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OPEN

The attribution to climate change, and improved forecasting of extreme and slow-onset climate- and weather-related events and their impacts

Last Updated: 8/19/2025Deadline: 23 September 2025€56.0M Available

Quick Facts

Programme:Horizon Europe
Call ID:HORIZON-CL5-2025-06-D1-04
Deadline:23 September 2025
Max funding:€56.0M
Status:
open
Time left:2 months

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💰 Funding Details

Funding Description

Call Identifier: HORIZON-CL5-2025-06-D1-04

Type of Action: HORIZON-RIA (Lump-Sum)

Total Indicative Budget per Project: up to €56 million (lump-sum)

Opening Date: 06 May 2025

Deadline: 24 September 2025 – 17:00 (Brussels time)


What is Financed?

* Development of advanced attribution methodologies for extreme and slow-onset climate events.

* Creation/enhancement of global databases of extreme events, impacts and attribution.

* Improvement of forecasting capacities that bridge climate science and operational services (e.g. early-warning, DRR, humanitarian planning).

* Integration of social-science approaches to address vulnerability, exposure and climate justice.

* International cooperation activities, especially with the Global South, for capacity building and data sharing.


Eligible Costs & Lump-Sum Logic

Under the lump-sum model, all direct and indirect costs are pre-agreed during grant preparation. Payments are triggered by the satisfactory completion of work packages, not by cost reporting.


Typical Budget Split (illustrative)

1. Research & Development (≈45 %) – observation networks, model development, AI/ML experimentation.

2. Data Infrastructure (≈15 %) – FAIR-compliant repositories, pilot databases, digital twins.

3. Demonstrators & Pilots (≈20 %) – operational forecasting prototypes, co-design workshops with practitioners.

4. SSH & Citizen Science (≈10 %) – participatory research, climate-justice frameworks.

5. Project Management, Dissemination, Clustering (≈10 %) – including networking with Destination Earth, XAIDA, CLINT, etc.


Geographic & Participation Rules

* Consortia must include ≥ 3 independent legal entities from three different EU Member States or Horizon-Europe Associated Countries.

* Partners from other regions (e.g. your country in the Global South) are welcome and can be funded if on the automatically eligible list or via own funding.


Open Science Obligations

* Open access to substantially improved models, tools and datasets.

* Compliance with FAIR principles for all research outputs.

* Transparency of assumptions, protocols and code beyond standard documentation.

Personalizing...

📊 At a Glance

€56.0M
Max funding
23 September 2025
Deadline
2 months
Time remaining
Eligible Countries
EU Member States, Associated Countries

🇪🇺 Strategic Advantages

Pan-European Advantages & Opportunities for Call HORIZON-CL5-2025-06-D1-04


1. Single Market Access (450 + million citizens)

Pan-EU public authorities & utilities – results feed directly into EU civil-protection actors (ERCC, rescEU, Copernicus Emergency), opening procurement pathways worth >€1 bn/yr.

Private climate-service providers – unified access to insurance, agriculture, energy & infrastructure markets governed by common EU directives (CSRD, EU taxonomy, SFDR) that mandate climate-risk information.

Data monetisation at scale – one harmonised licence for 27 Member States under INSPIRE/Open-Data Directive reduces transaction costs and accelerates uptake.


2. Cross-Border Collaboration & Knowledge Exchange

• Consortium can combine North-South climate gradients (Nordic heatwaves vs. Mediterranean droughts) to build richer attribution models impossible at national scale.

• Seamless use of EU research infrastructures: ECMWF (Reading & Bologna), EUMETSAT (Darmstadt), Destination Earth digital twins and pan-European HPC/AI under EuroHPC.

• Easier mobility of researchers through Marie Skłodowska-Curie and ERA-Talent schemes; compatible IP rules via DESCA.


3. Alignment with Flagship EU Policies

European Green Deal & EU Climate Law – provides legally required scientific basis for the 2040 target review and National Energy & Climate Plans (NECPs).

EU Strategy on Adaptation to Climate Change (2021) – delivers "Action 5: better data and risk assessment"; enables JustResilience objectives.

Digital Europe & Data Spaces – outputs can populate the Common European Green Deal Data Space and Climate Data Space announced in the Data Act.


4. Regulatory Harmonisation Benefits

• One GDPR & one AI Act compliance framework instead of 27 different regimes.

• Standardised Copernicus data policy allows integration of satellite, in-situ and citizen-science data across borders.

• Consistent application of the EU Civil Protection Mechanism facilitates operational uptake of new forecasting products by all Member States.


5. Leverage of the EU Innovation Ecosystem

• Direct pipeline from Horizon to EIT Climate-KIC accelerators and European Innovation Council (EIC) for spin-outs.

• Partnership with EuroGEOSS, ISIMIP, CLINT and XAIDA maximises dataset reuse.

• Access to >3,000 climate-tech SMEs listed in the Enterprise Europe Network (EEN) for piloting and commercialisation.


6. Funding Synergies & Blending Options

LIFE Climate Adaptation – co-fund demonstration pilots based on project’s attribution tools.

Digital Europe Programme – cover cloud/HPC costs for AI-based extreme-event emulators.

ERDF / Interreg – finance regional roll-out (e.g., Alpine, Baltic, Mediterranean macro-regions).

InvestEU & EIB Climate Risk Facility – scale private investments in resilient infrastructure informed by project outputs.

ESA Earth-watch & CRYO-SAT missions – complementary data grants for cryosphere-related extremes.


7. EU-Wide Scale & Impact Potential

• Harmonised methodologies become de-facto European standard for Loss-&-Damage assessments, feeding into UNFCCC negotiations.

• Comparable risk metrics across Member States enable aggregation into EU-level catastrophe bonds, unlocking new finance instruments.

• Fast replication via the EU Mission on Climate-Neutral & Smart Cities (112 cities) and Mission Adaptation (150 regions).


8. Strategic Value over National-Level Initiatives

Critical mass of data – pan-European observational networks multiply sample size of rare compound events, increasing statistical power.

Political legitimacy – findings inform EU-28 solidarity funds, going beyond national interests and strengthening cohesion.

Cost efficiency – single lump-sum grant avoids duplication of expensive HPC simulations.


9. Actionable Recommendations for Applicants

• Build a tri-angle consortium: climate-modelling centres (e.g., KNMI, DWD), social-sciences hubs (e.g., Sciences Po, LSE) and operational users (civil-protection agencies, insurers).

• Include at least three diverse climatic regions (e.g., Arctic, Continental, Mediterranean) to address EU evaluation on “geographic diversity & relevance”.

• Leverage Destination Earth by committing to upload improved parameterisations, fulfilling the call’s openness & FAIR requirements.

• Plan a policy sandbox with DG ECHO & DG CLIMA to prototype attribution-based early-warning dashboards.

• Reserve budget (≈5 %) for clustering with CLINT, XAIDA and forthcoming HORIZON-CL5-2024-D1 projects to satisfy coordination obligations.


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Bottom Line: Operating at EU scale multiplies scientific robustness, policy relevance and commercial potential; it positions the consortium as the reference provider of authoritative attribution and extreme-event forecasting for the entire European Union and its global partners.

🏷️ Keywords

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