m**-2 | 0 | 5 | 3 | 1 | 1 | GG | |||||||
176 | ssr | J m**-2 | 0 | 4 | 9 | 1 | 1 | GG | |||||||
177 | str | J m**-2 | 0 | 5 | 5 | 1 | 1 | GG | |||||||
178 | tsr | J m**-2 | 0 | 4 | 9 | 8 | 1 | GG | |||||||
179 | ttr | J m**-2 | 0 | 5 | 5 | 8 | 1 | GG | |||||||
180 | ewss | N m**-2 s | 0 | 2 | 62 | 1 | 1 | GG. | |||||||
181 | nsss | N m**-2 s | 0 | 2 | 63 | 1 | 1 | GG. | |||||||
205 | ro | m | 2 | 0 | 201 | 1 | 1 | GG. ECMWF unit. | |||||||
228 | tp | m | 0 | 1 | 193 | 1 | 1 | 1 | GG. ECMWF unit. | ||||||
228216 | fzra | m | 0 | 1 | 194 | 1 | 1 | 1 | GG. ECMWF unit. | ||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. | |||||||
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| GG. WMO unit. Not yet supported by ExtremesDT IFS. |
4. Maximum encodings
4.1. Fields on a single level or surface
4.1.1. Atmosphere (levtype sfc)
Time resolution: Hourly max (step=0-1/1-2/2-3/.../95-96).
param Id | name | short Name | units | discipline | parameter Category | parameter Number | type Of First Fixed Surface | scale Factor Of First Fixed Surface | scaled Value Of First Fixed Surface | type Of Second Fixed Surface | scale Factor Of Second Fixed Surface | scaled Value Of Second Fixed Surface | type Of Statistical Processing | local Tables Version | comments |
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| GG. |
5. Minimum encodings
There are no minimum encodings for this dataset.
2 Comments
Anonymous
Great Information
Anonymous
Hi, can you please explain what means "encoding" distinction between variables?