CMEMS ocean analysis and forecasting and
C3S climate analysis and forecasting


WEkEO is one of the 5 Copernicus DIAS (Data and Information Access Services). The overarching objective of DIAS is to enhance access to Copernicus data and information for further use in an efficient computing environment implementing the paradigm of “bringing the user to the data”, as one condition for unlocking the potential value of Copernicus for innovation, science, new business, implementation of public policies and economic growth. WEkEO is the service for marine environmental data, virtual environments for data processing, and skilled user support. WEkEO will have a public and free part for discovery and access to data and data products, while it will also have a commercial part with various analysis applications and cloud space. Its core business will be known as the "Harmonized Data Access (HAD)".

Figure 1: Overview of planned offering of WEkEO portal

Type & number of data sets

The HAD will provide discovery and access to:

  • All the Sentinel satellite data sets: S1, S2, S3 Marine, S3 Land, S5P
  • Main Copernicus Service Data products from:
    • Copernicus Marine Service: CMEMS
    • Copernicus Atmospheric Service: CAMS
    • Copernicus Climate Service: C3S
    • Copernicus Land Service: CLMS

Figure 2: Example of data aggregation

Core Services

The Harmonised Data Access (HDA) API will allow uniform access to the whole WEkEO catalogue, including subsetting and downloading functionalities. The HDA API will be REST-based. More details are not yet available. Its launch is planned in the first quarter of 2020, and it will be available at

Blue-Cloud partners involved