Detection, monitoring, modelling, and attribution capabilities for Solar Radiation Modification (SRM) activities and assessing their impacts on Earth's climate and ecosystems
Open
This is the status published by the official source.
Expected Outcome:
Projects are to contribute to all of the following outcomes:
European Union’s, Member States’ and Associated Countries’ policy making is supported with robust evidence and their visibility in deliberations of SRM strengthened. Evidence and new knowledge related to the points below supports the European Union’s, Member States and Associated Countries’ contributions to relevant international review and assessment processes of SRM, notably by the IPCC:
• Civil society, researchers, public authorities as well as policy and decision makers have access to a solid scientific-technological knowledge foundation concerning the detection, attribution and deterrence of SRM activities as a contribution to an emerging multilateral governance system spanning both SRM-related research and technological development.
• The development of a global SRM governance framework is supported through advanced knowledge, generated by desk research, modelling, earth observation, the documentation of development pathways of various SRM technologies and their potential impacts on the earth system and its parts (oceans, large-scale atmospheric circulation, regional climate such as monsoons as well as changes in precipitation), as well as on societies (impact on decarbonisation pathways, livelihood security, nature dependent value chains etc.) and ecosystems. These are considered substantial gaps by the Intergovernmental Panel on Climate Change (IPCC), Convention on Biological Diversity (CBD) and Group of Chief Scientific Advisors.
• Aerosol and cloud modelling capabilities for global and regional models concerning Stratospheric Aerosol Injection (SAI), Marine Cloud Brightening (MCB) and Cirrus Cloud Thinning (CCT)/Mixed Phase Cloud Thinning (MCT) and their effects on atmospheric chemistry and dynamics are enhanced as a solid scientific-technological base for a detection and deterrence system.
• Policy makers and public authorities have access to robust space-borne, ground-based, air-borne and in-situ EO data (e.g. Copernicus) based on any relevant physical, chemical or social, societal data for the purpose of detection, assessment and attribution for outdoor SRM-development activities. Knowledge about SRM-induced changes to be expected in ecosystems, like shifted precipitation patterns and altered light quality, associated marine and terrestrial net primary production, and on sensitive habitats is enhanced. The knowledge generated shall inform, in the context of SRM technology governance, the detection, monitoring and attribution policy, in the sense of an ecological alert system focused on protecting global biodiversity.Scope:
Support provided under this topic must not be used to advocate, promote, or support the development of SRM. The conduct of SRM field experiments as well as the conduct of technical and operational SRM research is out of the scope.
The activity aims at enhancing the capabilities to detect, monitor and attribute SRM-related research, innovation or deployment activities. The activity shall be conducted in line with the precautionary approach as outlined by the European Group on Ethics[1], in accordance with the conclusion of SAPEA reports, the IPCC reviews, and build on the decisions of relevant international bodies, mainly CBD and support the ambitions of the Ocean Pact.
In recent years, SRM has been the subject of increased debate amongst a variety of stakeholders. The debate encompasses multiple perspectives, including the scientific and technical challenges, inherent risks, governability and ethical considerations of proposed methodologies. SRM encompasses a range of strategies aimed at reducing global warming by reflecting the Sun's energy away from Earth or allowing excessive energy to leave the atmosphere through means other than reducing greenhouse gas concentrations. While the focus of relevant multilateral environmental agreements is fully on rapid greenhouse gas (GHG) emissions reduction and adaptation to climate change, SRM is being proposed by some actors as an additional measure to reduce warming and address negative impacts of climate change. In this framework, the Council conclusions on EU Energy and Climate diplomacy[1] of 21 April 2026 expressed concern that “large scale climate interventions, in particular solar radiation modification, pose significant risks for the climate, the environment, security, and geopolitics”.
Critical uncertainties regarding the effectiveness and wide-ranging impacts of SRM currently obstruct comprehensive risk analysis and evidence-based policy. Knowledge gaps coupled to a lack of robust, formal governance is particularly concerning, as the potential for unilateral deployment by state or private actors could trigger significant international tensions. Historically, SRM has been addressed within the framework of the CBD, specifically through Decision X/33 [1]adopted at COP10 and decision XI/20 adopted at COP11[4]. Reaffirmed at CBD COP16, these decisions maintain what is widely recognized as a de-facto moratorium on the deployment of SRM and other geoengineering technologies to prevent irreversible ecological damage.
The project under this topic should address critical knowledge gaps identified by the IPCC, CBD and Group of Chief Scientific Advisors related to the absence of an evidence-supported governance framework on SRM. The action shall enhance detection, monitoring, and attribution capabilities for SRM by leveraging EU leadership in Earth observation utilizing space-borne, ground-based, and in-situ data. This includes physico-chemical, and social, societal, media or any other relevant data. This robust monitoring framework should be designed to detect and attribute outdoor experiments and deter potential unilateral deployments by private or state actors.
All deployment and field experiment-type activities are out of scope of this topic. In the absence of field trials different methods of physico-chemical measurements have to be validated against each other in a natural environment and modelling plays a crucial role for enhancing reliability, applicability and attribution capacity. To that end, the project is expected to significantly advance high-fidelity modelling of aerosol-cloud interactions, specifically targeting SAI, MCB, and CCT/MCT and develop a solid scientific basis for understanding how these methods affect atmospheric chemistry and dynamics.
The project under this topic should contribute to the establishment of a potential future ecological early-warning system focused on protecting global biodiversity and expected to predict and monitor how SRM-induced changes, such as shifted precipitation patterns and altered light quality, might disrupt photosynthesis and associated marine net primary production, and sensitive habitats. By identifying these unintended consequences, the project aligns with the CBD and ensures that ecological protection remains a central pillar of any climate intervention research.
SRM is mainly criticized for reasons including ethical concerns, general mistrust of technocratic interventions, lack of international governance and regulatory frameworks, risk of termination shock, as well as unknown long- and short-term side effects and high uncertainty. To achieve the goals of the project, the activity should therefore bridge the gap between technical disciplines and the humanities. Only through this transdisciplinary lens can the multifaceted threats to our ecosystems and societies be addressed.
In December 2024 the European Commission’s Scientific Advisory Mechanism’s Group of Chief Scientific Advisors and European Group on Ethics have published expert advice on the limitations and requirements for research activities related to SRM technologies recommending inter alia highest possible transparency and open science practices. Further, the scientific advisory mechanism recommends setting limits to public support to SRM deployment technology development outside a multilateral governance framework. These considerations should guide the project design and consortium composition.
Entities with a known interest in the commercial development or deployment of SRM technologies may create a substantial conflict of interest within a project targeted towards the development of detection and monitoring capacity for a governance framework. Such conflicts should be avoided and related risks managed. To that end EU representatives will be participating in the evaluation committee. Beyond commercial sensitivities, the global discourse surrounding SRM is highly polarized. These technologies are frequently the subject of intense public debate. As the project operates in this highly sensitive discorse, it requires an exceptionally high standard of transparency to build public trust and ensure scientific credibility.
Outreach to citizens and civil society in co-designing the R&I agenda and assessing the R&I outcomes is indispensable as part of the project’s methodology and approach; this should have a global engagement dimension to be reflected in the composition of a steering board or similar advisory or feedback structure. Such structure should also advise on the development of a risk assessment regarding the possible misuse of the project results and be in a position to propose mitigation measures.
The project should commit to the FAIR-principles (“Findable, Accessible, Interoperable, Re-useable”) with respect to research data. Open and early sharing of work helps to accelerate research, increase research transparency and support collaborative as well as inter- and transdisciplinary work. Early and open sharing of research, for example through preregistration, registered reports and / or preprints is strongly encouraged; while stringent management of potentially security relevant information produced or treated needs should be demonstrated. Widest possible use shall be made of Creative Commons licenses[4] for outputs of the project other than scientific publications.
[1] https://op.europa.eu/en/publication-detail/-/publication/543a8475-e9b8-11ef-b5e9-01aa75ed71a1/language-en https://data.consilium.europa.eu/doc/document/ST-8417-2026-INIT/en/pdf https://www.cbd.int/decisions/cop/10/33 Stop-mark or exit ramps might be defined if concrete risk for unintended use of the knowledge created is about to realise in the absence of a restricting governance regime. The advisory stricture shall in this case directly address the Commission services.
[2] https://op.europa.eu/en/publication-detail/-/publication/543a8475-e9b8-11ef-b5e9-01aa75ed71a1/language-en https://data.consilium.europa.eu/doc/document/ST-8417-2026-INIT/en/pdf https://www.cbd.int/decisions/cop/10/33 Stop-mark or exit ramps might be defined if concrete risk for unintended use of the knowledge created is about to realise in the absence of a restricting governance regime. The advisory stricture shall in this case directly address the Commission services.
[3] https://op.europa.eu/en/publication-detail/-/publication/543a8475-e9b8-11ef-b5e9-01aa75ed71a1/language-en https://data.consilium.europa.eu/doc/document/ST-8417-2026-INIT/en/pdf https://www.cbd.int/decisions/cop/10/33 Stop-mark or exit ramps might be defined if concrete risk for unintended use of the knowledge created is about to realise in the absence of a restricting governance regime. The advisory stricture shall in this case directly address the Commission services.
[4] https://www.cbd.int/decision/cop/default.shtml?id=13181 https://creativecommons.org/cc-licenses/
[5] https://www.cbd.int/decision/cop/default.shtml?id=13181 https://creativecommons.org/cc-licenses/
- Status
- Open
- Deadline
- (time not stated)
- Opens
- Published
- Total budget
- €10,000,000
- Grant range
- €10,000,000 – €10,000,000
- Country
- European Union (EU-wide)
- Programme
- Horizon Europe (HORIZON)
- Funder
- European Commission
- Official page
- Open at the source portal
What applying involves
12 steps, all of them taken from this call's own documents.
Understand the call
- Read the call on the source portal and download its documents
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Write the proposal against the award criteria and thresholds
The evaluation committee will be composed partially by representatives of EU institutions. described in Annex D of the Work Programme General Annexes — conditions §5a
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Check the grant's legal and financial set-up
standard for this programme
described in Annex G of the Work Programme General Annexes. Specific conditions described in the [specific topic of the Work Programme] Application and evaluation forms and model grant agreement (MGA): Application form templates Please use the application form that you will find in the Submission System. You can find examples of standard application forms in the Reference Documents page . Evaluation form templates — will be used with the necessary adaptations Standard … — conditions §6
- Check the amount you plan to request against the call's range
Check you are eligible
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Check every partner is established in an eligible country
standard for this programme
described in Annex B of the Work Programme General Annexes. A number of non-EU/non-Associated Countries that are not automatically eligible for funding have made specific provisions for making funding available for their participants in Horizon Europe projects. See the information in the Horizon Europe Programme Guide — conditions §2
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Meet the call's other eligibility conditions
If projects use satellite-based earth observation, positioning, navigation and/or related timing data and services, beneficiaries must make use of Copernicus and/or Galileo/EGNOS (other data and services may additionally be used). described in Annex B of the Work Programme General Annexes — conditions §3
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Be able to show financial and operational capacity
standard for this programme
described in Annex C of the Work Programme General Annexes — conditions §4
- Check the conditions for financial support to third parties
Prepare the documents
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Prepare Part B of the Application Form
standard for this programme
Proposal page limits and layout: described in Part B of the Application Form available in the Submission System. — conditions
- Complete the detailed budget table standard for this programme
Submit
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Check the submission and evaluation process
The following additions to the general award criteria apply: Quality and efficiency of the implementation: - the risk management procedures to address conflict between the creation of a restricting governance framework for SRM and partners' interest in commercial deployment or development of technologies for the deployment of SRM. described in Annex F of the Work Programme General Annexes and the Online Manual — conditions §5b
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Submit before the closing date shown above
The source states the closing day but no closing time — check the portal before the last day. — calls.deadline
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Where this came from
- Source document
- https://ec.europa.eu/info/funding-tenders/opportunities/data/topicDetails/horizon-bridging-2027-04-11.json
- Document fingerprint
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- First recorded here
What has changed
- status changed from forthcoming to open on
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- deadline first recorded as 2027-02-16 on
- opens_on first recorded as 2026-10-06 on
- published_on first recorded as 2026-09-30 on
- status_basis first recorded as source_status on
- status first recorded as forthcoming on
- title first recorded as Detection, monitoring, modelling, and attribution capabilities for Solar Radiation Modification (SRM) activities and assessing their impacts on Earth's climate and ecosystems on
Data source
© European Union, 2026. Source: EU Funding & Tenders Portal. Reused under Commission Decision 2011/833/EU — CC BY 4.0.
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The source last changed this record on Tue, 10 Nov 2026 12:50:22 GMT.
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