Operational time-series data offered through Web services can be grouped under;
- Ensemble Meteograms
- Ensemble Vertical Profiles
Ensemble Meteograms (ENS Meteograms)
- Ensemble meteograms contain position based Ensemble/High resolution data for a selected group of time-steps for a given set of parameters.
- We generate specific databases for this purpose to achieve fast data retrieval.
- For each given time step, ensemble percentiles are presented.
- We historically group them into different "types" depending on available time steps/forecast range/presentation.
- Data returned is the nearest grid point.
Types of ENS meteograms
| Type | Data | Parameters | Availability | Access |
|---|---|---|---|---|
| 10-day meteograms |
|
| Twice a day at 00/12 runs | Graphical access
Data access
|
| 15-day meteograms |
|
| Twice a day at 00/12 runs | Graphical access
Data access
|
| 10-day wave meteograms |
|
| Twice a day at 00/12 runs | Graphical access
Data access
|
| Plumes |
|
| Twice a day at 00/12 runs | Graphical access
Data access
|
| Classical 15-day with climate |
|
| Twice a day at 00/12 runs Climate ONLY udpated twice a week | Graphical access
Data access
|
| CDF/EFI plots |
data for a given period (usually daily) |
| Twice a day at 00/12 runs | Graphical access
|
| Precipitation type |
| Twice a day at 00/12 runs | Graphical access
| |
| Extended range anomalies/climate |
|
| Twice a week | Graphical access
|
Some graphical examples
Data structure
- ENS meteogram data for many flavours and parameters can be automatically downloaded via ECMWF web-api interface.
- Output is a JSON file with a structure like below
{
"2t": {
"control": [...],
"hres": [...],
"min": [...],
"max": [...],
"median": [...]
...
"steps": [0,6,12, ...]
"metadata ..."
}
}
For further details on how to prepare a Web-API request and full structure of output data, see here;
Ensemble Vertical Profiles
Vertical structure of the Ensemble data is presented for certain parameters for a given time step.
- Parameters: Temperature, dew-point temperature, depression, Wind speed/direction, CAPE for instability
- Model levels: All model levels up to 500hPa, then every other one.
- Percentiles (min,max, median, 10th, 25th,75th, 90th), Control and HRES values are computed and presented
- Time steps: 6 hourly up to Day 5 (step: 120)
- Graphical products are available on www charts and ecCharts. Data is NOT made available yet but considered upon request.
Graphical examples
