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Naming convention
The following dissemination filename convention is used for the transmission of ECMWF dissemination products:
ccSMMDDHHIImmddhhiiE where:
- cc is Dissemination stream name
- S is dissemination data stream indicator
- MMDDHHII is month, day, hour and minute on which the products are based
- mmddhhii is month, day, hour and minute on which the products are valid at
- ddhhii is set to “______” for Seasonal Forecasting System products
- ii is set to 01 for high resolution forecast time step zero, type=fc, step=0
- E is the Experiment Version Number’ (as EXPVER in MARS, normally 1)
Dissemination data stream indicator
S | Description | Stream & Type (where applicable) |
---|---|---|
A | HRES Weather Parameter products (10-day) | stream=oper, type=wp |
B | ENS Weather Parameter products (15-day) | stream=enfo, type=wp |
C | Tropical Cyclone high resolution trajectory forecast products (HRES) (10-day) | stream=oper/scda, type=tc |
D | High resolution forecast products - atmospheric data (HRES) (10-day) | stream=oper (also scda for 06/18 if requested) |
E | Ensemble forecast products- atmospheric data (ENS) (15-day) | stream=enfo (00/06/12/18) |
F | Extended range forecast products - atmospheric data (ENS-extended) (46-day) | stream=eefo (was enfo) |
G | Ensemble forecast products - high-frequency wave data (ENS-WAM) (15-day) | stream=waef |
H | Extended range re-forecast products - atmospheric data (ENS-extended) (46-day) | stream=eefh/eehs (was enfh/efhs) |
I | Ensemble re-forecast products - atmospheric data (ENS) (15-day) | stream=enfh/efhs (new) |
J | Ensemble re-forecast products - wave data (ENS) (15-day) | stream=enwh/wehs (new) |
K | Ensemble re-forecast overlap - atmospheric data | stream=efho (abandoned with 48r1) |
L | Seasonal forecasting system products - atmospheric data (SEAS) | stream=mmsm/mmsf/mmsa |
M | Extended range forecast post-processed products - wave data (e.g. ensemble means, extreme forecast indices) | stream=weef, type=em/efi/sot/ep (new) |
N | Seasonal forecasting system products - wave data (SEAS-WAM) | stream=wasf |
O | Ensemble forecast overlap data | stream=efov (abandoned woth 48r1) |
P | High resolution forecast - wave data (HRES-WAM) (10-day) | stream=wave (00/12) |
Q | High resolution forecast - high-frequency wave data (HRES-WAM) (10-day) | stream=scwv (06/18) |
R | Extended range forecast post-processed products - atmospheric data (e.g. ensemble means, extreme forecast indices) | stream=eefo, type=em/efi/sot/ep (new) |
S | High resolution forecast - high-frequency atmospheric data (HRES) (10-day) | stream=scda |
T | Tropical Cyclone ensemble trajectory forecast products (ENS) | stream=enfo, type=tc |
U | Ensemble forecast post-processed products - wave data (e.g. ensemble means, extreme forecast indices) | stream=waef, type=em/efi/sot/ep |
V | Extended range forecast products - wave data (ENS-WAM-extended) (46-day) | stream=weef (was waef) |
W | Ensemble forecast products - wave data (ENS-WAM) (15-day) | stream=waef |
X | Ensemble forecast products - high-frequency atmospheric data (ENS) (15-day) | stream=enfo |
Y | Ensemble forecast post-processed products - atmospheric data (e.g. ensemble means, extreme forecast indices) | stream=enfo, type=em/efi/sot/ep |
Z | Extended range re-forecast products - wave data | stream=weeh/wees (was enwh/wehs) |
Changes linked to 48r1:
No change to naming indicator or stream |
Re-purposed stream and naming indicator (with 48r1) |
New stream and naming indicator (with 48r1) |
Removed stream and naming indicator (with 48r1) |
File format
Most products are encoded in WMO FM-92 GRIB edition 1, unless otherwise specified in our Catalogue of Real-time products
- Product subset I-i-c (High Resolution Atmospheric model), III-i-c (Ensemble Atmospheric model): Model level parameters encoded in WMO FM-92 GRIB edition 2
- Product subsets I-ii, III-iv (Time Series of Weather Parameters) and Products subsets I-iii, III-viii (Tropical Cyclones), encoded in WMO FM-94 BUFR
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