Blog

With the need to consolidate its data-provision infrastructure, ECMWF will decommission the Public Datasets Service.

On 1 June 2023 the Public Datasets Service, including access via the Web API client, except for S2S and TIGGE, will stop and the datasets listed below will no longer be available via this service. 

Global Reanalysis datasets:

• CERA-20C (Jan 1901 - Dec 2010)
• ERA-20C (Jan 1900 - Dec 2010)
• ERA-Interim (Jan 1979 - Aug 2019)
• ERA-Interim/LAND (Jan 1979 - Dec 2010)
• ERA-20CM (Jan 1900 - Dec 2010) Final
• ERA-40 (Sep 1957 - Aug 2002)
• CERA-SAT (Jan 2008 - Dec 2016)

Regional reanalysis:

• UERRA

Atmospheric composition:

• MACC Reanalysis (2003-2012)
• MACC GHG flux inversions (1997 - 2014)

Observation feedback:

• ERA-20C (Jan 1900 - Dec 2010)
• ISPD v2.2
• ICOADS v2.5.1 with interpolated NOAA 20CR feedback

Miscellaneous

• YOPP

If you still need to access any of the datasets listed above via the Public Datasets Service, please do so before 1 June 2023. For alternative ways of accessing the data and more up-to-date datasets, please see Decommissioning of ECMWF Public Dataset Service and "watch" the page to get notified of further updates. For any questions, please contact us via the ECMWF Support Portal. 

Thank you for using our services and please accept our apologies for any inconvenience.v

From 5 March 2019, the access to the ERA5 dataset has migrated from the Web API the Climate Data Store (CDS).

This article will help users with the migration:

The Web API uses MARS to transform and interpolate the input fields to the user requested grid.

Please report any issue you may have with the retrieved data to servicedesk@ecmwf.int

The following 2 new Monthly sub-datasets have been added under the "CERA-SAT" dataset

If you are downloading ERA5 or C3S Seasonal data through the ECMWF public datasets,  please migrate to the Climate Data Store.

If you are using either Access ECMWF Public Datasets or Access MARS to get ECMWF data, from 28 Feb 2018 onward the system will fail if the number of expected fields is different than the number of retrieved fields. More information here:

Troubleshooting MARS_EXPECTED_FIELDS

The following new models have been added on UERRA dataset:

COSMO/En, MESAN/V1, MESCAN-SURFEX, MESCAN-SURFEX/En

To improve the service ECMWF implemented the following limits:

1. daily datasets: one month per request
2. monthly datasets: one year per request

See more on Web API Downloads