Operational configurations of the ECMWF Integrated Forecasting System (IFS)
These tables summarise the key characteristics of the ECMWF IFS model, offering links to documentation on data descriptions, graphical products, cycle information, resolution, etc.
In this page |
See also
|
Atmospheric general circulation component
|
Forecast / Analysis |
Number of members |
Horizontal resolution |
Vertical levels |
Pressure at model top (hPa) |
Perturbation models |
|
---|---|---|---|---|---|---|---|
HRES Atmospheric Model high resolution |
Forecast
|
1 |
|
0.01 hPa |
No |
||
ENS Ensemble - Atmospheric Model |
Forecast
|
51 |
Day 0-15
|
91 | 0.01 hPa |
Yes (4) |
|
Atmospheric Model Extended forecast (monthly) |
Forecast
|
51 |
|
0.01 hPa | Yes (4) | ||
4DVAR 4-Dimensional data assimilation
|
Analysis |
1 |
|
|
0.01 hPa |
No |
|
EDA Ensemble of data assimilations |
Analysis |
51 |
|
0.01 hPa |
Yes (5) |
||
SEAS5 2017 version Cycle 43r1 Seasonal forecast |
Forecast
|
51
15 |
|
0.01 hPa |
Yes (4) |
Ensemble and Seasonal re-forecasts
|
Forecast/Analysis |
Number of members |
Horizontal resolution |
Vertical levels |
Pressure at model top (hPa) |
Perturbation models |
Number of years |
|
---|---|---|---|---|---|---|---|---|
ENS
|
|
11 |
Day 0-15
Day 16-46
|
91 | 0.01 hPa | Yes (4) | Most recent 20 | |
SEAS5 Cycle 43r1 Seasonal forecast |
Forecast
|
25
15 |
|
|
0.01 hPa | Yes (4) | 36 (1981-2016) |
Ocean general and sea ice
|
Forecast/Analysis |
Number of members |
Horizontal resolution ORCA grid |
Vertical levels |
---|---|---|---|---|
NEMO (LIM-2) |
Forecast
|
51 |
0.25° |
75 |
Oceans
|
Analysis Reanalysis |
5 |
0.25° |
75 |
Ocean-wave component
|
Forecast/Analysis |
Domain |
Number of members |
Horizontal resolution |
---|---|---|---|---|
Ocean Wave coupled to the atmospheric model |
Analysis and forecast
|
Global |
1 |
|
Ensemble wave forecast
|
Forecast
|
Global |
51 |
0-15 days
16-46 days
|
SEAS-WAM Seasonal wave forecast |
Forecast
|
Global |
51 |
|
Atmospheric and Ocean-wave reanalysis Cycle 31r2
|
Forecast/Analysis |
Number of members |
Horizontal resolution |
Vertical levels |
Pressure at model top (hPa) |
Perturbation models |
|
---|---|---|---|---|---|---|---|
ERA Interim Atmospheric Reanalysis |
Analysis
|
1 |
|
0.1 hPa |
No |
||
ERA Interim Wave Wave Reanalysis |
Analysis
|
1 |
|
No |
Table 1e: Key characteristics of the ERA Interim reanalyses
- (1) Native: as produced by the model on reduced Gaussian grids or spherical harmonics.
- (2) Interpolated to lat/lon
- (3) Native: as produced by the model on reduced lat/lon grids.
- (4) in analysis and model physics
- (5) in observations and model physics