Models and acronyms
ECMWF (European Centre for Medium-Range Weather Forecasts)
Models are called EC.
Determinist model: one forecast (one trajectory) every 6h (00h, 06h, 12h and 18h) called EC OP
00h and 12h run have 336h of forecast (~14 days)
06h and 18h run have 120h of forecast (~5 days)
Determinist model: one forecast (one trajectory) every 6h (00h, 06h, 12h and 18h) called EC AIFS. All runs have 336h of forecast (~14 days)
Ensemble model: several forecasts (50 different trajectories) every 6h (00h, 06h, 12h and 18h) called EC ENS
00h and 12h run have 336h of forecast (~14 days)
06h and 18h run have 120h of forecast (~5 days)
Extended ensemble model: several forecasts (100 different trajectories) every day called EC 46. Forecast up to 46 days.
NOAA (National Oceanic and Atmospheric Administration)
Models are called GFS.
Determinist model: one forecast (one trajectory) every 6h (00h, 06h, 12h and 18h) called GFS OP. All runs forecast up to 15 days.
Ensemble model: several forecasts (30 different trajectories) every 6h (00h, 06h, 12h and 18h) called GFS ENS. All runs forecast up to 15 days.
Historical data
Actuals data are what is the closest to observations. To produce them we take the last forecasted values for each target hour. For example we take the first 12 hours of run 00h and first 12 hours of run 12h to have an entire day of actuals.
EC OP: We have data up to 2015-01-01 on European grid ("EU": "71/-15/35/45") with information every hour and a resolution of 0.1°.
GFS OP: We have data up to 2015-01-15 on European grid ("EU": "71/-15/35/45") with information every 3 hour and a resolution of 0.25°.
Weather parameters
There are 2 types of parameters : cumulated and instantaneous :
Instantaneous parameters: 2t, 2d, 100u, 100v, 10u, 10v, sp. This means that the hour indicated matches the exact time at which the parameter is calculated.
Cumulative parameters: tp, ssrd, ssr. Here, this means that the parameter is the accumulation since the beginning of the run (ECMWF) since the last modulo 6h (NOAA). The timestamp indicates the end of the accumulation period.
Long name | Kpler name | Unit | ECMWF name | NOAA name |
2m temperature | 2t | K | 2t | 2t |
2m dew point | 2d | K | 2d | 2d |
10m u component of wind | 10u | m/s | 10u | 10u |
10m v component of wind | 10v | m/s | 10v | 10v |
100m u component of wind | 100u | m/s | 100u | u |
100m v component of wind | 100v | m/s | 100v | v |
total cloud cover | tcc | 0-100 (EC OP / GFS), 0-1 (EC ENS /EC 46) | tcc | tcdc |
0°C isotherm level | iso0 | m (EC), gpm ≈ m (GFS) | deg0l | hg |
surface pressure | sp | Pa | sp | sp (only available for GFS OP) |
total precipitation | tp | mm (EC OP), m (EC ENS/EC 46), kg/m² = mm (GFS) | tp | apcp |
Surface short-wave radiation downwards | ssrd | J/m² (EC), W/m² (GFS) | ssrd | dswrf |
Surface net short-wave radiation | ssr | J/m² (EC), W/m² (GFS) | ssr | dlwrf |
Surface run-off | sro | m (EC), mm (GFS) | sro | watr |
Snowfall | sf | m (EC) | sf | Not availa ble |
Snow depth | sd | m | sd | Not available |
Note : Units reflect the most common format across models. Where differences exist (e.g., tcc or ssrd), they are noted directly in the Unit column.
FTP access
Parameters
Path: 1_Weather/Forecast/Parameters
EC_ENS: one folder per country then files sorted in year month folders then one file per forecast time
EC_AIFS : one folder per country then files sorted in year month folders then one file per forecast time
EC_ENS_EXTENDED: one folder per country then files sorted in year month day folders then one file per day of forecast
EC_OP: one folder per country then files sorted in year month day folders then one file per forecast time
GFS_ENS: one folder per country then files sorted in year month day folders then one file per forecast time
GFS_OP: one folder per country then files sorted in year month day folders then one file per forecast time
Temperatures
Path: 1_Weather/Forecast/Temperature
COR_E: One folder per country then files divided in year month folders then one file per run in the month
Longterm temperatures
Path: 1_Weather/Forecast/Longterm_Temperature
COR_E: One folder per country then one file per year that contains seasonal temperatures