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Horizon Europe · European Union

Detection, monitoring, modelling, and attribution capabilities for Solar Radiation Modification (SRM)…

Full title in the source: Detection, monitoring, modelling, and attribution capabilities for Solar Radiation Modification (SRM) activities and assessing their impacts on Earth's climate and ecosystems

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The EU's Horizon Europe programme expects to make 1 award of €10 million, from a total budget of €10 million. Applications close on 16 Feb 2027 (EU calls usually close at 17:00 Brussels time). Organisations in EU member states and Horizon Europe associated countries such as Türkiye can usually take part; the topic conditions control.

Deadline
16 Feb 2027 (in 93 days)
Grant amount
€10 million per project
Funding rate
100% of eligible costs Standard rule for this programme; the call can differ.
Total budget
€10 million
Expected awards
1
Type of action
HORIZON Research and Innovation Actions · HORIZON Action Grant Budget-Based
Likely applicant types
Companies, SMEs / start-ups, Non-profits, Universities & research, Public bodies From source categories or programme rules; the call decides.
Funder
Horizon Europe (HORIZON)
Reference
HORIZON-BRIDGING-2027-04-11
Call
HORIZON-BRIDGING-2027-04
Last checked
14 Nov 2026

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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.

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• 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…

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” .

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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.…

Who can apply

Consortium of at least 3 independent legal entities from 3 different EU Member States or associated countries, at least one in a Member State (Horizon Europe standard rule).

Applicant categories are a starting point. The official call decides eligibility.

Timing

Single-stage call. Next deadline 2027-02-16. The portal states the exact cut-off time (EU calls usually close at 17:00 Brussels time).

How to apply

  1. Read the full topic on the Funding & Tenders Portal: expected outcome, scope, type of action and the topic conditions, including any country restrictions.
  2. Register each participating organisation in the Funding & Tenders Portal to get a PIC.
  3. Consortium of at least 3 independent legal entities from 3 different EU Member States or associated countries (Horizon Europe standard rule; Türkiye is associated). Confirm in the topic conditions.
  4. Prepare Part A (administrative forms and budget, completed in the portal) and Part B (the technical description on the official template for this type of action).
  5. Submit in the portal before the cut-off time on the deadline day. Late submissions are not accepted.

From the call text

Who can apply
Not stated in the call text we hold — check the official page
Company stage
Not stated in the call text we hold — check the official page
Single applicant or consortium
Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.
Where applicants must be based
Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.
Where to apply
Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.

Read the EU application guide

Where these facts come from

FactValueHow we knowTaken from the source
Deadline16 February 2027
“Single-stage call. Next deadline 2027-02-16. The portal states the exact cut-off time (EU calls usually close at 17:00 Brussels time).”
official data field15 Nov 2026
Amount per applicantUnknown — not stated in the source we holdunknown—
Total budget€10 millionofficial data field15 Nov 2026
Funding rate100% of eligible costsprogramme standard rule15 Nov 2026
Who can applyConsortium of at least 3 independent legal entities from 3 different EU Member States or associated countries, at least one in a Member State (Horizon Europe standard rule).programme standard rule15 Nov 2026
Where to applyRead the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.read from the official text15 Nov 2026

Official sources

Official call page

Facts on this page come from the funder’s official data, taken on 14 Nov 2026. The funder's own documents, including later amendments, always take precedence.

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