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R
research.noaa.gov
official
https://research.noaa.gov/simulated-geoengineering-evaluation-cooler-planet-b…
Lead author Antara Banerjee, a CIRES research scientist working at NOAA’s Chemical Sciences Laboratory, said that the model required enormous inputs of sulfur dioxide to counter the expected warming – as much as 50 million metric tons would need to be continuously injected into the stratosphere every year by the end of the century to obtain zero global-mean temperature change even as carbon dioxide continues to increase. “While these sulfate aerosols would largely mitigate the impacts of greenhouse gas-induced climate change, there are unintended side effects in these simulations that we need to understand,” said Banerjee. At the direction of Congress, NOAA initiated a research program in 2020 to establish the scientific foundation needed to inform decision makers who may one day evaluate climate intervention proposals. NOAA scientists and partners are investigating the climate effects of aerosols potentially added to the stratosphere and troposphere , and evaluating modeling systems that realistically assess aerosol impacts on the Earth system and on society.
O
oxfordmartin.ox.ac.uk
article
https://www.oxfordmartin.ox.ac.uk/videos/engineering-a-cooler-planet-could-we…
### "Engineering a cooler planet: Could we? Should we?" with Prof Richard Darton and Prof Steve Rayner. Mankind’s strategies of mitigation and adaptation may well turn out to be too weak and too late to avoid dangerous climate change later this century. So might we need to try a different route - geoengineering? We could for example reflect more solar radiation back into space by making more reflective clouds; or we could absorb carbon dioxide out of the atmosphere and bury it underground, to diminish the “greenhouse” effect. Would such technologies work, and would there be side effects? And who would decide whether to do this, and when, if ever, to stop. These are just some of the questions raised by the idea of engineering the climate – could we, and should we? ##### Related Programmes. info@oxfordmartin.ox.ac.uk. Tel: +44 (0)1865 287430. © 2026 Oxford Martin School, University of Oxford. ## Keep in touch.
R
reddit.com
article
https://www.reddit.com/r/IAmA/comments/vz04jq/iama_climate_scientist_who_stud…
The leading proposal is stratospheric aerosol geoengineering. It would mimic the cooling effect of volcanic eruptions. They add millions of tons
W
web.whoi.edu
research
https://web.whoi.edu/ocb-fert/wp-content/uploads/sites/100/2017/07/NAP_Reflec…
Climate Intervention: Reflecting Sunlight to Cool Earth Proposed Mechanisms for Marine Cloud Brightening, 87 Challenges in the Implementation of Marine Cloud Brightening, 90 Modeled Climate System Responses to Marine Cloud Brightening, 91 Observational Requirements for Characterizing Marine Cloud Brightening, 96 Environmental Consequences of Marine Cloud Brightening, 97 Technical Feasibility of Marine Cloud Brightening, 98 Summary and Statement of Research Needs for Marine Cloud Brightening, 101 Other Methods, 103 Space-Based Methods, 104 Surface Albedo, 104 Cirrus Cloud Modification, 105 Observational Issues for Albedo Modification, 107 Satellite Monitoring of Large Scale Direct Effects of Albedo Modification, 107 Summary and Research Needs for Albedo Modification 113 Chapter 4: Governance of Research and Other Sociopolitical Considerations 121 Governance Considerations for Albedo Modification Research, 121 Previous Discussions of Governance of Albedo Modification Research, 122 Ethical and Sociopolitical Issues, 135 Relevant U.S. Laws and International Treaties, 136 Relevant U.S. Laws, 136 Relevant International Treaties, 138 Intellectual Property and Private Sector Engagement, 139 Next Steps, 140 Chapter 5: Way Forward 143 Albedo Modification within a Portfolio Of Climate Responses, 144 Albedo Modification Presents Poorly Understood Risks, 147 The Need for More Research on Albedo Modification, 148 Governance Considerations, 153 Concluding Thoughts, 154 References 157 Appendix A: Statement of Task for the Committee 191 Appendix B: Committee Biographies 193 Appendix C: Planned Weather Modification 201 Appendix D: Volcanic Eruptions as Analogues for Albedo Modification 211 Appendix E: Discussion of Feasibility of Albedo Modification Technologies 215 Appendix F: Acronyms and Abbreviations 217 Copyright © National Academy of Sciences.
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news.climate.columbia.edu
research
https://news.climate.columbia.edu/2024/04/24/solar-geoengineering-to-cool-the…
Nevertheless, James Hansen, director of the Program on Climate Science, Awareness and Solutions at Columbia’s Climate School, who first warned Congress about climate change risks in 1988, and a group of over 60 scientists are calling for more research into solar geoengineering. Most research into solar geoengineering strategies is currently focused on stratospheric aerosol injection (SAI, also called solar radiation management or SRM) and marine cloud brightening; other strategies include cirrus cloud thinning and the use of mirrors or sunshades. According to Gernot Wagner, co-founder of Harvard’s Solar Geoengineering Research Program and currently a climate economist at Columbia, the most important and determinative modeling variables are how high up in the stratosphere and where specifically SAI is deployed. In 2011, David Keith, Harvard’s Solar Geoengineering Research Program co-founder who is now at the University of Chicago, and atmospheric scientist Ken Caldeira estimated that to reverse 10% of the warming caused by a doubling of CO2 levels compared to the pre-industrial era, several hundred thousand tons of sulfur dioxide would have to be injected annually over a decade.
Y
youtube.com
video
https://www.youtube.com/watch?v=Psz8zQpthP8
Alexis Abramson, professor and dean at the Columbia Climate School, is an engineer whose research focuses on making buildings more efficient
C
cfr.org
article
https://www.cfr.org/event/cooling-planet-through-solar-reflection
Sunlight reflection, as you may know, has long been the third rail of U.S. climate politics, but that’s starting to change as the gravity of global warming becomes increasingly obvious. Generally, all these targets and goals are based around the idea of trying to stay close or return to something at the level of what we had before we began the industrial revolution and, in particular, the huge and very beneficial explosion of economic growth after the Second World War. There was a question I think earlier on about, well, carbon dioxide has changed levels, and temperature levels have changed, you know, over the Earth’s history. And, yeah, as parting thoughts, just to thank everybody for their interest and just to, again, reiterate that, you know, addressing climate change, there is no silver bullet and it’s really something where we need to work across the board on a diverse portfolio of solutions, and ones that are, you know, customized for each particular location and state and locality.
G
geoengineering.global
article
https://geoengineering.global/
In our civilization’s effort to slow down and stop Climate Change and reverse Global Warming, geoengineering should not be considered the only solution, but rather an important part of a comprehensive, integrated, international program that mitigates the effects of Global Warming, restores our biosphere and addresses the root causes of Climate Change (i.e., the use of fossil fuels and carbon dioxide emissions, human population growth, consumptive lifestyles, unsustainable practices, degradation of natural ecosystems, etc.). An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty [Masson-Delmotte, V., P. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty [Masson-Delmotte, V., P.