CEMS-Flood (EFAS/GloFAS) datasets are openly available and can be accessed in various ways. The ways to access and the type of files that are accessible depend on EFAS/GloFAS users' credentials.
The following pages provide details on how to access the data through each channel along with information on web services provided by CEMS-Flood.
EFAS
EFAS has a dedicated data service enabling users (public or EFAS registered users) to access hydrological simulation time series produced by the system. Five types of hydrological time series datasets are available: historical hydrological simulations, medium- and seasonal-range forecasts and reforecasts for both medium- and seasonal-range. Detailed information on the available datasets and accessible variables can be found under the heading EFAS Available Data.
Access to EFAS data depends on their release date:
- Near real-time data. This is a restricted service only available to registered authorised EFAS users, providing access to operational hydrological time series data within 30 days of their release date. Access is possible through a dedicated password-protected ftp service.
- Archived data. This is a service open to all, conditional to license conditions acceptance, providing access to operational hydrological time series data after 30 days of their release date, and to reference historical hydrological time series data. Access is possible through the Copernicus Climate Data Store (CDS) and ECMWF Meteorological Archival and Retrieval System (MARS).
EFAS hydrological time series data are provided as compressed gridded time series either as grib files (a compressing format used at ECMWF to store effectively large amounts of gridded data) or as NetCDF files. Currently, access to NetCDF files is only possible directly from CDS. Converter software can be used to transform grib files into netCDF files. More information can be found on the working with CEMS-Flood data pages.
GloFAS
GloFAS has a dedicated data service enabling users to access hydrological simulation time series over the world produced by the system. Five types of hydrological time series datasets are available: hydrological reanalysis, real-time 30-day and seasonal forecasts and reforecasts for both 30-day and seasonal ranges.
Access to GloFAS Data is subject to the GloFAS Terms of Service.