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Introduction

In the ECMWF data store (ECDS) established in 2025, users can find selection of WMO public datasets managed by ECMWF. 

The ECDS is powered by CDS technology (access via CDS-API, discovery forms etc). It shares the same authentication system, so that users can access any dataset across all data stores (CDS, ADS, EWDS, ECDS) with their ECMWF User account. Currently, each data store uses its own key and consequently, users accessing more than one platform need to use specific key for each platform.

Find all information how to access a dataset in ECDS and the avaiable tools and tutorials in the ECDS home page

How to get data

Documentation logo

Get data interactively (manually over the web)

Users can download data interactively from the ECDS website using the Download Data tab form...

API logo

Get data programmatically (API service)

...or programmatically using the API service. API guidelines including Troubleshooting are provided!

ECDS datasets

TIGGE and S2S

The data access to TIGGE and S2S is now being migrated from WEB-API to CDS-API (in ECDS). For more information about the timelines, please consult the dedicated page Decommissioning of ECMWF Public Datasets service. 

TIGGE and S2S have been the first datasets moved to ECDS. Follow the links below to the dedicated main web spaces for given dataset:

To get data from ECDS via CDS-API, multiple options exist.

Get data interactively

Discover and download sample data by using dedicated  ECDS forms (see table below)

Get data programmatically  

  1. Install CDS-API
  2. Discover data and generate CDS-API request by using using dedicated MARS catalogue or dedicated  ECDS forms (see table below)
  3. Tailor CDS-API request as needed and run it to get the required data


datasetECDS formMARS catalogue
TIGGEhttps://ecds.ecmwf.int/datasets/tigge?tab=downloadhttps://apps.ecmwf.int/data-catalogues/tigge
S2Shttps://apps.ecmwf.int/data-catalogues/s2s


The comprehensive overview of the older and new ways how to access TIGGE or S2S data and the related tools is avaiable in User guide for migration of S2S and TIGGE to ECDS.

Users with experience getting the data via older WEB-API can found there information how to update their workflows.



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