Update on ITTs

Links to published OJEU Contract Notices

ECMWF has submitted Contract Notices for publication in the Official Journal of the European Union (OJEU) for the following Copernicus procurements. Links to the published contract notices in OJEU are put in the table below once the contract notice is published (note that there may be a few days' delay between submission of the contract notice to OJEU and its publication).

To respond to any of these Invitations to Tender, suppliers should register on ECMWF's eProcurement Portal at https://procurement.ecmwf.int/ or by clicking on the following direct link https://procontract.due-north.com/Register. The registration process is free of charge and is managed by the Portal provider (Proactis / Due North). During the registration process (on the Areas of Interest step), please select CPV codes 72000000 and 73000000 in order to ensure that you receive notifications about Copernicus tender opportunities published by ECMWF. You do not have to restrict yourself to those CPV codes if you wish to receive notifications of tenders issued by other buyer organisations using the same eProcurement Portal.

The timetable and specification for each ITT are available from the table below.

Suppliers should note that ECMWF Copernicus ITTs/RFPs are composed of a set of documents which can be accessed through the portal. The adverts published in the portal will contain the main document(s) of the ITT/RFP as attachments. “Online questionnaire” is the step where all documents are provided and where tenderers prepare their responses by answering questions and uploading documents in accordance with the instructions therein. Suppliers will need to “register interest” in an ITT/RFP in order to access the online questionnaire (Registering interest is a step to access the ITT/RFP and does not commit the suppliers to respond.).  

Frequently asked questions for the Portal are answered here: https://supplierhelp.due-north.com/

Please refer to the PDF icon "ECMWF eProcurement Portal Guidance for Suppliers" on how to access the ITT documents and submit a response.


Copernicus Invitations to Tender currently open are listed below:

ITT reference ITT name   published date closing date


Corrigendum Notice

Operational access to global and regional climate projections and predictions from ESGF

PDF icon C3S2_380 Volume IA (Amended)

PDF icon C3S2_380 Volume II

1 March 2021

8 April 2021

15:00 UK time

15 April 2021

15:00 UK time


Operational Seasonal Predictions

PDF icon C3S2_370 Volume IA

PDF icon C3S2_370 Volume II

18 March 2021

22 April 2021

15:00 UK time


Collection and Processing of In Situ Observations

PDF icon C3S2_311 Volume IA

PDF icon C3S2_311 Volume II

9 April 2021

20 May 2021

15:00 UK time


Regional Climate Reanalysis Timely Updates

PDF icon C3S2_360 Volume IA

PDF icon C3S2_360 Volume II

13 April 2021

26 May 2021

15:00 UK time


Support for climate reanalysis including satellite data rescue

PDF icon C3S2_314 Volume IA

PDF icon C3S2_314 Volume II

14 April 2021

26 May 2021

15 :00 UK time


Corrigendum Notice

Essential Climate Variable Products Derived from Observations

PDF icon C3S2_312a Volume IA (Amended)

PDF icon C3S2_312a Volume II

30 April 2021

16 June 2021

15:00 UK time

23 June 2021

15:00 UK time


Regional air quality products

PDF icon CAMS2_40_Volume IA

PDF icon CAMS2_40 Volume II

21 May 2021


22 July 2021

15:00 UK time


Enhancing User Intelligence for CAMS: User uptake and user requirements activities

PDF icon CJS2_152a Volume IA

PDF icon CJS2_152a Volume II

27 May 2021

1 July 2021

15:00 UK time


Corrigendum Notice

Copernicus Data Stores Modernisation

PDF icon CJS2_211 Volume IA (Amended)

PDF icon CJS2_211 Volume II

1 June 2021

14 July 2021

15:00 UK time

28 July 2021

15:00 UK time


Provision of global inversion-optimised greenhouse gas fluxes and concentrations

PDF icon CAMS2_55 Volume IA

PDF icon CAMS2_55 Volume II

4 June 2021


29 July 2021

15:00 UK time


Regional evaluation & quality control (EQC)

PDF icon CAMS2_83 Volume IA

PDF icon CAMS2_83 Volume II final.pdf

7 June 2021

29 July 2021

15:00 UK time


Corrigendum notice is in publication process

Advancing ocean data assimilation methodology for climate applications

PDF iconC3S2_601 Volume IA_Amended

PDF icon C3S2_601 Volume II

18 June 2021

15 September 2021

6 October 2021

15:00 UK time


Technical support for the management of ECMWF’s ECVs Contracts

PDF icon C3S2_120a Volume IA

PDF icon C3S2_120a Volume II

PDF icon C3S2_120a Annex 1 to Volume II

30 June 2021

11 August 2021

15:00 UK time


Global and European emission inventories

PDF icon CAMS2_61 Volume IA

PDF icon CAMS2_61 Volume II

14 July 2021


23 September 2021

15:00 UK time



Evaluation and Quality Control (EQC) of global products

PDF icon CAMS2_82 Volume IA

PDF icon CAMS2_82 Volume II

14 July 2021


23 September 2021

15:00 UK time


Corrigendum Notice (extension)

Quality Assurance for Datasets in the Climate Data Store

PDF icon C3S2_520 Volume IA

PDF icon C3S2_520 Volume II

Corrigendum notice (published on 10.09.2021)

27 August 2021

13 October 2021

15:00 UK local time

27 October 2021

15:00 UK local time


Maintenance and Development to Support the C3S – EEA Interface: European Climate Data Explorer

PDF icon C3S2_430a Volume IA

PDF icon C3S2_430a Volume II

1 October 2021

25 November 2021

15:00 UK local time


Multi-model Operational Hydrological Seasonal Prediction Service

PDF icon C3S2_410 Volume IA

PDF icon C3S2_410 Volume II

12 October 2021

23 November 2021

15:00 UK local time


New Generation Copernicus pan-Arctic Regional Climate Reanalysis

PDF icon C3S2_361a Volume IA

PDF icon C3S2_361a Volume II

22 October 2021

22 December 2021

15:00 UK local time

Links to published OJEU Prior Information Notices

ECMWF has published Prior Information Notices (PINs) in the Official Journal of the European Union (OJEU) for the following Copernicus procurements. Links to the PINs are in the table below.

Specific information for these procurements will be published when the Contract Notices are published in the OJEU.


Essential Climate Variable Products Derived from Satellite Observations


Modernisation of the Climate (CDS) and Atmosphere (ADS) Software Infrastructure



Background information