ECMWF archive catalogue
The catalogue contains the following data sets:
Analysis run for the four main synoptic hours 00, 06, 12 and 18 UTC; forecast run out to 10 days based on the 00/12 UTC analysis forecast.
Data is produced at the surface, on model levels, pressure levels, isentropic levels and levels of equal potential vorticity.
ECMWF's deterministic atmospheric model is coupled with a wave model allowing two-way interaction between wind and waves.
Analyses are available for the four main synoptic hours 00, 06, 12 and 18 UTC; forecasts are produced globally out to 10 days based on the 00/12 UTC analysis.
ECMWF runs the wave model at a finer resolution for a limited area. It used to be called the Mediterranean model but is now known as the European wave model.
Analyses are available for the four main synoptic hours 00, 06, 12 and 18 UTC; forecasts are produced out to 5 days based on the 00/12 UTC analysis.
The Ensemble Prediction System (EPS) runs 50 perturbed forecasts (different forecast with perturbed initial conditions) and a control (unperturbed) forecast.
Atmospheric and ocean components run uncoupled for the first 10 days and coupled from then onwards.
The hindcast system consists of a 5-member ensemble of 32-day EPS/monthly integrations, starting on the same day and month as the real-time forecast for each of the past 18 years.
The seasonal forecast system couples three models: the atmospheric, wave and ocean models.
The seasonal forecasts consist of an ensemble composed of several members (the number of members varying depending on the date of the archive).
The ensemble is constructed by combining the ensemble ocean analysis with SST perturbations and the activation of stochastic physics.
A set of re-forecasts (otherwise known as hindcasts or back integrations) are made starting on the 1st of every month for the years archived. They are identical to the real-time forecasts at the time of the archive in every way.
ECMWF maintains an archive of monthly mean data from the atmospheric and wave model archive. The resolution and internal representation of the archive may change according to changes in ECMWF's operational practice.
The datasets available include: analysis, forecast and forecast accumulations as output from atmospheric model, as well as analysis and forecast from a wave model re-analysis. There is also a monthly means data set containing data at the resolution of the data assimilation and forecast system used by each re-analysis.
The EUROSIP multi-model seasonal forecasting system consists of several independent coupled systems all integrated in a common framework.
MACC provides data records of atmospheric composition for recent years, obtained from a reanalysis system, and data for monitoring present conditions and forecasting the distribution of key constituents for a few days ahead.The MACC datasets comprise:
Observations used as input to the assimilation system are also archived in MARS, as well as the Feedback on how the observations are used in the analysis. The following "essential" observations, as defined in WMO resolution 40 (CG-XII), are available: