Carnegie Climate Governance Initiative

Solar Radiation Modification

Solar Radiation Modification (SRM), also known as Solar Radiation Management, Radiation Modification Measures or Solar Geoengineering, would aim to address a symptom of climate change by reflecting more sunlight back into space, or by allowing more infrared radiation from Earth to escape, in order to reduce the Earth’s temperature. It includes numerous proposed methods which differ significantly. None are ready for deployment. Solar Radiation Modification could not be a substitute for reducing emissions, or removing atmospheric CO2.


The policy briefs are also available in:



The Need to Govern Solar Radiation Modification – Janos Pasztor
The Need to Govern Solar Radiation Modification – Janos Pasztor

Janos Pasztor discusses C2G’s work on the governance of emerging technologies that intentionally seek to change the Earth’s climate system at the Carnegie Council for Ethics in International Affairs. In this video, he focuses on Solar Radiation Modification—approaches...

People Fixing the World: Saving the World’s Ice – BBC
People Fixing the World: Saving the World’s Ice – BBC

Scientists and engineers around the world are trying to come up with ideas to cool the planet and stop the ice from melting. In this episode of People Fixing the World: Saving the world's ice, C2G's Cynthia Scharf highlights the need to govern climate-altering...


In the interest of promoting global discussion about the need for governance of Solar Radiation Modification, C2G developed a set of icons representing these approaches, available to all to use freely.

The icons are available in png and svg file formats.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. No attribution is needed, but if you do use attribution, please credit C2G.

Past Events

Altering the Climate: Youth and the Tough Decisions Ahead

In support of the UN Youth Climate Summit
22 September 2019

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