16 https://www.ecmwf.int/ https://procurement.ecmwf.int/ ORG-0001 European Centre for Medium Range Weather Forecasts (ECMWF) Robert-Schuman-Platz 3 Bonn 53175 DEA22 DEU fiscal code no. 91148050684 Procurement at ECMWF +44 118 949 9000 procurement@ecmwf.int https://www.ecmwf.int/ https://procurement.ecmwf.int/ ORG-0002 European Centre for Medium-Range Weather Forecasts (ECMWF) Shinfield Park Reading RG2 9AX GBR not applicable Procurement at ECMWF +44 118 949 9000 +44 118 986 9450 procurement@ecmwf.int https://op.europa.eu ORG-0000 Publications Office of the European Union Luxembourg 2417 LU000 LUX PUBL +352 29291 ted@publications.europa.eu 00518829-2026142/20262026-07-27+02:00 2.3 eforms-sdk-1.14 7fe5620a-8b0d-47ad-b84a-dd25b4a5d85e 44e8a55c-8103-45ab-85a8-fa9ca85cae42 2026-07-24Z 13:03:06Z 01 other cn-standard ENG https://procurement.ecmwf.int/ int-org env-pro ORG-0001 ted-esen ORG-0000 LocalLegalBasis ECMWF Financial Regulations epo-procurement-document open false C3S2_610 C3S2_610 Development of an event-linked counterfactual diagnostic evidence layer based on ECMWF forecast and reanalysis information in support of the C3S Operational Attribution Office The aim of this ITT is to develop an event-linked counterfactual evidence layer to support the C3S Operational Attribution Office. Using ECMWF forecasts and reanalysis products, it will derive event-specific counterfactual diagnostics that provide additional evidence on how the intensity, probability or other characteristics of observed extreme events may have differed in the absence of human-induced climate change. ECMWF intends to award a single Framework Agreement, with a maximum duration of 18 months, which shall be implemented via a single multi-annual Service Contract, expected to commence at the beginning of Q1 2027. services Procedure to be applied: The procurement will be conducted in accordance with ECMWF's procedures as set out in Invitation to Tender documents, which are available on ECMWF's eProcurement Portal (https://procurement.ecmwf.int/) and no other procedures will apply. In submitting this notice ECMWF does not waive the privileges and immunities granted to it by virtue of its status as an intergovernmental organisation or submit itself to any jurisdiction. Tenders must be submitted using ECMWF's eProcurement Portal. Hard copy (paper) submissions will not be accepted. Due to the need to include performance and compliance obligations in the contract, ECMWF will contract only with a single legal person or entity which is competent to undertake and commit to these obligations. ECMWF recognises that some bids will involve a number of organisations which may wish to work together to deliver the contract requirements. In such cases, these organisations must identify a lead contractor who will sign the contract with ECMWF and who will be responsible for putting in place legal arrangements to ensure that it can guarantee that all other organisations will also meet the contract obligations. ECMWF will not enter into multiple contracts with individual members of consortia or groups of service providers. Eligibility: Refer to Section 3.2 of Volume I of the ITT documents. 750000 750000 73000000 Service shall be performed on Contractor's premises, located either in a European Union Member State or in a Copernicus Participating State. anyw-eea LOT-0001 COPERNICUS not-allowed eu-funds t-requ false ENG C3S2_610 tdf-non-av restricted-document https://www.ecmwf.int/en/about/suppliers Please refer to Volume V of the ITT documents. epo-procurement-document none no allowed allowed per-exa 5 quality Legal and Financial per-exa 15 quality Track Record per-exa 15 quality Quality of Resources Deployed per-exa 30 quality Technical Solution Proposed per-exa 20 quality Management and Implementation per-exa 15 price Price ORG-0001 ORG-0001 https://procurement.ecmwf.int/ ORG-0001 ORG-0001 9 Please refer to ECMWF's Procurement Debriefing and Review Procedure published at the ECMWF Suppliers webpage (https://www.ecmwf.int/en/about/suppliers). ORG-0002 ORG-0002 ENG true true Please refer to Volume I of the ITT documents for a complete description of the communication and tender submission procedure. Tenderers must register their organisation on the ECMWF's eProcurement Portal to be able to access the ITT documents and to be able to submit a response to the ITT. Registration is free and the process is managed by the portal provider. required false https://procurement.ecmwf.int/ 2026-10-01+02:00 16:00:00+02:00 2026-09-16+02:00 23:59:59+02:00 false 1 fa-wo-rc none C3S2_610 C3S2_610 Development of an event-linked counterfactual diagnostic evidence layer based on ECMWF forecast and reanalysis information in support of the C3S Operational Attribution Office This ITT aims to develop a methodological framework and supporting procedures for generating event-conditioned diagnostic evidence for high-impact extreme events by assessing how key characteristics of observed present-day events would differ under counterfactual climate conditions without anthropogenic warming. Tenderers must propose a scientifically robust and operationally feasible approach, including an assessment of data availability, computational requirements, reproducibility, interpretability and delivery timelines, while confirming that no new large-scale climate or weather model simulations will be undertaken. The successful tenderer will, in consultation with C3S, establish quality requirements and an evaluation methodology to assess the physical consistency, robustness, reproducibility, transparency and limitations of the derived evidence, and will provide a comprehensive handover package to support future operational or pre-operational implementation. services true 750000 750000 73000000 Service shall be performed on Contractor's premises, located either in a European Union Member State or in a Copernicus Participating State. anyw-eea 2027-02-01+01:00 18