This page illustrates the procedure, step-by-step presented in How to acknowledge and cite a Climate Data Store (CDS) catalogue entry and the data published as part of it to acknowledge and cite the ERA5-Land hourly data from 1950 to present. This dataset is generated under the framework of the Copernicus Climate Change Service (C3S). For such dataset, the Licence to use Copernicus products only applies.

Use Case: A user has downloaded ERA5-Land hourly data from 1950 to present data from the Climate Data Store to calculate some results that will be presented in an article. The user did not download the data to redistribute it. The user downloaded data for the period 1977-1997 from the Climate Data Store on 23 October 2021.


Step 1 - Acknowledge as per dataset licenceStep 2 - Provide clear and visible attribution to the Copernicus program
Step 2 - Cite the dataset to accredit the creators of the data
  • Check the licence(s) → Licence to use Copernicus Products only
  • Acknowledge as indicated in Clause 5 e.g. in the context of this use case, Clause 5.1.2 and 5.1.3 apply and the data was used in 2020. In this case, a typical acknowledgement may be as follows:

The results contain modified Copernicus Climate Change Service information 2020. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.

In this case, use the citation provided in the CDS Catalogue entry Citation, under Citing the web catalogue entry:

Copernicus Climate Change Service (C3S) (2022): ERA5-Land hourly data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). 10.24381/cds.e2161bac (Accessed on 23-Oct-2021)

In this case, use the citation provided in the CDS Catalogue entry Citation, under Citing the data:

Muñoz Sabater, J., (2019): ERA5-Land hourly data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). 10.24381/cds.e2161bac  (Accessed on 23-Oct-2021), 

  • Acknowledgment section of the article may contain the following:

Muñoz Sabater, J., (2019) was downloaded from the Copernicus Climate Change Service (C3S) Climate Data Store (2022).

The results contain modified Copernicus Climate Change Service information 2020. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.

  • Bibliography may contain the following:

Copernicus Climate Change Service (C3S) (2022): ERA5-Land hourly data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). 10.24381/cds.e2161bac (Accessed on 23-Oct-2021)

Muñoz Sabater, J., (2019): ERA5-Land hourly data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). 10.24381/cds.e2161bac (Accessed on 23-Oct-2021)

  • Throughout the content of the article, the dataset used may be referred to as:

Muñoz Sabater, J., (2019)



This document has been produced in the context of the Copernicus Climate Change Service (C3S).

The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of C3S on behalf of the European Union (Delegation Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose.

The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view.