Important information on CEMS Data Access via EWDS

ECMWF has implemented a new state-of-the-art data access infrastructure to host the Climate and Atmospheric Data Stores (CDS and ADS, respectively). All layers of the infrastructure are being modernised: the front-end web interface, the back-end software engine, and the underlying cloud infrastructure hosting the service and core data repositories.

As part of this development, a new data store for the Copernicus Emergency Management Service (CEMS) has been created. The CEMS Early Warning Data Store (EWDS) will host all the historical and forecast information for floods and forest fires at European and Global levels. Users are encouraged to migrate their accounts and scripts to the new EWDS Beta before 26 September 2024, when the system will become operational. On 26/09/24, legacy systems will no longer be available to users. Queues on legacy systems will be closed on 25/09/24. API users on legacy systems who will not have migrated to beta systems will see their API requests fail. API users on Beta systems will have until 29/10/24 to update the URL in their cdsapirc file

For more information, Please read: CEMS Early Warning Data Store (EWDS) is now live!

Updates to the EWDS documentation are ongoing as the implementation takes place.


CEMS-Floods (EFAS and GloFAS) datasets are openly available on the Early Warninge Data Store (EWDS). The EWDS provides access through web-based and API-based search and retrieve facilities. It is an easy way for users to access Early Warning-related data, including CEMS-Flood data. Access to the Early Warning Data Store is available via the web at the   CEMS Early Warning Data Store. 

EFAS and GloFAS data are primarily stored in GRIB format but may be available in NetCDF4 as well, please consult the Data Structure and Formats page for an up to date list of available formats. Follow the links for further information on the GRIB file format and for information on how to read GRIB files.

Warning!

The data service offered by the EWDS is not maintained as a time-critical operational service and should not be used for any time-critical operations!

If you would like access to real-time forecast data for time-critical operation please contact us by opening a ticket with the ECMWF Support Portal. A guide on how to do this is provided on the CEMS-Flood Data Support page.


What EFAS and GloFAS datasets are available on the EWDS? 

There are currently 10 EFAS and GloFAS datasets available on the EWDS, ranging from historical reanalysis, real-time flood and seasonal forecasts, as well as a comprehensive set of reforests. A list of the datasets is provided below together with a link to their corresponding 'Overview' page on the EWDS, where you will find further metadata and download functionalities:

DatasetCDS catalogue formUpdate
EFAS
EFAS historical

https://ewds.climate.copernicus.eu/datasets/efas-historical

daily, from 10:45 am UTC
EFAS forecasts

https://ewds.climate.copernicus.eu/datasets/efas-forecast

daily, from 10:45 am UTC
EFAS reforecasts

https://ewds.climate.copernicus.eu/datasets/efas-reforecast

updated with every major EFAS upgrade
EFAS seasonal forecasts

https://ewds.climate.copernicus.eu/datasets/efas-seasonal

monthly, every 10th from 12:30 UTC
EFAS seasonal reforecasts

https://ewds.climate.copernicus.eu/datasets/efas-seasonal-reforecast


updated with every major EFAS upgrade
GloFAS
GloFAS historical

https://ewds.climate.copernicus.eu/datasets/cems-glofas-historical

daily, from 10:45 am UTC
GloFAS forecasts

https://ewds.climate.copernicus.eu/datasets/cems-glofas-forecast

daily, from 10:45 am UTC

GloFAS reforecasts

https://ewds.climate.copernicus.eu/datasets/cems-glofas-reforecast

with every major GloFAS upgrade
GloFAS seasonal forecasts

https://ewds.climate.copernicus.eu/datasets/cems-glofas-seasonal

monthly, every 10th from 12:30 UTC
GloFAS seasonal reforecasts

https://ewds.climate.copernicus.eu/datasets/cems-glofas-seasonal-reforecast

with every major GloFAS upgrade

EWDS Support



All CEMS-Flood data related inquiries (including information about access for real-time CEMS-Flood forecasts and/or reforecasts and EWDS queries) should be made through ECMWF Support Portal. This portal is the primary entry point for all users for all types of queries on ECMWF data, products, and services. For further information on the ECMWF Support Portal read the news announcement, and for how to submit a query related to CEMS-Flood data see the CEMS-Flood Data Support Page.